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Institute of Food and A gricultural Sciences School of Forest Resources and Conservation Florida LAKEWATCH, Program in Fisheries and Aquatic Sciences in Cooperation with Florida Fish and Wildlife Conservation Commission Long-Term Fish, Plants, and Wate r Quality Monitoring Program: 2008 Data

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Acknowledgments This program is funded by Florida Fish and Wildlife Conservation Commission (FFWCC). We thank all FFWCC, Florida LAKEWATCH, Fisheries and Aquatic Sciences personnel, and citizen volunteers who assisted in the collection of data for this program. i

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Table of Contents PAGE Acknowledgments ................................................................................................................. i Table of Contents .................................................................................................................. ii Introduction ........................................................................................................................... 1 Methods Florida LAKEWATCH Fish Sampling Procedures...................................................... 2 Florida LAKEWATCH Aquatic Plant Sampling Procedures....................................... 4 Florida LAKEWATCH Water Sampling Field and Laboratory Procedures............... 5 Florida Fish and Wildlife Conservation Commission Lake and Watershed area mapping Procedures............................................................................................ 6 Deliverables Contract Deliverable 1: 2008 Electrofishing data....................................................... 7 Contract Deliverable 2: 2008 Aquatic Plant Sampling data....................................... 7 Contract Deliverable 3: 2008 Water Quality Sampling data...................................... 8 Table 1. List of Florida LAKEWATCH and FFWCC long-term fish monitoring lakes....... 9 Table 2. Latitude and Longitudes for all electrofishing sampling transects in long term monitoring project lakes sampled in 2008............................................................................. 11 Literature Cited ................................................................................................................... 14 ii

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Appendix A Electrofishing data for all lakes sampled by Florida LAKEWATCH personnel during 2008 ......................................................................................................... 16 County Lake Alachua.................................................Wauberg....................................................... 17 Highlands.............................................Josephine...................................................... 18 Highlands.............................................June.............................................................. 19 Hillsborough.........................................Wilson.......................................................... 20 Lake......................................................Grasshopper................................................. 21 Lake......................................................Sellers........................................................... 22 Lake......................................................Wildcat......................................................... 23 Leon......................................................Jackson......................................................... 24 Marion..................................................Mill Dam...................................................... 25 Marion..................................................Weir.............................................................. 26 Miami-Dade.........................................E................................................................... 27 Orange..................................................Butler............................................................ 28 Orange..................................................Conway........................................................ 29 Orange..................................................Ivanhoe......................................................... 30 Orange..................................................Johns............................................................ 31 Orange..................................................Starke........................................................... 32 Osceola.................................................Tohopekaliga East........................................ 33 Polk.......................................................Dexter........................................................... 34 Walton..................................................Juniper.......................................................... 35 Walton..................................................Spring........................................................... 36 iii

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Appendix B Long-term monitoring project plant survey results for lakes sampled during 2008 ......................................................................................................................... 37 County Lake Alachua.................................................Wauberg....................................................... 38 Bradford...............................................Sampson....................................................... 39 Highlands.............................................June.............................................................. 40 Lake......................................................Cherry.......................................................... 41 Lake......................................................Dorr.............................................................. 42 Lake......................................................Griffin.......................................................... 43 Lake......................................................Harris............................................................ 45 Lake......................................................Minneola...................................................... 46 Lake......................................................Wildcat......................................................... 47 Marion..................................................Mill Dam...................................................... 48 Marion..................................................Weir.............................................................. 49 Miami-Dade.........................................E................................................................... 50 Orange..................................................Apopka......................................................... 51 Osceola.................................................Tohopekaliga East........................................ 53 Pinellas.................................................Tarpon.......................................................... 55 Polk.......................................................Eloise............................................................ 56 Putnam..................................................Crescent........................................................ 57 Putnam..................................................George.......................................................... 59 Seminole...............................................Monroe......................................................... 61 Walton..................................................Juniper.......................................................... 62 Walton..................................................Spring........................................................... 64 iv

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Appendix C Water chemistry data for all lakes sampled in 2008 as part of the long term monitoring program ............................................................................................................ 65 County Lake Alachua.................................................Lochloosa..................................................... 66 Alachua.................................................Newnan........................................................ 67 Alachua.................................................Orange.......................................................... 68 Alachua.................................................Santa Fe........................................................ 69 Alachua.................................................Wauberg....................................................... 70 Bay.......................................................Deer Point.................................................... 71 Bradford...............................................Sampson....................................................... 72 Brevard.................................................Poinsett......................................................... 73 Collier...................................................Trafford........................................................ 74 Gadsden................................................Talquin......................................................... 75 Gulf.......................................................Dead Lakes................................................... 76 Highlands.............................................Istokpoga...................................................... 77 Highlands.............................................Josephine...................................................... 79 Highlands.............................................June.............................................................. 82 Hillsborough.........................................Wilson.......................................................... 83 Indian River..........................................Farm 13........................................................ 84 Indian River..........................................Stick Marsh.................................................. 85 Lake......................................................Cherry.......................................................... 86 Lake......................................................Dorr.............................................................. 87 Lake......................................................Grasshopper................................................. 88 Lake......................................................Griffin.......................................................... 89 Lake......................................................Harris............................................................ 92 Lake......................................................Minneola...................................................... 96 Lake......................................................Sellers........................................................... 97 Lake......................................................Wildcat......................................................... 98 Leon......................................................Jackson......................................................... 99 Marion..................................................Mill Dam...................................................... 100 Marion..................................................Weir.............................................................. 101 Miami-Dade.........................................E................................................................... 102 Orange..................................................Apopka......................................................... 103 Orange..................................................Butler............................................................ 104 Orange..................................................Conway........................................................ 105 Orange..................................................Ivanhoe......................................................... 107 Orange..................................................Johns............................................................ 110 Orange..................................................Starke........................................................... 111 v

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Osceola.................................................Alligator....................................................... 112 Osceola.................................................Kissimmee.................................................... 113 Osceola.................................................Tohopekaliga................................................ 114 Osceola.................................................Tohopekaliga East........................................ 117 Polk.......................................................Dexter........................................................... 118 Polk.......................................................Eloise............................................................ 119 Polk.......................................................Weohyakapka............................................... 120 Putnam..................................................Crescent........................................................ 121 Putnam..................................................Rodman........................................................ 124 Seminole...............................................Jesup............................................................. 133 Seminole...............................................Monroe......................................................... 135 Sumter..................................................Panasoffkee.................................................. 137 Walton..................................................Juniper.......................................................... 138 Walton..................................................Spring........................................................... 140 vi

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Appendix D Lake and watershed area maps of 32 lakes in the long-term monitoring program ............................................................................................................................... 141 County Lake Alachua.................................................Lochloosa..................................................... 142 Alachua.................................................Newnan........................................................ 143 Alachua.................................................Orange.......................................................... 144 Alachua.................................................Santa Fe........................................................ 145 Alachua.................................................Wauberg....................................................... 146 Highlands.............................................Istokpoga...................................................... 147 Highlands.............................................Josephine...................................................... 148 Highlands.............................................June.............................................................. 149 Hillsborough.........................................Wilson.......................................................... 150 Indian River..........................................Stick Marsh.................................................. 151 Lake......................................................Cherry.......................................................... 152 Lake......................................................Dorr.............................................................. 153 Lake......................................................Grasshopper................................................. 154 Lake......................................................Sellers........................................................... 155 Lake......................................................Wildcat......................................................... 156 Marion..................................................Mill Dam...................................................... 157 Marion..................................................Weir.............................................................. 158 Miami-Dade.........................................E................................................................... 159 Orange..................................................Butler............................................................ 160 Orange..................................................Conway........................................................ 161 Orange..................................................Ivanhoe......................................................... 162 Orange..................................................Johns............................................................ 163 Orange..................................................Starke........................................................... 164 Osceola.................................................Alligator....................................................... 165 Osceola.................................................Kissimmee.................................................... 166 Osceola.................................................Tohopekaliga................................................ 167 Osceola.................................................Tohopekaliga East........................................ 168 Polk.......................................................Dexter........................................................... 169 Polk.......................................................Weohyakapka............................................... 170 Sumter..................................................Panasoffkee.................................................. 171 Walton..................................................Juniper.......................................................... 172 Walton..................................................Spring........................................................... 173 Appendix E: Florida LAKEWATCH procedures for measuring aquatic vegetation Percent Area Covered and Percent Volume Infested........................................................... 174 vii

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Florida LAKEWATCH Long-term Fish Monitoring Program Introduction Florida LAKEWATCH is a volunteer citizens lake monitoring program. Citizens from throughout Florida are trained by staff from the University of Floridas Department of Fisheries and Aquatic Sciences to conduct long-term scientific lake monitoring programs. Special attention is given to the monitoring of water quality and the distribution of scientifically sound lake management information. Florida LAKEWATCH also provides citizens with educational material regarding their lakes and provides a vehicle by which concerned citizens can work with professionals in government to foster a better understanding of Florida lakes. The Florida LAKEWATCH program is extremely successful and to date, over 1000 lakes from 50 Florida Counties have been part of the LAKEWATCH program. Currently Florida LAKEWATCH is maintaining approximately 600 active lakes in the program with over 800 active citizen volunteers. One major concern of the citizens involved with LAKEWATCH is the health of the fish populations in their lakes. To help get more information on fish and long-term trends in fish populations Florida LAKEWATCH began cooperating with the Florida Fish and Wildlife Conservation Commission (FFWCC) in the collection of fish data on 32 water bodies. These lakes have all been in the Florida LAKEWATCH program for the duration of sampling, yielding good background information on water chemistry and aquatic plants in these lakes. In 2006 FFWCC and Florida LAKEWATCH expanded this cooperative sampling to cover 52 lakes statewide. The list of lakes now in the monitoring program, along with each groups responsibilities for sampling are listed in Table 1. The fish populations in 32 lakes have been sampled with electrofishing in the springs of 1999 through 2007, although some lakes were missed due to low water in the spring of 2000 and 2001. Florida LAKEWATCHs staff is currently analyzing the long-term electrofishing data to identify trends in indexes of fish communities over the last ten 1

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years. In the fall of 2007 Florida LAKEWATCH shifted community sampling from spring to fall to coincide with the FFWCC sampling schedule. This shift allowed better pooling and comparison of electrofishing data in the future. Lakes selected for the long-term fish sampling program cover most of Florida (Table 1), thereby spreading the work load to different regional personnel of both Florida LAKEWATCH and FFWCC. The lakes were also selected to cover a wide range of lake trophic states and aquatic macrophyte abundances as these are major factors impacting fish populations in lakes. The goals of this project are three fold: 1) to examine the long-term variation in fish communities from a range of lakes in relation to: water chemistry, lake trophic status, aquatic macrophyte abundances, and lake morphology, 2) educate citizens in the functioning of Florida fish populations and 3) facilitate the interaction and cooperation among Florida citizens, the Program in Fisheries and Aquatic Sciences, University of Florida/Institute of Food and Agricultural Sciences, and Florida Fish and Wildlife Conservation Commission. Methods Florida LAKEWATCH Fish Sampling Procedures: Electrofishing samples were collected in the fall (September-December) of 2008. One hundred and twenty electrofishing samples were taken on 20 of the lakes listed in Table 1. Six transects (10 minutes each) were collected at fixed stations spaced uniformly around each lake. The latitude and longitude of these transects were marked with Global Positioning System units (GPS) (Table 2) to insure constant sampling locations though time. Electrofishing was conducted with one dipper, along the shore with the pedal down constantly for 10 minutes. All fish were collected and placed in an aerated tank. At the end of each transect all fish 2

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were measured to max total length (TL) and released. Largemouth bass, black crappie, and all sunfish species were measured to the nearest mm. All other fishes were grouped by species into 2-cm size groups. For each species, the total number of fish for each size group was recorded for each individual transect. Other data collected from each transect included time of day, approximate depth and percent composition of each prominent macrophyte species along each transect (estimated visually). Only fish length was measured on all of the fish collected during this study. This was done to minimize the amount of time needed to work up fish and expedite live releases. However, to examine weights in relation to other Florida Lakes, weights were calculated using length/weight regressions from unpublished data (Bill Schaeffer, Florida Fish and Wildlife Conservation Commission). Nine fish community measures were calculated for each sampling event (Catch per unit effort for numbers and weights, percent composition of total numbers and weight, species richness, diversity (three different measures), and evenness). Species richness was measured as the number of individual species caught per lake per sampling event. Three different forms of the Simpsons Diversity Index were calculated. The Simpsons Index (D) is the probability of picking two organisms at random that are different species and is calculated as follows: 2ipD (1) where D = Simpsons index p i = Proportion of species i in the community The Simpsons Index of Diversity (1-D) is the probability of picking two organisms at random that are the same species. Simpsons index of diversity is calculated as follows: (1pi 2)1D (2) where (1-D) = Simpsons index of diversity p i = Proportion of individuals of species i in the community 3

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Lastly, the Simpsons Reciprocal Index ( D1 ) is the number of equally common species required the generate the observed heterogeneity of the sample and is calculated as follows: 2 1 1ipD (3) where D = Simpsons reciprocal index 1pi = Proportion of species i in the community ies undance of the different species making up the richess a samle and was given by: These methods give more weight to commonly sampled, and often more desired, spec(Krebs 1999). Each of these equations are widely accepted and commonly used, and were therefore all included. Species evenness is a measure of the relative ab nofp sD E/1 D/1 (4) ness = Simpsons index (equation 1) his evenness calculation gives values that range from 0 to 1 with greater evenness d on ewhere DE/1= Simpsons measure of even D s = Number of species in sample T having values closer to 1 (Krebs 1999). Florida LAKEWATCH Aquatic Plant Sampling Procedures: Aquatic macrophyte surveys were conducted on 21 of the lakes listed in Table 1 during the summer (May September) of 2008. Only partial plant sampling was completelake Monroe (Seminole County) due to high water from tropical storm Fay. The abovground standing crop of emergent, floating-leaved, and submerged vegetation was measured along uniformly placed transects (9 to 30, depending on the size of the water body) around the water body. At each transect divers cut the above-ground portions of 4

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aquatic macrophytes that were inside a 0.25m 2 plastic square randomly thrown once in each plant zone. The vegetation was placed in nylon mesh bags, spun to remove excwater, and weighed to the nearest 0.1 kg. Average standing crop (kg wet weight/m ess r ed for each water body. All plant species seen while sampling ere listed according to the frequency that they occurred in evenly spaced transects ata This method is unpublished and modified om the methodology developed by Jim Griffin of the University of South Florida ts chi 2 ) foeach vegetation zone was calculated by averaging samples from each transect. The combined width (m) of the floating-leaved and emergent zones was estimated at eachtransect and then averag w around the water body. The percent volume infested with aquatic macrophytes (PVI) and the percent area covered with aquatic macrophytes (PAC) were determined according to modified methods of Maceina and Shireman (1980). The methods were modified because of advancing technologies. PAC and PVI in deeper, open water portions of the lakes were measured using sonar bottom transect images recorded with a Lowrance LCX 28c HDsonar and GPS system. Random samples from all data points on each water body were taken and measured for lake depth and plant height, if plants were present. These dwere used in conjunction with the littoral zone measurements to acquire estimates of whole lake PAC and PVI. Appendix E shows the current Florida LAKEWATCH working method for measuring PAC and PVI. fr (personal communication, unpublished data). Florida LAKEWATCH Water Sampling Field and Laboratory Procedures: On sampling dates throughout the year, citizen volunteers, UF staff, or FFWCC staff collected surface water samples from one to six mid-water locations (depending upon water body size) on 47 lakes from Table 1 (Canfield 1991). Water samples for nutrien(total phosphorus and total nitrogen) were collected at each sampling station in 250-ml, acid-cleaned, triple-rinsed Nalgene bottles provided by the Program in Fisheries and Aquatic Sciences. Water clarity at each sampling location was measured with a Secdisc and additional surface water samples were collected at each location in 4-L, tap 5

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water rinsed, plastic jugs. To estimate the concentration of plankton algae at each sampling station, a measur ed volume of water from the 4-L jugs was collected and ltered through a Gelman Type A-E glass fiber filter. Filters were then stored over silica WCC ies and Aquatic Science's water quality boratory where the water samples and filters were analyzed for total phosphorus, total in ute for the ophyll oncentrations (g/L) were determined spectrophotometrically (Method 10200 H; APHA lorida Fish and Wildlife Conservation Commission Lake and Watershed Mapping fi gel desiccant and frozen. Water samples and the glass fiber filters were stored frozen at the homes of the citizen volunteers, at one of thirty-four collection centers located across the state, or at FFfacilities for one to four months. All frozen samples along with Secchi disc information was delivered to the Department of Fisher la nitrogen and chlorophyll concentrations. At the laboratory, total phosphorus concentrations (g/L) were determined using the procedures of Murphy and Riley (1962) with a persulfate digestion (Menzel and Corw1965). Total nitrogen concentrations (g/L) were determined by oxidizing water sampleswith persulfate and determining nitrate-nitrogen with second derivative spectroscopy (DElia et al. 1977; Simal et al. 1985; Wollin 1987). A total nitrogen equivalency study of nitrogen in surface waters demonstrated that this method is a suitable substitstandard USEPA method involving the sum of nitrate-nitrogen and Kjeldahl-nitrogen as measured with an automated analyzer (Sylvia S. Labie, Administrator Florida Department of Environmental Regulation Quality Assurance Section, 1991). Chlor c 1989) following pigment extraction with ethanol (Sartory and Grobbelaar 1984). F Procedures: Lake and watershed area maps of 32 of the lakes from Table 1 were created for future analysis of effects of watershed use on plant and fish communities. These maps were generated by Brian Beneke of the Florida Fish and Wildlife Conservation Commission (Appendix D). All of these maps were created using GIS analysis conducted in raster 6

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format using Arc Hydro Tools, version 1.1, beta 2 and the Spatial Analyst extension of the ArcMap software package (ESRI, Version 9.2, 2003). The pixel size used for the analysis was 10 x 10 m, with the extent of the analysis from Fort Walton County to South Miami-Dade (approxima tely 2/3 of the State of Florida). Source data used in the analysis f watersheds was a 10-meter resolution digital elevation model (DEM) generated by the n. hed. The r formats and used to create the dividual maps of each watershed (Brian Beneke, Florida Fish and Wildlife Conservation Commission, personal communication). rs ion of s. Species richness, diversity (three indices), and venness measures are shown for each sampling event. A CD with the raw data is o US Geological Survey. ArcHydro was used to perform Terrain Proprocessing on the DEM. This included Fill Sinks, Flow Direction, Flow Accumulation, Stream Definition, and Stream SegmentatioThe watershed tool in the Hydrology tool set was used to complete the waters32 watersheds in raster formats were converted to vecto in Deliverables Contract Deliverable 1: 2008 Electrofishing data (pages 16-36): One hundred and twenty electrofishing events were conducted on 20 of lakes in 11 counties by Florida LAKEWATCH personnel during the fall of 2008. GPS coordinates for all transects sampled are provided in Table 2. Results for each lake sampled are shown in Appendix A. Catch per unit effort (CPUE) data is provided for both numbe(number/hour) and weights (grams/hour) of fish caught as well as percent composittotal numbers and weight by specie e attached to the end of this section. Contract Deliverable 2: 2008 Aquatic Plant Sampling data (pages 37-64): 7

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Aquatic plant communities were sampled from 21 lakes in 13 counties by Florida LAKEWATCH personnel during the summer of 2008. Results for each lake sampshown in Appendix B. Percent area covered (PAC), percent vo led are lume infested (PVI), iomass (emergent, floating, and submerged plants), littoral zone width, and average nd equency of occurrence of each aquatic plant species present. pled dix C. Physical characteristics and sampling history of each lake are rovided. Long-term average and 2008 values for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L), and secchi depth for each sampling occasion are listed. b depth are presented for each lake as well as the common and scientific name a fr Contract Deliverable 3: 2008 Water Quality Sampling data (pages 65-140): Water chemistry from 47 lakes in 21 counties was sampled by volunteers, Florida LAKEWATCH, and FFWCC personnel throughout 2008. Results for each lake samare shown in Appen p 8

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Table 1. List of sampling responsibilities for Florida LAKEWATCH (LW) and Florida Fish and Wildlife Conservation Commission (FFWCC) long-term fish monitoring lakes. Water samples being taken by the local Water Management District offices (District) are noted. County Lake Fish Sampler Water Sampler Plant Sampler Alachua Lochloosa FFWCC LW LW Alachua Newnan FFWCC LW LW Alachua Orange FFWCC LW LW Alachua Santa Fe FFWCC LW LW Alachua Wauberg LW LW LW Bay Deerpoint FFWCC LW LW Bradford Sampson FFWCC LW LW Brevard Poinsett FFWCC LW LW Broward Cons. Area 3 FFWCC LW LW Collier Trafford FFWCC LW LW Gadsden Talquin FFWCC LW LW Gulf Dead Lakes FFWCC LW LW Highlands Istokpoga FFWCC LW LW Highlands Josephine FFWCC LW LW Highlands June LW LW LW Hillsborough Wilson LW LW LW Indian River Stick Marsh FFWCC LW LW Lake Apopka FFWCC District LW Lake Cherry FFWCC LW LW Lake Dorr FFWCC LW LW Lake Grasshopper LW LW LW Lake Griffin FFWCC LW LW Lake Harris FFWCC LW LW Lake Minneola FFWCC LW LW Lake Sellers LW LW LW Lake Wildcat LW LW LW Leon Jackson FFWCC LW LW Marion Mill Dam FFWCC LW LW Marion Weir LW LW LW Miami-Dade E LW LW LW Orange Butler LW LW LW Orange Conway LW LW LW Orange Ivanhoe LW LW LW Orange Johns FFWCC LW LW Orange Starke LW LW LW Osceola Alligator FFWCC LW LW Osceola Kissimmee FFWCC LW LW Osceola Tohopekaliga FFWCC LW LW Osceola Toho East LW LW LW 9

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Table 1: Continued. Palm Beach Okeechobee FFWCC District LW Pinellas Tarpon FFWCC LW LW Polk Dexter LW LW LW Polk Eloise FFWCC LW LW Polk Weohyakapka FFWCC LW LW Putnam Crescent FFWCC LW LW Putnam George FFWCC LW LW Putnam Rodman FFWCC LW LW Seminole Jesup FFWCC LW LW Seminole Monroe FFWCC LW LW Sumter Panasoffkee FFWCC LW LW Walton Juniper LW LW LW Walton Spring LW LW LW 10

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Table 2: Latitude and Longitudes for all transects sampled in long term monitoring project lakes during 2008. Sections with a (.) are locations were coordinates were not taken. Start Stop County Lake Tran Latitude Longitude Latitude Longitude Alachua Wauberg 1 29 31.760 82 17.923 29 31.584 82 17.879 2 29 31.438 82 17.971 29 31.439 82 18.166 3 29 31.491 82 18.301 29 31.624 82 18.374 4 29 31.804 82 18.423 29 31.994 82 18.331 5 29 32.120 82 18.204 29 32.191 82 18.082 6 29 32.035 82 17.965 29 31.852 82 17.892 Highlands Josephine 1 27 24.172 81 26.841 27 23.995 81 26.81 2 27 24.141 81 27.502 27 24.325 81 27.605 3 27 23.874 81 26.556 27 23.710 81 26.399 4 27 23.636 81 26.715 27 23.481 81 26.633 5 27 24.014 81 26.008 . . 6 27 23.909 81 25.138 27 23.687 81 25.083 Highlands June 1 27 18.834 81 22.381 27 18.840 81 22.237 2 27 18.756 81 22.848 27 18.708 81 23.056 3 27 18.150 81 23.451 27 17.912 81 23.399 4 27 17.550 81 24.863 27 17.711 81 24.970 5 27 18.535 81 25.039 27 18.742 81 24.995 6 27 19.246 81 24.526 27 19.327 81 24.277 Hillsborough Wilson 1 28 8.655 82 29.091 28 8.699 82 29.290 2 28 8.699 82 29.290 28 8.825 82 29.335 3 28 8.853 82 29.332 28 8.986 82 29.277 4 28 8.983 82 29.275 28 9.034 82 29.174 5 28 8.988 82 29.133 28 8.826 82 29.135 6 28 8.797 82 29.122 28 8.674 82 29.069 Lake Grasshopper 1 29 8.086 81 37.184 29 7.956 81 37.007 2 29 7.970 81 36.955 29 8.084 81 36.889 3 29 8.152 81 36.812 29 8.301 81 36.725 4 29 8.464 81 36.600 29 8.594 81 36.684 5 29 8.601 81 36.810 29 8.404 81 36.739 6 29 8.378 81 36.806 29 8.198 81 36.904 Lake Sellers 1 29 6.620 81 37.894 29 6.546 81 38.072 2 29 6.562 81 38.275 29 6.494 81 38.502 3 29 6.503 81 38.858 29 6.664 81 38.774 4 29 6.880 81 38.572 29 6.976 81 38.477 5 29 7.115 81 38.480 29 6.997 81 38.262 6 29 7.025 81 37.770 29 6.831 81 37.797 Lake Wildcat 1 29 10.218 81 37.589 29 10.134 81 37.848 2 29 10.034 81 38.093 29 9.906 81 38.059 3 29 9.285 81 37.615 29 9.220 81 37.437 4 29 9.461 81 37.491 29 9.604 81 37.656 5 29 9.918 81 37.523 29 9.930 81 37.506 6 29 10.014 81 37.561 29 10.019 81 37.717 11

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Table 2: Continued. Start Stop County Lake Trans Latitude Longitude Latitude Longitude Leon Jackson 1 30 31.469 84 21.148 30 31.645 84 21.219 2 30 31.799 84 20.461 30 31.642 84 20.307 3 30 32.445 84 19.773 30 32.600 84 19.886 4 30 31.454 84 19.303 30 31.317 84 19.212 5 30 30.447 84 18.749 30 30.357 84 18.746 6 30 30.863 84 17.991 30 30.799 84 17.839 Marion Mill Dam 1 29 10.736 81 50.036 29 10.922 81 49.987 2 29 10.922 81 49.988 29 11.088 81 50.086 3 29 11.085 81 50.085 29 11.141 81 50.205 4 29 11.159 81 50.310 29 11.060 81 50.476 5 29 10.996 81 50.553 29 10.780 81 50.549 6 29 10.724 81 50.465 29 10.635 81 50.327 Marion Weir 1 29 1.669 81 54.838 29 1.475 81 54.751 2 29 0.664 81 55.039 29 0.442 81 55.164 3 28 59.595 81 55.952 28 59.574 81 56.223 4 29 0.041 81 57.032 29 0.242 81 57.081 5 29 1.276 81 57.580 29 1.477 81 57.509 6 29 2.272 81 56.722 29 2.306 81 56.476 Miami-Dade E 1 25 38.323 80 20.813 25 38.241 80 20.632 2 25 38.214 80 20.849 25 38.362 80 20.942 3 25 38.517 80 20.937 25 38.573 80 20.771 4 25 38.566 80 20.684 25 38.465 80 20.576 5 25 38.439 80 20.573 25 38.408 80 20.799 6 25 38.345 80 20.781 25 38.321 80 20.584 Orange Butler 1 28 29.958 81 33.018 28 29.939 81 33.286 2 28 29.643 81 33.928 28 29.536 81 33.768 3 28 28.894 81 33.640 28 28.712 81 33.639 4 28 28.689 81 32.726 28 28.781 81 32.561 5 28 29.145 81 32.140 28 29.140 81 32.070 6 28 29.735 81 32.604 28 29.795 81 32.758 Orange Conway 1 28 27.836 81 21.429 28 27.770 81 21.203 2 28 27.776 81 20.684 28 27.653 81 20.476 3 28 27.298 81 21.038 28 27.452 81 21.192 4 28 27.854 81 21.473 28 27.943 81 21.638 5 28 28.856 81 20.939 28 28.754 81 20.680 6 28 28.243 81 20.401 28 28.111 81 20.600 Orange Ivanhoe 1 28 33.891 81 22.417 28 33.652 81 22.510 2 28 33.619 81 22.606 28 33.818 81 22.620 3 28 33.815 81 22.728 28 33.673 81 22.785 4 28 33.627 81 22.915 28 33.768 81 22.876 5 28 33.825 81 22.839 28 33.824 81 23.025 6 28 33.972 81 23.038 28 33.980 81 22.840 12

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Table 2: Continued. Start Stop County Lake Trans Latitude Longitude Latitude Longitude Orange Johns 1 28 32.200 81 39.725 28 32.136 81 39.652 2 28 31.631 81 40.029 28 31.619 81 39.828 3 28 31.620 81 39.827 28 31.733 81 39.682 4 28 32.023 81 38.986 28 31.980 81 38.828 5 28 31.688 81 38.373 28 31.661 81 38.555 6 28 32.425 81 38.653 28 32.571 81 38.606 Orange Starke 1 28 34.321 81 32.520 28 34.436 81 32.433 2 28 34.562 81 32.336 28 34.552 81 32.105 3 28 34.220 81 31.899 28 34.151 81 31.880 4 28 34.074 81 32.341 28 34.227 81 32.464 5 28 33.899 81 32.330 28 33.823 81 32.233 6 28 34.046 81 32.090 28 33.972 81 32.256 Osceola Toho East 1 28 15.679 81 17.151 28 15.703 81 17.364 2 28 16.213 81 18.306 28 16.387 81 18.476 3 28 17.737 81 19.013 28 17.938 81 18.980 4 28 19.301 81 17.550 28 19.404 81 17.315 5 28 18.608 81 15.050 28 18.484 81 14.919 6 28 17.152 81 15.188 28 16.965 81 15.235 Polk Dexter 1 27 59.582 81 40.600 27 59.412 81 40.696 2 27 59.365 81 40.747 27 59.250 81 40.791 3 27 59.160 81 40.887 27 59.178 81 41.097 4 27 59.256 81 40.968 27 59.435 81 41.048 5 27 59.600 81 41.011 27 59.702 81 40.866 6 27 59.716 81 40.781 27 59.659 81 40.619 Walton Juniper 1 30 46.425 86 7.991 30 46.442 86 7.774 2 30 46.456 86 7.761 30 46.515 86 7.576 3 30 46.412 86 7.351 30 46.237 86 7.256 4 30 46.123 86 7.385 30 46.109 86 7.605 5 30 46.044 86 7.754 30 45.926 86 7.952 6 30 46.214 86 8.061 30 46.197 86 8.348 Walton Spring 1 30 44.911 86 3.674 30 45.008 86 3.822 2 30 45.104 86 3.776 30 45.213 86 3.926 3 30 45.383 86 3.630 30 45.340 86 3.462 4 30 45.244 86 3.355 30 45.044 86 3.482 5 30 45.033 86 3.497 30 44.834 86 3.609 6 30 44.821 86 3.618 30 44.876 86 3.681 13

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Literature Cited APHA. 1989. Standard Methods for the Examination of Water and Wastewater. 17th Edition. American Public Health Association. Washington, D.C. Brooks, H. K. 1981. Guide to the physiographic divisions of Florida. Florida Coop. Extension Service., Institute Food Agriculture Sciences. University of Florida. Canfield, D.E. Jr., 1991. Assessment of water quality in the lakes of north and central Florida: The use of volunteer citizen monitors. Final Report (DER ContractWM344). Florida Department of Environmental Regulation. Tallahassee, Florida DElia, C. F., P. A. Steudler, and N. Corwin. 1977. Determination of total nitrogen in aqueous samples using persulfate digestion. Limnology and Oceanography 22:760-764. Griffith, G. E., D. E. Canfield, Jr., C. A. Horsburgh, J. M. Omernik, and S. H. Azevedo. 1997. Lake regions of Florida. Report to the Florida Department of Environmental Protection. U.S. Environmental Protection Agency, Corvallis, OR. Krebs, C.J. 1999. Ecological Methodology. Second Edition. Addison-Wesley Educational Publishers, Inc. Maceina, M. J., and J. V. Shireman. 1980. The use of a recording fathometer for the determination of distribution and biomass of hydrilla. Journal of Aquatic Plant Management. 18: 34-49. Menzel, D. W. and N. Corwin. 1965. The measurement of total phosphorus in seawater based on the liberation of organically bound fractions by persulfate oxidation. Limnology and Oceanography 10: 280-282. Murphy, J. and J. P. Riley. 1962. A modified single solution method for the determination of phosphate in natural waters. Analytica Chimica Acta 27:31-36. 14

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Sartory, D. P., and J. U. Grobbelaar. 1984. Extraction of chlorophyll a from freshwater phytoplankton for spectrophotometric analysis. Hydrobiologia 114: 177-187. Shafer, M.D., R.E. Dickinson, J.P. Heaney and W.C. Huber. 1986. Gazetteer of Florida Lakes. Florida Water Resources Research Center, Publication 96. Gainesville, Florida. Simal, J., M. A. Lage, and I. Iglesias. 1985. Second derivative ultraviolet spectroscopy and sulfamic acid method for determination of nitrates in water. Journal of Analytical Chemistry 68:962-964. Wollin, K. M. 1987. Nitrate determination in surface waters as an example of the application of UV derivative spectrometry to environmental analysis. Acta Hydrochemica Hydrobiologia 15:459-469 (Ger.) 15

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Appendix A: Electrofishing data for all lakes sampled by Florida LAKEWATCH personnel during 2008. 16

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Electrofishing Data (Average of Six 10 Minute Transects) Alachua County/Wauberg 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Black crappie 4 1.6 529 1.0 Bluegill 110 43.1 10330 20.3 Bowfin 9 3.5 22327 43.8 Brook silverside 13 5.1 39 0.1 Brown bullhead 1 0.4 742 1.5 Eastern mosquitofish 6 2.4 4 0.0 Florida gar 11 4.3 6459 12.7 Gizzard shad 26 10.2 1827 3.6 Golden shiner 63 24.7 1809 3.6 Largemouth bass 6 2.4 5924 11.6 Redear sunfish 5 2.0 925 1.8 Seminole killifish 1 0.4 13 0.0 Total 255 50927 Simpson's D 0.26 Simpson's 1/D 3.77 Simpson's 1-D 0.74 Simpson's evenness 0.31 Species Richness 12 17

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Electrofishing Data (Average of Six 10 Minute Transects) Highlands County/Josephine 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 22 17.3 1562 6.6 Brook silverside 5 3.9 11 0.0 Florida gar 3 2.4 1806 7.6 Gizzard shad 19 15.0 767 3.2 Golden shiner 1 0.8 16 0.1 Largemouth bass 19 15.0 15853 66.9 Redear sunfish 23 18.1 3313 14.0 Seminole killifish 8 6.3 99 0.4 Taillight shiner 1 0.8 1 0.0 Threadfin shad 24 18.9 161 0.7 Warmouth 2 1.6 110 0.5 Total 127 23701 Simpson's D 0.15 Simpson's 1/D 6.68 Simpson's 1-D 0.85 Simpson's evenness 0.61 Species Richness 11 18

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Electrofishing Data (Average of Six 10 Minute Transects) Highlands County/June 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 20 7.2 2265 5.7 Bowfin 1 0.4 1847 4.7 Brook silverside 100 36.2 175 0.4 Chain pickerel 8 2.9 4985 12.6 Lake chubsucker 1 0.4 821 2.1 Largemouth bass 77 27.9 18398 46.5 Redear sunfish 62 22.5 10987 27.8 Seminole killifish 4 1.4 49 0.1 Threadfin shad 3 1.1 13 0.0 Total 276 39540 Simpson's D 0.27 Simpson's 1/D 3.76 Simpson's 1-D 0.73 Simpson's evenness 0.42 Species Richness 9 19

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Electrofishing Data (Average of Six 10 Minute Transects) Hillsborough County/Wilson 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 48 57.8 1372 6.7 Bowfin 4 4.8 6104 29.8 Florida gar 7 8.4 4648 22.7 Lake chubsucker 1 1.2 37 0.2 Largemouth bass 11 13.3 7246 35.4 Redear sunfish 10 12.0 1027 5.0 Threadfin shad 2 2.4 28 0.1 Total 83 20462 Simpson's D 0.38 Simpson's 1/D 2.65 Simpson's 1-D 0.62 Simpson's evenness 0.38 Species Richness 7 20

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Electrofishing Data (Average of Six 10 Minute Transects) Lake County/Grasshopper 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 9 27.3 122 1.5 Chain pickerel 4 12.1 62 0.8 Eastern mosquitofish 1 3.0 1 0.0 Florida gar 3 9.1 1548 19.3 Lake chubsucker 10 30.3 2546 31.7 Largemouth bass 5 15.2 3626 45.1 Warmouth 1 3.0 127 1.6 Total 33 8033 Simpson's D 0.21 Simpson's 1/D 4.67 Simpson's 1-D 0.79 Simpson's evenness 0.67 Species Richness 7 21

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Electrofishing Data (Average of Six 10 Minute Transects) Lake County/Sellers 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 18 24.7 619 2.9 Bowfin 2 2.7 4662 21.8 Brook silverside 17 23.3 28 0.1 Florida gar 4 5.5 3143 14.7 Golden shiner 1 1.4 78 0.4 Lake chubsucker 8 11.0 2671 12.5 Largemouth bass 23 31.5 10213 47.7 Total 73 21414 Simpson's D 0.23 Simpson's 1/D 4.34 Simpson's 1-D 0.77 Simpson's evenness 0.62 Species Richness 7 22

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Electrofishing Data (Average of Six 10 Minute Transects) Lake County/Wildcat 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 59 54.6 411 3.7 Eastern mosquitofish 30 27.8 7 0.1 Florida gar 1 0.9 345 3.1 Lake chubsucker 3 2.8 1932 17.6 Largemouth bass 15 13.9 8279 75.4 Total 108 10976 Simpson's D 0.40 Simpson's 1/D 2.53 Simpson's 1-D 0.60 Simpson's evenness 0.51 Species Richness 5 23

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Electrofishing Data (Average of Six 10 Minute Transects) Leon County/Jackson 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 11 1.3 677 3.2 Bowfin 5 0.6 10275 48.1 Brook silverside 803 92.3 1086 5.1 Chain pickerel 6 0.7 822 3.8 Florida gar 1 0.1 931 4.4 Golden shiner 3 0.3 84 0.4 Golden topminnow 2 0.2 8 0.0 Lake chubsucker 8 0.9 1210 5.7 Largemouth bass 24 2.8 5876 27.5 Redear sunfish 5 0.6 222 1.0 Warmouth 2 0.2 177 0.8 Total 870 21368 Simpson's D 0.85 Simpson's 1/D 1.17 Simpson's 1-D 0.15 Simpson's evenness 0.11 Species Richness 11 24

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Electrofishing Data (Average of Six 10 Minute Transects) Marion County/Mill Dam 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Black crappie 1 1.3 305 1.4 Bluegill 43 57.3 3247 14.4 Bowfin 5 6.7 11375 50.5 Chain pickerel 2 2.7 562 2.5 Florida gar 4 5.3 1686 7.5 Lake chubsucker 6 8.0 2646 11.7 Largemouth bass 14 18.7 2722 12.1 Total 75 22542 Simpson's D 0.38 Simpson's 1/D 2.64 Simpson's 1-D 0.62 Simpson's evenness 0.38 Species Richness 7 25

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Electrofishing Data (Average of Six 10 Minute Transects) Marion County/Weir 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 74 29.6 5555 12.2 Brook silverside 18 7.2 30 0.1 Chain pickerel 11 4.4 10497 23.1 Golden shiner 4 1.6 192 0.4 Lake chubsucker 2 0.8 1221 2.7 Largemouth bass 107 42.8 22449 49.3 Redear sunfish 34 13.6 5560 12.2 Total 250 45503 Simpson's D 0.30 Simpson's 1/D 3.37 Simpson's 1-D 0.70 Simpson's evenness 0.48 Species Richness 7 26

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Electrofishing Data (Average of Six 10 Minute Transects) Miami-Dade County/E 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 53 67.1 1040 6.8 Butterfly Peacock 5 6.3 3785 24.8 Largemouth bass 16 20.3 9529 62.3 Mayan cichlid 1 1.3 696 4.5 Redear sunfish 3 3.8 237 1.6 Warmouth 1 1.3 5 0.0 Total 79 15290 Simpson's D 0.50 Simpson's 1/D 2.01 Simpson's 1-D 0.50 Simpson's evenness 0.34 Species Richness 6 27

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Electrofishing Data (Average of Six 10 Minute Transects) Orange County/Butler 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 13 8.4 679 1.7 Bowfin 5 3.2 8910 21.9 Brook silverside 36 23.2 65 0.2 Chain pickerel 6 3.9 5956 14.6 Dollar sunfish 1 0.6 6 0.0 Florida gar 6 3.9 3413 8.4 Golden shiner 4 2.6 177 0.4 Lake chubsucker 5 3.2 3310 8.1 Largemouth bass 53 34.2 16080 39.5 Redear sunfish 18 11.6 2032 5.0 Seminole killifish 8 5.2 89 0.2 Total 155 40719 Simpson's D 0.20 Simpson's 1/D 5.00 Simpson's 1-D 0.80 Simpson's evenness 0.45 Species Richness 11 28

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Electrofishing Data (Average of Six 10 Minute Transects) Orange County/Conway 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 41 6.7 2106 5.4 Bowfin 1 0.2 2521 6.5 Brook silverside 431 70.5 646 1.7 Chain pickerel 6 1.0 2469 6.3 Florida gar 3 0.5 1438 3.7 Golden shiner 3 0.5 105 0.3 Grass carp 1 0.2 9142 23.5 Lake chubsucker 1 0.2 399 1.0 Largemouth bass 49 8.0 17917 46.0 Redear sunfish 15 2.5 2107 5.4 Seminole killifish 1 0.2 10 0.0 Swamp darter 1 0.2 1 0.0 Taillight shiner 58 9.5 67 0.2 Total 611 38928 Simpson's D 0.52 Simpson's 1/D 1.93 Simpson's 1-D 0.48 Simpson's evenness 0.15 Species Richness 13 29

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Electrofishing Data (Average of Six 10 Minute Transects) Orange County/Ivanhoe 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Black crappie 1 0.2 243 0.3 Bluegill 280 63.1 31367 40.0 Brook silverside 19 4.3 44 0.1 Brown bullhead 1 0.2 173 0.2 Florida gar 4 0.9 4163 5.3 Golden shiner 1 0.2 26 0.0 Largemouth bass 104 23.4 40824 52.1 Redbreast sunfish 3 0.7 260 0.3 Redear sunfish 7 1.6 658 0.8 Seminole killifish 20 4.5 322 0.4 Warmouth 4 0.9 292 0.4 Total 444 78372 Simpson's D 0.46 Simpson's 1/D 2.19 Simpson's 1-D 0.54 Simpson's evenness 0.20 Species Richness 11 30

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Electrofishing Data (Average of Six 10 Minute Transects) Orange County/Johns 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Blue tilapia 1 1.2 1941 5.0 Bluegill 26 31.7 1138 2.9 Brook silverside 4 4.9 8 0.0 Eastern mosquitofish 1 1.2 1 0.0 Florida gar 4 4.9 2628 6.7 Gizzard shad 14 17.1 3539 9.0 Golden shiner 4 4.9 320 0.8 Grass carp 1 1.2 19640 50.1 Lake chubsucker 5 6.1 3039 7.8 Largemouth bass 8 9.8 5556 14.2 Redear sunfish 5 6.1 1299 3.3 Suckermouth Catfish 1 1.2 12 0.0 Threadfin shad 8 9.8 47 0.1 Total 82 39167 Simpson's D 0.16 Simpson's 1/D 6.10 Simpson's 1-D 0.84 Simpson's evenness 0.47 Species Richness 13 31

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Electrofishing Data (Average of Six 10 Minute Transects) Orange County/Starke 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Blue tilapia 2 0.5 1090 3.4 Bluegill 39 10.4 1995 6.1 Brook silverside 77 20.5 148 0.5 Golden shiner 52 13.8 808 2.5 Lake chubsucker 4 1.1 2226 6.8 Largemouth bass 65 17.3 22859 70.3 Redbreast sunfish 5 1.3 259 0.8 Redear sunfish 34 9.0 2074 6.4 Seminole killifish 67 17.8 872 2.7 Threadfin shad 30 8.0 161 0.5 Warmouth 1 0.3 37 0.1 Total 376 32529 Simpson's D 0.15 Simpson's 1/D 6.74 Simpson's 1-D 0.85 Simpson's evenness 0.61 Species Richness 11 32

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Electrofishing Data (Average of Six 10 Minute Transects) Osceola County/Tohopekaliga East 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Atlantic needlefish 1 0.1 4 0.0 Bluegill 9 1.3 1572 8.3 Brook silverside 590 82.2 759 4.0 Chain pickerel 1 0.1 333 1.7 Florida gar 1 0.1 398 2.1 Gizzard shad 1 0.1 321 1.7 Largemouth bass 49 6.8 12236 64.2 Redear sunfish 8 1.1 3127 16.4 Threadfin shad 58 8.1 300 1.6 Total 718 19051 Simpson's D 0.69 Simpson's 1/D 1.46 Simpson's 1-D 0.31 Simpson's evenness 0.16 Species Richness 9 33

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Electrofishing Data (Average of Six 10 Minute Transects) Polk County/Dexter 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Black crappie 1 0.6 243 1.3 Bluegill 16 9.5 847 4.6 Brook silverside 87 51.8 159 0.9 Florida gar 3 1.8 1215 6.6 Golden shiner 3 1.8 35 0.2 Lake chubsucker 3 1.8 1144 6.2 Largemouth bass 49 29.2 13998 75.5 Redear sunfish 6 3.6 888 4.8 Total 168 18529 Simpson's D 0.36 Simpson's 1/D 2.74 Simpson's 1-D 0.64 Simpson's evenness 0.34 Species Richness 8 34

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Electrofishing Data (Average of Six 10 Minute Transects) Walton County/Juniper 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 170 65.4 2439 11.4 Bowfin 3 1.2 4428 20.8 Brook silverside 40 15.4 97 0.5 Chain pickerel 2 0.8 132 0.6 Florida gar 1 0.4 254 1.2 Grass carp 1 0.4 9142 42.9 Largemouth bass 36 13.8 4477 21.0 Redear sunfish 7 2.7 355 1.7 Total 260 21324 Simpson's D 0.47 Simpson's 1/D 2.12 Simpson's 1-D 0.53 Simpson's evenness 0.27 Species Richness 8 35

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Electrofishing Data (Average of Six 10 Minute Transects) Walton County/Spring 2008 Common Name Number/hour Percent of Total Grams/hour Percent of Total Bluegill 47 25.3 4753 7.5 Channel catfish 5 2.7 13192 20.9 Golden topminnow 1 0.5 4 0.0 Lake chubsucker 69 37.1 37272 59.2 Largemouth bass 28 15.1 6325 10.0 Redear sunfish 33 17.7 1331 2.1 Warmouth 3 1.6 96 0.2 Total 186 62972 Simpson's D 0.26 Simpson's 1/D 3.90 Simpson's 1-D 0.74 Simpson's evenness 0.56 Species Richness 7 36

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Appendix B: Long-term monitoring project plant survey results for lakes sampled during 2008 37

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Alachua / Wauberg Aquatic plant data collected on June 10, 2008 Percent area covered with aquatic vegetation (PAC, %) 0.0 Percent of lake's volume filled with vegetation (PVI, %) 0.0 Average emergent plant biomass (kg wet wt/m2) 2.4 Average floating-leaved plant biomass (kg wet wt/m2) 4.0 Average submersed plant biomass (kg wet wt/m2) 0.0 Average width of emergent and floating-leaved zone (ft.) 42.4 Average lake depth (m) 2.6 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) red maple Acer rubrum 90 floating water-hyacinth Eichhornia crassipes 90 maidencane Panicum hemitomon 90 Egyptian paspalidium Paspalidium geminatum 70 buttonbush Cephalanthus occidentalis 60 water hemlock Cicuta mexicana 60 pickerelweed Pontederia cordata 60 duck-potato Sagittaria lancifolia 50 water-pennywort Hydrocotyle umbellata 40 water primrose Ludwigia octovalvis 40 wax myrtle Myrica cerifera 40 water-lettuce Pistia stratiotes 40 willow Salix spp. 30 inundated beak-rush Rhynchospora inundata 20 common arrowhead Sagittaria latifolia 20 cat-tail Typha spp. 20 alligator-weed Alternanthera philoxeroides 10 coontail Ceratophyllum demersum 10 elephant-ear Colocasia esculenta 10 swamp titi Cyrilla racemiflora 10 soft rush Juncus effusus 10 joint-tail grass Manisuris spp. 10 southern naiad Najas guadalupensis 10 spatterdock Nuphar luteum 10 torpedograss Panicum repens 10 vasey grass Paspalum urvillei 10 red bay Persea borbonia 10 smartweed Polygonum hydropiperoides 10 American cupscale Sacciolepis striata 10 38

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Bradford / Sampson Aquatic plant data collected on June 4, 2008 Percent area covered with aquatic vegetation (PAC, %) 57.0 Percent of lake's volume filled with vegetation (PVI, %) 14.2 Average emergent plant biomass (kg wet wt/m2) 2.0 Average floating-leaved plant biomass (kg wet wt/m2) 1.1 Average submersed plant biomass (kg wet wt/m2) 3.6 Average width of emergent and floating-leaved zone (ft.) 345.0 Average lake depth (m) 1.6 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) pickerelweed Pontederia cordata 100 tapegrass Vallisneria americana 100 Illinois pondweed Potamogeton illinoensis 90 hydrilla Hydrilla verticillata 80 fragrant water-lily Nymphaea odorata 70 maidencane Panicum hemitomon 70 sesbans Sesbania spp. 70 bald cypress Taxodium distichum 70 red ludwigia Ludwigia repens 60 water primrose Ludwigia octovalvis 60 American lotus Nelumbo lutea 60 torpedograss Panicum repens 60 cat-tail Typha spp. 60 alligator-weed Alternanthera philoxeroides 40 Egyptian paspalidium Paspalidium geminatum 40 willow Salix spp. 40 buttonbush Cephalanthus occidentalis 30 wax myrtle Myrica cerifera 30 lemon bacopa Bacopa caroliniana 20 slender spikerush Eleocharis baldwinii 20 rush fuirena Fuirena scirpoidea 20 southern naiad Najas guadalupensis 20 spatterdock Nuphar luteum 20 club-rush Eleocharis cellulosa 10 water-pennywort Hydrocotyle umbellata 10 baby-tears Micranthemum umbrosum 10 stonewort Nitella spp. 10 purple bladderwort Utricularia purpurea 10 39

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Highlands / June Aquatic plant data collected on August 7, 2008 Percent area covered with aquatic vegetation (PAC, %) 36.0 Percent of lake's volume filled with vegetation (PVI, %) 1.9 Average emergent plant biomass (kg wet wt/m2) 5.0 Average floating-leaved plant biomass (kg wet wt/m2) 1.3 Average submersed plant biomass (kg wet wt/m2) 0.5 Average width of emergent and floating-leaved zone (ft.) 148.1 Average lake depth (m) 4.7 Frequency that plant species occur in 15 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) torpedograss Panicum repens 93 maidencane Panicum hemitomon 87 slender spikerush Eleocharis baldwinii 60 common salvinia Salvinia rotundifolia 60 elephant-ear Colocasia esculenta 53 water primrose Ludwigia octovalvis 53 stonewort Nitella spp. 53 pickerelweed Pontederia cordata 53 spatterdock Nuphar luteum 47 rush fuirena Fuirena scirpoidea 40 flat-sedge Cyperus odoratus 33 duck-potato Sagittaria lancifolia 33 buttonbush Cephalanthus occidentalis 27 red root Lachnanthes caroliniana 27 wax myrtle Myrica cerifera 27 American cupscale Sacciolepis striata 27 cat-tail Typha spp. 27 loblolly bay Gordonia lasianthus 20 Brazilian pepper Schinus terebinthifolius 20 lemon bacopa Bacopa caroliniana 13 smartweed Polygonum hydropiperoides 13 willow Salix spp. 13 burhead sedge Scirpus cubensis 13 alligator-weed Alternanthera philoxeroides 7 musk-grass Chara spp. 7 water hemlock Cicuta mexicana 7 leconte sedge Cyperus lecontei 7 water-pennywort Hydrocotyle umbellata 7 southern cutgrass Leersia hexandra 7 common duckweed Lemna minor 7 bog-moss Mayaca fluviatilis 7 baby-tears Micranthemum umbrosum 7 southern naiad Najas guadalupensis 7 Nitella prolonga 7 fragrant water-lily Nymphaea odorata 7 banana-lily Nymphoides aquatica 7 Rhexia mariana 7 giant bulrush Scirpus californicus 7 yellow-eyed grass Xyris spp. 7 40

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Lake / Cherry Aquatic plant data collected on September 3, 2008 Percent area covered with aquatic vegetation (PAC, %) 2.0 Percent of lake's volume filled with vegetation (PVI, %) 0.2 Average emergent plant biomass (kg wet wt/m2) 1.9 Average floating-leaved plant biomass (kg wet wt/m2) 2.2 Average submersed plant biomass (kg wet wt/m2) 0.4 Average width of emergent and floating-leaved zone (ft.) 152.1 Average lake depth (m) 2.6 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) maidencane Panicum hemitomon 100 spatterdock Nuphar luteum 90 duck-potato Sagittaria lancifolia 90 red root Lachnanthes caroliniana 70 sawgrass Cladium jamaicense 60 flat-sedge Cyperus odoratus 60 slender spikerush Eleocharis baldwinii 60 water primrose Ludwigia octovalvis 60 pickerelweed Pontederia cordata 60 Rhynchospora nitens 60 buttonbush Cephalanthus occidentalis 40 annual spikrush Eleocharis geniculata 30 southern water-grass Hydrochloa caroliniensis 30 water-pennywort Hydrocotyle umbellata 30 inundated beak-rush Rhynchospora inundata 30 cat-tail Typha spp. 30 torpedograss Panicum repens 20 burhead sedge Scirpus cubensis 20 yellow-eyed grass Xyris spp. 20 Mallows Hibiscus spp. 10 red ludwigia Ludwigia repens 10 wax myrtle Myrica cerifera 10 Egyptian paspalidium Paspalidium geminatum 10 marsh fleabane Pluchea spp. 10 American cupscale Sacciolepis striata 10 common salvinia Salvinia rotundifolia 10 41

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Lake / Dorr Aquatic plant data collected on June 18, 2008 Percent area covered with aquatic vegetation (PAC, %) 0.0 Percent of lake's volume filled with vegetation (PVI, %) 0.0 Average emergent plant biomass (kg wet wt/m2) 2.5 Average floating-leaved plant biomass (kg wet wt/m2) 0.8 Average submersed plant biomass (kg wet wt/m2) 0.2 Average width of emergent and floating-leaved zone (ft.) 89.4 Average lake depth (m) 3.9 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) buttonbush Cephalanthus occidentalis 90 wax myrtle Myrica cerifera 80 maidencane Panicum hemitomon 80 pickerelweed Pontederia cordata 80 water primrose Ludwigia octovalvis 70 spatterdock Nuphar luteum 60 water-pennywort Hydrocotyle umbellata 50 sweetgum Liquidambar styraciflua 50 swamp titi Cyrilla racemiflora 40 burhead sedge Scirpus cubensis 40 red ludwigia Ludwigia repens 30 torpedograss Panicum repens 30 elephant-ear Colocasia esculenta 20 slender spikerush Eleocharis baldwinii 20 frog's-bit Limnobium spongia 20 willow Salix spp. 20 red maple Acer rubrum 10 southern water-grass Hydrochloa caroliniensis 10 red root Lachnanthes caroliniana 10 fragrant water-lily Nymphaea odorata 10 inundated beak-rush Rhynchospora inundata 10 duck-potato Sagittaria lancifolia 10 common salvinia Salvinia rotundifolia 10 giant bulrush Scirpus californicus 10 bald cypress Taxodium distichum 10 42

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Lake / Griffin Aquatic plant data collected on July 8, 2008 Percent area covered with aquatic vegetation (PAC, %) 0.0 Percent of lake's volume filled with vegetation (PVI, %) 0.0 Average emergent plant biomass (kg wet wt/m2) 2.3 Average floating-leaved plant biomass (kg wet wt/m2) 0.7 Average submersed plant biomass (kg wet wt/m2) 0.5 Average width of emergent and floating-leaved zone (ft.) 134.1 Average lake depth (m) 2.0 Frequency that plant species occur in 20 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) duck-potato Sagittaria lancifolia 90 Egyptian paspalidium Paspalidium geminatum 85 willow Salix spp. 85 buttonbush Cephalanthus occidentalis 60 elephant-ear Colocasia esculenta 60 water primrose Ludwigia octovalvis 60 pickerelweed Pontederia cordata 60 cat-tail Typha spp. 60 water-pennywort Hydrocotyle umbellata 55 sawgrass Cladium jamaicense 50 red maple Acer rubrum 35 wax myrtle Myrica cerifera 35 maidencane Panicum hemitomon 35 giant bulrush Scirpus californicus 35 big rose mallow Hibiscus grandiflorus 30 bald cypress Taxodium distichum 30 water hemlock Cicuta mexicana 20 fragrant water-lily Nymphaea odorata 20 smartweed Polygonum hydropiperoides 20 elderberry Sambucus canadensis 20 sesbans Sesbania spp. 20 tapegrass Vallisneria americana 20 alligator-weed Alternanthera philoxeroides 15 musk-grass Chara spp. 15 spatterdock Nuphar luteum 15 yellow water-lily Nymphaea mexicana 15 arrow-arum Peltandra virginica 15 leconte sedge Cyperus lecontei 10 Illinois pondweed Potamogeton illinoensis 10 caric sedge Carex albolutescens 5 coontail Ceratophyllum demersum 5 flat-sedge Cyperus odoratus 5 buttonweed Diodia virginiana 5 club-rush Eleocharis cellulosa 5 red ludwigia Ludwigia repens 5 torpedograss Panicum repens 5 common salvinia Salvinia rotundifolia 5 sand cordgrass Spartina bakeri 5 bladderwort Utricularia foliosa 5 43

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Lake / Griffin Common Name Plant Species Frequency (%) giant cutgrass Zizaniopsis miliacea 5 44

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Lake / Harris Aquatic plant data collected on June 24, 2008 Percent area covered with aquatic vegetation (PAC, %) 0.0 Percent of lake's volume filled with vegetation (PVI, %) 0.0 Average emergent plant biomass (kg wet wt/m2) 2.2 Average floating-leaved plant biomass (kg wet wt/m2) 0.2 Average submersed plant biomass (kg wet wt/m2) 0.2 Average width of emergent and floating-leaved zone (ft.) 97.5 Average lake depth (m) 3.1 Frequency that plant species occur in 15 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) Egyptian paspalidium Paspalidium geminatum 100 maidencane Panicum hemitomon 93 bald cypress Taxodium distichum 87 duck-potato Sagittaria lancifolia 73 water primrose Ludwigia octovalvis 53 cat-tail Typha spp. 53 water hemlock Cicuta mexicana 47 pickerelweed Pontederia cordata 47 tapegrass Vallisneria americana 47 elephant-ear Colocasia esculenta 40 water-pennywort Hydrocotyle umbellata 33 smartweed Polygonum hydropiperoides 33 musk-grass Chara spp. 20 spatterdock Nuphar luteum 20 giant reed Phragmites australis 20 red maple Acer rubrum 13 buttonbush Cephalanthus occidentalis 13 sawgrass Cladium jamaicense 13 flat-sedge Cyperus odoratus 13 wax myrtle Myrica cerifera 13 fragrant water-lily Nymphaea odorata 13 willow Salix spp. 13 southern water-hemp Amaranthus australis 7 coinwort Centella asiatica 7 leconte sedge Cyperus lecontei 7 barnyard grass Echinochloa crusgalli 7 floating water-hyacinth Eichhornia crassipes 7 slender spikerush Eleocharis baldwinii 7 club-rush Eleocharis cellulosa 7 rush fuirena Fuirena scirpoidea 7 American lotus Nelumbo lutea 7 swamp tupelo Nyssa sylvatica 7 torpedograss Panicum repens 7 marsh fleabane Pluchea spp. 7 Illinois pondweed Potamogeton illinoensis 7 dwarf arrowhead Sagittaria subulata 7 common salvinia Salvinia rotundifolia 7 giant bulrush Scirpus californicus 7 45

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Lake / Minneola Aquatic plant data collected on June 26, 2008 Percent area covered with aquatic vegetation (PAC, %) 0.0 Percent of lake's volume filled with vegetation (PVI, %) 0.0 Average emergent plant biomass (kg wet wt/m2) 1.9 Average floating-leaved plant biomass (kg wet wt/m2) 0.0 Average submersed plant biomass (kg wet wt/m2) 0.0 Average width of emergent and floating-leaved zone (ft.) 46.5 Average lake depth (m) 3.0 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) water primrose Ludwigia octovalvis 90 maidencane Panicum hemitomon 90 torpedograss Panicum repens 90 leconte sedge Cyperus lecontei 60 sesbans Sesbania spp. 60 flat sedge Cyperus polystachyos 30 Fimbristylis miliacea 30 red root Lachnanthes caroliniana 30 elephant-ear Colocasia esculenta 20 jointed flat sedge Cyperus haspan 20 slender spikerush Eleocharis baldwinii 20 soft rush Juncus effusus 20 Egyptian paspalidium Paspalidium geminatum 20 willow Salix spp. 20 alligator-weed Alternanthera philoxeroides 10 coinwort Centella asiatica 10 buttonbush Cephalanthus occidentalis 10 flat-sedge Cyperus odoratus 10 sedge spp. Cyperus spp. 10 Cyperus surinamensis 10 rush fuirena Fuirena scirpoidea 10 Juncus validus 10 red ludwigia Ludwigia repens 10 swamp tupelo Nyssa sylvatica 10 red bay Persea borbonia 10 marsh fleabane Pluchea spp. 10 pickerelweed Pontederia cordata 10 duck-potato Sagittaria lancifolia 10 46

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Lake / Wildcat Aquatic plant data collected on June 17, 2008 Percent area covered with aquatic vegetation (PAC, %) 0.0 Percent of lake's volume filled with vegetation (PVI, %) 0.0 Average emergent plant biomass (kg wet wt/m2) 4.5 Average floating-leaved plant biomass (kg wet wt/m2) 1.4 Average submersed plant biomass (kg wet wt/m2) 0.2 Average width of emergent and floating-leaved zone (ft.) 71.1 Average lake depth (m) 4.1 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) maidencane Panicum hemitomon 100 buttonbush Cephalanthus occidentalis 80 sawgrass Cladium jamaicense 80 loblolly bay Gordonia lasianthus 60 dahoon holly Ilex cassine 50 red ludwigia Ludwigia repens 40 wax myrtle Myrica cerifera 40 banana-lily Nymphoides aquatica 40 pickerelweed Pontederia cordata 40 spatterdock Nuphar luteum 30 slender spikerush Eleocharis baldwinii 20 hatpin Eriocaulon decangulare 20 rush fuirena Fuirena scirpoidea 20 water-pennywort Hydrocotyle umbellata 20 red root Lachnanthes caroliniana 20 fragrant water-lily Nymphaea odorata 20 torpedograss Panicum repens 20 dwarf arrowhead Sagittaria subulata 20 purple bladderwort Utricularia purpurea 20 red maple Acer rubrum 10 Tracy's beak-rush Rhynchospora tracyi 10 Florida bladderwort Utricularia floridana 10 horned bladderwort Utricularia cornuta 10 yellow-eyed grass Xyris spp. 10 47

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Marion / Mill Dam Aquatic plant data collected on June 12, 2008 Percent area covered with aquatic vegetation (PAC, %) 12.0 Percent of lake's volume filled with vegetation (PVI, %) 1.3 Average emergent plant biomass (kg wet wt/m2) 1.8 Average floating-leaved plant biomass (kg wet wt/m2) 1.2 Average submersed plant biomass (kg wet wt/m2) 1.1 Average width of emergent and floating-leaved zone (ft.) 130.7 Average lake depth (m) 3.7 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) bog-moss Mayaca fluviatilis 100 maidencane Panicum hemitomon 100 banana-lily Nymphoides aquatica 90 lemon bacopa Bacopa caroliniana 70 buttonbush Cephalanthus occidentalis 70 sawgrass Cladium jamaicense 70 rush fuirena Fuirena scirpoidea 60 spatterdock Nuphar luteum 60 slender spikerush Eleocharis baldwinii 40 water-pennywort Hydrocotyle umbellata 40 leconte sedge Cyperus lecontei 30 torpedograss Panicum repens 30 fragrant water-lily Nymphaea odorata 20 pickerelweed Pontederia cordata 20 willow Salix spp. 20 yellow-eyed grass Xyris spp. 20 water-shield Brasenia schreberi 10 red ludwigia Ludwigia repens 10 water primrose Ludwigia octovalvis 10 wax myrtle Myrica cerifera 10 smartweed Polygonum hydropiperoides 10 inundated beak-rush Rhynchospora inundata 10 small headed beakrush Rhynchospora microcephala 10 duck-potato Sagittaria lancifolia 10 48

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Marion / Weir Aquatic plant data collected on June 11, 2008 Percent area covered with aquatic vegetation (PAC, %) 1.0 Percent of lake's volume filled with vegetation (PVI, %) 0.0 Average emergent plant biomass (kg wet wt/m2) 2.6 Average floating-leaved plant biomass (kg wet wt/m2) 0.0 Average submersed plant biomass (kg wet wt/m2) 0.0 Average width of emergent and floating-leaved zone (ft.) 120.6 Average lake depth (m) 4.8 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) water-pennywort Hydrocotyle umbellata 90 torpedograss Panicum repens 90 duck-potato Sagittaria lancifolia 80 rush fuirena Fuirena scirpoidea 70 maidencane Panicum hemitomon 70 leconte sedge Cyperus lecontei 60 slender spikerush Eleocharis baldwinii 60 rush Juncus marginatus 60 Illinois pondweed Potamogeton illinoensis 60 water primrose Ludwigia octovalvis 50 stonewort Nitella spp. 50 Egyptian paspalidium Paspalidium geminatum 50 lemon bacopa Bacopa caroliniana 40 musk-grass Chara spp. 30 flat sedge Cyperus polystachyos 30 red root Lachnanthes caroliniana 30 yellow-eyed grass Xyris spp. 30 coinwort Centella asiatica 20 sawgrass Cladium jamaicense 20 hydrilla Hydrilla verticillata 20 wax myrtle Myrica cerifera 20 sesbans Sesbania spp. 20 tapegrass Vallisneria americana 20 red maple Acer rubrum 10 carex sedge Carex spp. 10 buttonbush Cephalanthus occidentalis 10 flat-sedge Cyperus odoratus 10 southern naiad Najas guadalupensis 10 spatterdock Nuphar luteum 10 fragrant water-lily Nymphaea odorata 10 variableleaf pondweed Potamogeton diversifolius 10 bald cypress Taxodium distichum 10 cat-tail Typha spp. 10 Florida bladderwort Utricularia floridana 10 49

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Miami-Dade / E Aquatic plant data collected on August 13, 2008 Percent area covered with aquatic vegetation (PAC, %) 54.0 Percent of lake's volume filled with vegetation (PVI, %) 6.1 Average emergent plant biomass (kg wet wt/m2) 0.0 Average floating-leaved plant biomass (kg wet wt/m2) 0.0 Average submersed plant biomass (kg wet wt/m2) 2.7 Average width of emergent and floating-leaved zone (ft.) 2.4 Average lake depth (m) 6.8 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) musk-grass Chara spp. 100 Illinois pondweed Potamogeton illinoensis 90 torpedograss Panicum repens 70 southern naiad Najas guadalupensis 40 stonewort Nitella spp. 40 frog's fruit Phyla hodiflora 20 bacopa Bacopa monnieri 10 annual spikrush Eleocharis geniculata 10 water-pennywort Hydrocotyle umbellata 10 50

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Orange / Apopka Aquatic plant data collected on September 4, 2008 Percent area covered with aquatic vegetation (PAC, %) Percent of lake's volume filled with vegetation (PVI, %) Average emergent plant biomass (kg wet wt/m2) 2.2 Average floating-leaved plant biomass (kg wet wt/m2) 1.6 Average submersed plant biomass (kg wet wt/m2) 0.0 Average width of emergent and floating-leaved zone (ft.) 141.7 Average lake depth (m) Frequency that plant species occur in 20 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) cat-tail Typha spp. 95 water primrose Ludwigia octovalvis 80 elephant-ear Colocasia esculenta 75 duck-potato Sagittaria lancifolia 75 pickerelweed Pontederia cordata 70 willow Salix spp. 65 water-pennywort Hydrocotyle umbellata 55 smartweed Polygonum hydropiperoides 55 southern water-hemp Amaranthus australis 50 torpedograss Panicum repens 50 red maple Acer rubrum 45 seashore marsh-mallow Kosteletzkya virginica 45 giant bulrush Scirpus californicus 35 sawgrass Cladium jamaicense 30 Egyptian paspalidium Paspalidium geminatum 30 flat-sedge Cyperus odoratus 25 American cupscale Sacciolepis striata 25 buttonbush Cephalanthus occidentalis 20 water hemlock Cicuta mexicana 20 alligator-weed Alternanthera philoxeroides 15 salt-bush Baccharis spp. 15 wax myrtle Myrica cerifera 15 napier grass Pennisetum purpureum 15 water-lettuce Pistia stratiotes 15 leconte sedge Cyperus lecontei 10 barnyard grass Echinochloa crusgalli 10 common duckweed Lemna minor 10 swamp tupelo Nyssa sylvatica 10 maidencane Panicum hemitomon 10 arrow-arum Peltandra virginica 10 marsh fleabane Pluchea spp. 10 common arrowhead Sagittaria latifolia 10 common salvinia Salvinia rotundifolia 10 soft stem bulrush Scirpus validus 10 tapegrass Vallisneria americana 10 canna Canna spp. 5 floating water-hyacinth Eichhornia crassipes 5 giant spikerush Eleocharis interstincta 5 spatterdock Nuphar luteum 5 51

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Orange / Apopka Common Name Plant Species Frequency (%) bald cypress Taxodium distichum 5 arrow root Thalia geniculata 5 52

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Osceola / Tohopekaliga East Aquatic plant data collected on August 5, 2008 Percent area covered with aquatic vegetation (PAC, %) 5.0 Percent of lake's volume filled with vegetation (PVI, %) 0.4 Average emergent plant biomass (kg wet wt/m2) 2.0 Average floating-leaved plant biomass (kg wet wt/m2) 1.3 Average submersed plant biomass (kg wet wt/m2) 1.7 Average width of emergent and floating-leaved zone (ft.) 1320.9 Average lake depth (m) 2.6 Frequency that plant species occur in 20 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) giant bulrush Scirpus californicus 100 torpedograss Panicum repens 90 pickerelweed Pontederia cordata 90 water primrose Ludwigia octovalvis 85 duck-potato Sagittaria lancifolia 85 cat-tail Typha spp. 85 Illinois pondweed Potamogeton illinoensis 80 purple bladderwort Utricularia purpurea 75 slender spikerush Eleocharis baldwinii 70 willow Salix spp. 65 water-pennywort Hydrocotyle umbellata 55 spatterdock Nuphar luteum 55 Egyptian paspalidium Paspalidium geminatum 55 maidencane Panicum hemitomon 50 common salvinia Salvinia rotundifolia 50 bladderwort Utricularia foliosa 50 southern water-grass Hydrochloa caroliniensis 45 fragrant water-lily Nymphaea odorata 45 tapegrass Vallisneria americana 45 alligator-weed Alternanthera philoxeroides 40 lemon bacopa Bacopa caroliniana 35 elephant-ear Colocasia esculenta 35 red root Lachnanthes caroliniana 35 American lotus Nelumbo lutea 35 sesbans Sesbania spp. 35 club-rush Eleocharis cellulosa 30 flat-sedge Cyperus odoratus 25 rush fuirena Fuirena scirpoidea 25 big rose mallow Hibiscus grandiflorus 25 wax myrtle Myrica cerifera 25 stonewort Nitella spp. 25 banana-lily Nymphoides aquatica 25 smartweed Polygonum hydropiperoides 25 yellow-eyed grass Xyris spp. 25 dwarf arrowhead Sagittaria subulata 20 baby-tears Micranthemum umbrosum 15 burhead sedge Scirpus cubensis 15 red maple Acer rubrum 10 purple fanwort Cabomba pulcherrima 10 53

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Osceola / Tohopekaliga East Common Name Plant Species Frequency (%) buttonbush Cephalanthus occidentalis 10 barnyard grass Echinochloa crusgalli 10 floating water-hyacinth Eichhornia crassipes 10 coontail Ceratophyllum demersum 5 water hemlock Cicuta mexicana 5 leconte sedge Cyperus lecontei 5 jointed flat sedge Cyperus haspan 5 buttonweed Diodia virginiana 5 giant spikerush Eleocharis interstincta 5 hydrilla Hydrilla verticillata 5 frog's-bit Limnobium spongia 5 red ludwigia Ludwigia repens 5 southern naiad Najas guadalupensis 5 marsh fleabane Pluchea spp. 5 inundated beak-rush Rhynchospora inundata 5 American cupscale Sacciolepis striata 5 common arrowhead Sagittaria latifolia 5 Brazilian pepper Schinus terebinthifolius 5 three-square Scirpus americanus 5 chicken spike Sphenoclea zeylandica 5 respuinata bladderwort Utricularia resupinata 5 54

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Pinellas / Tarpon Aquatic plant data collected on August 4, 2008 Percent area covered with aquatic vegetation (PAC, %) 35.0 Percent of lake's volume filled with vegetation (PVI, %) 7.7 Average emergent plant biomass (kg wet wt/m2) 4.9 Average floating-leaved plant biomass (kg wet wt/m2) 6.5 Average submersed plant biomass (kg wet wt/m2) 5.2 Average width of emergent and floating-leaved zone (ft.) 129.6 Average lake depth (m) 2.6 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) cat-tail Typha spp. 100 coontail Ceratophyllum demersum 90 floating water-hyacinth Eichhornia crassipes 90 common salvinia Salvinia rotundifolia 80 tapegrass Vallisneria americana 80 hydrilla Hydrilla verticillata 70 alligator-weed Alternanthera philoxeroides 60 water primrose Ludwigia octovalvis 60 elephant-ear Colocasia esculenta 50 torpedograss Panicum repens 50 wax myrtle Myrica cerifera 40 Illinois pondweed Potamogeton illinoensis 40 American cupscale Sacciolepis striata 40 willow Salix spp. 40 red maple Acer rubrum 30 flat-sedge Cyperus odoratus 30 red ludwigia Ludwigia repens 30 duck-potato Sagittaria lancifolia 30 giant bulrush Scirpus californicus 30 water-pennywort Hydrocotyle umbellata 20 burhead sedge Scirpus cubensis 20 bald cypress Taxodium distichum 20 common duckweed Lemna minor 10 Ludwigia spp. 10 stonewort Nitella spp. 10 spatterdock Nuphar luteum 10 Egyptian paspalidium Paspalidium geminatum 10 frog's fruit Phyla hodiflora 10 water-lettuce Pistia stratiotes 10 smartweed Polygonum hydropiperoides 10 pickerelweed Pontederia cordata 10 red mangrove Rhizophora mangle 10 55

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Polk / Eloise Aquatic plant data collected on August 6, 2008 Percent area covered with aquatic vegetation (PAC, %) 19.0 Percent of lake's volume filled with vegetation (PVI, %) 2.5 Average emergent plant biomass (kg wet wt/m2) 2.5 Average floating-leaved plant biomass (kg wet wt/m2) 0.7 Average submersed plant biomass (kg wet wt/m2) 2.5 Average width of emergent and floating-leaved zone (ft.) 71.4 Average lake depth (m) 3.4 Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) bald cypress Taxodium distichum 100 water primrose Ludwigia octovalvis 90 smartweed Polygonum hydropiperoides 90 flat-sedge Cyperus odoratus 70 water-pennywort Hydrocotyle umbellata 70 alligator-weed Alternanthera philoxeroides 60 torpedograss Panicum repens 60 Egyptian paspalidium Paspalidium geminatum 60 duck-potato Sagittaria lancifolia 60 maidencane Panicum hemitomon 50 elephant-ear Colocasia esculenta 40 hydrilla Hydrilla verticillata 40 cat-tail Typha spp. 40 Brazilian pepper Schinus terebinthifolius 30 giant bulrush Scirpus californicus 30 tapegrass Vallisneria americana 30 floating water-hyacinth Eichhornia crassipes 20 Nitella prolonga 20 marsh fleabane Pluchea spp. 20 southern water-hemp Amaranthus australis 10 coontail Ceratophyllum demersum 10 umbrella sedge Cyperus alternifolius 10 barnyard grass Echinochloa crusgalli 10 common duckweed Lemna minor 10 arrow-arum Peltandra virginica 10 American cupscale Sacciolepis striata 10 56

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Putnam / Crescent Aquatic plant data collected on July 22, 2008 Percent area covered with aquatic vegetation (PAC, %) 0.0 Percent of lake's volume filled with vegetation (PVI, %) 0.0 Average emergent plant biomass (kg wet wt/m2) 1.7 Average floating-leaved plant biomass (kg wet wt/m2) 41.1 Average submersed plant biomass (kg wet wt/m2) 2.5 Average width of emergent and floating-leaved zone (ft.) 34.8 Average lake depth (m) 2.5 Frequency that plant species occur in 15 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) bald cypress Taxodium distichum 73 tapegrass Vallisneria americana 67 elephant-ear Colocasia esculenta 60 common salvinia Salvinia rotundifolia 60 buttonbush Cephalanthus occidentalis 53 red maple Acer rubrum 47 water-lettuce Pistia stratiotes 47 giant bulrush Scirpus californicus 47 water-pennywort Hydrocotyle umbellata 40 Egyptian paspalidium Paspalidium geminatum 40 alligator-weed Alternanthera philoxeroides 33 barnyard grass Echinochloa crusgalli 33 hydrilla Hydrilla verticillata 33 common duckweed Lemna minor 33 smartweed Polygonum hydropiperoides 33 floating water-hyacinth Eichhornia crassipes 27 water primrose Ludwigia octovalvis 27 azolla Azolla caroliniana 20 water hemlock Cicuta mexicana 20 wax myrtle Myrica cerifera 20 southern naiad Najas guadalupensis 20 swamp tupelo Nyssa sylvatica 20 giant reed Phragmites australis 20 pickerelweed Pontederia cordata 20 willow Salix spp. 20 soft stem bulrush Scirpus validus 20 sesbans Sesbania spp. 20 coontail Ceratophyllum demersum 13 spatterdock Nuphar luteum 13 arrow-arum Peltandra virginica 13 wild rice Zizania aquatica 13 salt-bush Baccharis spp. 7 flat-sedge Cyperus odoratus 7 sedge spp. Cyperus spp. 7 Cyperus surinamensis 7 southern cutgrass Leersia hexandra 7 sweetgum Liquidambar styraciflua 7 red ludwigia Ludwigia repens 7 baby-tears Micranthemum umbrosum 7 57

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Putnam / Crescent Common Name Plant Species Frequency (%) frog's fruit Phyla hodiflora 7 inundated beak-rush Rhynchospora inundata 7 swamp dock Rumex verticillatus 7 duck-potato Sagittaria lancifolia 7 dwarf arrowhead Sagittaria subulata 7 lizard's-tail Saururus cernuus 7 58

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Putnam / George Aquatic plant data collected on July 15, 2008 Percent area covered with aquatic vegetation (PAC, %) 3.0 Percent of lake's volume filled with vegetation (PVI, %) 0.3 Average emergent plant biomass (kg wet wt/m2) 1.4 Average floating-leaved plant biomass (kg wet wt/m2) 5.1 Average submersed plant biomass (kg wet wt/m2) 4.7 Average width of emergent and floating-leaved zone (ft.) 345.8 Average lake depth (m) 2.5 Frequency that plant species occur in 20 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) tapegrass Vallisneria americana 95 floating water-hyacinth Eichhornia crassipes 90 yellow water-lily Nymphaea mexicana 90 common duckweed Lemna minor 70 common salvinia Salvinia rotundifolia 60 barnyard grass Echinochloa crusgalli 55 coontail Ceratophyllum demersum 50 water-lettuce Pistia stratiotes 50 big rose mallow Hibiscus grandiflorus 45 frog's-bit Limnobium spongia 45 bald cypress Taxodium distichum 45 cat-tail Typha spp. 45 hydrilla Hydrilla verticillata 40 widgeon grass Ruppia maritima 40 water-meal Wolffia spp. 35 southern naiad Najas guadalupensis 30 water-pennywort Hydrocotyle umbellata 25 pickerelweed Pontederia cordata 25 musk-grass Chara spp. 20 elephant-ear Colocasia esculenta 20 slender spikerush Eleocharis baldwinii 20 giant reed Phragmites australis 20 red maple Acer rubrum 15 salt-bush Baccharis spp. 15 flat-sedge Cyperus odoratus 15 willow Salix spp. 15 giant bulrush Scirpus californicus 15 alligator-weed Alternanthera philoxeroides 10 bacopa Bacopa monnieri 10 buttonbush Cephalanthus occidentalis 10 water hemlock Cicuta mexicana 10 leconte sedge Cyperus lecontei 10 wax myrtle Myrica cerifera 10 Egyptian paspalidium Paspalidium geminatum 10 smartweed Polygonum hydropiperoides 10 Illinois pondweed Potamogeton illinoensis 10 American cupscale Sacciolepis striata 10 three-square Scirpus americanus 10 bladderwort Utricularia foliosa 10 59

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Putnam / George Common Name Plant Species Frequency (%) azolla Azolla caroliniana 5 stiff cornel dogwood Cornus foemina 5 loblolly bay Gordonia lasianthus 5 sweetgum Liquidambar styraciflua 5 fragrant water-lily Nymphaea odorata 5 swamp tupelo Nyssa sylvatica 5 torpedograss Panicum repens 5 marsh fleabane Pluchea spp. 5 duck-potato Sagittaria lancifolia 5 common arrowhead Sagittaria latifolia 5 sesbans Sesbania spp. 5 sand cordgrass Spartina bakeri 5 60

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Seminole / Monroe Aquatic plant data collected on August 14, 2008 Percent area covered with aquatic vegetation (PAC, %) 0.0 Percent of lake's volume filled with vegetation (PVI, %) 0.0 Average emergent plant biomass (kg wet wt/m2) 5.6 Average floating-leaved plant biomass (kg wet wt/m2) 5.5 Average submersed plant biomass (kg wet wt/m2) 2.4 Average width of emergent and floating-leaved zone (ft.) 678.0 Average lake depth (m) 2.0 Frequency that plant species occur in 5 evenly spaced transects around the lake (this is a lower number of transects than previous sampling due to high water/closing of waterway due to tropical storm Fay). Common Name Plant Species Frequency (%) water-lettuce Pistia stratiotes 100 common salvinia Salvinia rotundifolia 100 coontail Ceratophyllum demersum 80 floating water-hyacinth Eichhornia crassipes 80 hydrilla Hydrilla verticillata 80 giant reed Phragmites australis 80 tapegrass Vallisneria americana 80 alligator-weed Alternanthera philoxeroides 60 common duckweed Lemna minor 60 southern naiad Najas guadalupensis 60 willow Salix spp. 60 giant bulrush Scirpus californicus 60 water-pennywort Hydrocotyle umbellata 40 American lotus Nelumbo lutea 40 American cupscale Sacciolepis striata 40 cat-tail Typha spp. 40 azolla Azolla caroliniana 20 big rose mallow Hibiscus grandiflorus 20 water primrose Ludwigia octovalvis 20 Egyptian paspalidium Paspalidium geminatum 20 smartweed Polygonum hydropiperoides 20 bald cypress Taxodium distichum 20 water-meal Wolffia spp. 20 61

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Walton / Juniper East Aquatic plant data collected on July 29, 2008 Percent area covered with aquatic vegetation (PAC, %) Percent of lake's volume filled with vegetation (PVI, %) Average emergent plant biomass (kg wet wt/m2) 4.0 Average floating-leaved plant biomass (kg wet wt/m2) 0.7 Average submersed plant biomass (kg wet wt/m2) 13.1 Average width of emergent and floating-leaved zone (ft.) 39.7 Average lake depth (m) Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) lemon bacopa Bacopa caroliniana 100 American cupscale Sacciolepis striata 80 water primrose Ludwigia octovalvis 60 torpedograss Panicum repens 60 fragrant water-lily Nymphaea odorata 50 respuinata bladderwort Utricularia resupinata 50 swamp titi Cyrilla racemiflora 30 slender spikerush Eleocharis baldwinii 30 red root Lachnanthes caroliniana 30 red ludwigia Ludwigia repens 30 banana-lily Nymphoides aquatica 30 red maple Acer rubrum 20 flat-sedge Cyperus odoratus 20 spatterdock Nuphar luteum 20 alligator-weed Alternanthera philoxeroides 10 elephant-ear Colocasia esculenta 10 Fimbristylis miliacea 10 water-pennywort Hydrocotyle umbellata 10 sweetbay Magnolia virginiana 10 wax myrtle Myrica cerifera 10 American lotus Nelumbo lutea 10 pickerelweed Pontederia cordata 10 few flowered beakrush Rhynchospora rariflora 10 common arrowhead Sagittaria latifolia 10 cat-tail Typha spp. 10 Florida bladderwort Utricularia floridana 10 62

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Walton / Juniper West Aquatic plant data collected on July 30, 2008 Percent area covered with aquatic vegetation (PAC, %) Percent of lake's volume filled with vegetation (PVI, %) Average emergent plant biomass (kg wet wt/m2) 10.8 Average floating-leaved plant biomass (kg wet wt/m2) 1.1 Average submersed plant biomass (kg wet wt/m2) 13.1 Average width of emergent and floating-leaved zone (ft.) 84.2 Average lake depth (m) Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) lemon bacopa Bacopa caroliniana 100 American cupscale Sacciolepis striata 100 banana-lily Nymphoides aquatica 70 water primrose Ludwigia octovalvis 60 swamp titi Cyrilla racemiflora 50 torpedograss Panicum repens 50 slender spikerush Eleocharis baldwinii 40 red root Lachnanthes caroliniana 40 St. John's wort Hypericum spp. 30 red ludwigia Ludwigia repens 30 fragrant water-lily Nymphaea odorata 30 respuinata bladderwort Utricularia resupinata 30 red maple Acer rubrum 20 alligator-weed Alternanthera philoxeroides 20 water-shield Brasenia schreberi 20 flat-sedge Cyperus odoratus 20 wax myrtle Myrica cerifera 20 smartweed Polygonum hydropiperoides 20 inundated beak-rush Rhynchospora inundata 20 Florida bladderwort Utricularia floridana 20 giant spikerush Eleocharis interstincta 10 Fimbristylis miliacea 10 water-pennywort Hydrocotyle umbellata 10 Juncus trigonocarpus 10 bog-moss Mayaca fluviatilis 10 spatterdock Nuphar luteum 10 pickerelweed Pontederia cordata 10 dwarf arrowhead Sagittaria subulata 10 bladderwort Utricularia foliosa 10 63

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Walton / Spring Aquatic plant data collected on July 30, 2008 Percent area covered with aquatic vegetation (PAC, %) Percent of lake's volume filled with vegetation (PVI, %) Average emergent plant biomass (kg wet wt/m2) 2.8 Average floating-leaved plant biomass (kg wet wt/m2) 1.7 Average submersed plant biomass (kg wet wt/m2) 1.8 Average width of emergent and floating-leaved zone (ft.) 27.4 Average lake depth (m) Frequency that plant species occur in 10 evenly spaced transects around the lake. Common Name Plant Species Frequency (%) slender spikerush Eleocharis baldwinii 100 torpedograss Panicum repens 100 red ludwigia Ludwigia repens 90 Florida bladderwort Utricularia floridana 90 water-shield Brasenia schreberi 80 bog-moss Mayaca fluviatilis 80 red root Lachnanthes caroliniana 60 small headed beakrush Rhynchospora microcephala 40 swamp titi Cyrilla racemiflora 30 Fimbristylis miliacea 30 water-pennywort Hydrocotyle umbellata 30 Savanna seedbox Ludwigia virgata 20 sweetbay Magnolia virginiana 20 banana-lily Nymphoides aquatica 20 maidencane Panicum hemitomon 20 duck-potato Sagittaria lancifolia 20 cat-tail Typha spp. 20 horned bladderwort Utricularia cornuta 20 buttonbush Cephalanthus occidentalis 10 buttonweed Diodia virginiana 10 loblolly bay Gordonia lasianthus 10 soft rush Juncus effusus 10 water primrose Ludwigia octovalvis 10 wax myrtle Myrica cerifera 10 fragrant water-lily Nymphaea odorata 10 common arrowhead Sagittaria latifolia 10 yellow-eyed grass Xyris spp. 10 64

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Appendix C: Water chemistry data for all lakes sampled in 2008 as part of the long term monitoring program. 65

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Lochloosa (Alachua County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'2.6", Longitude 82'22.5" Period of record: 133 sampling dates; 9/3/93 to 1/27/09 Surface Area (LAKEWATCH): 5648.7 acres / 2286 hectares Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Alachua Prairies subdivision of the Northern Peninsual Plains division of the Ocala Uplift District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 7 sampling dates: pH 7.4 Total alkalinity (mg/L as CaCO3) 24.4 Conductance (S/cm @ 25 C) 90 Color (Pt-Co units) 89 Chloride (mg/L) 11.6 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 133 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 29 69 180 Long-term total nitrogen concentrations (g/L) 750 2250 6460 Long-term total chlorophyll concentrations (g/L) 9.2 93.8 348.8 Long-term Secchi depth (ft) 0.5 1.7 5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 4 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/30/08 83 3225 97.7 0.6 3/26/08 92 3328 190 0.7 4/22/08 74 3860 246.2 0.5 5/14/08 73 4028 172 0.9 6/26/08 61 3272 137.8 0.8 7/28/08 62 3678 181.5 0.5 8/29/08 71 2938 146.8 0.7 9/30/08 52 2720 142.5 0.9 10/30/08 50 2958 133 0.6 11/25/08 56 2982 104.5 0.9 2008 Average 67 3299 155.2 0.7 66

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Newnan (Alachua County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'55.9", Longitude 82'20.2" Period of record: 116 sampling dates; 9/10/93 to 12/31/08 Surface Area (Shafer et al. 1986): 7427 acres / 3006 hectares Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, clayey fine sand, and clay of the Bone Valley Formation, and by the phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Newnans Lake Basin subdivision of the Northern Peninsual Plains division of the Ocala Uplift District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 6.9 Total alkalinity (mg/L as CaCO3) 12.4 Conductance (S/cm @ 25 C) 67 Color (Pt-Co units) 145 Chloride (mg/L) 11.4 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 116 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 58 142 347.7 Long-term total nitrogen concentrations (g/L) 1250 3335 11500 Long-term total chlorophyll concentrations (g/L) 19 194.2 493.3 Long-term Secchi depth (ft) 0.4 1.1 2.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/28/08 200 3410 97.1 1 2/28/08 215 3323 129.3 1 3/20/08 138 2923 121.7 1 4/29/08 167 3650 214.3 1 5/30/08 140 2293 62.7 1.5 6/29/08 192 3550 211.3 1 7/25/08 218 4097 256.3 1 8/30/08 255 4067 242.3 0.8 9/29/08 120 2677 103.7 1.3 10/30/08 223 3897 187 0.8 11/29/08 194 3860 154 0.8 12/31/08 258 4797 217.3 0.8 2008 Average 193 3545 166.4 1 67

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Orange (Alachua County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'49.9", Longitude 82'52" Period of record: 129 sampling dates; 9/3/93 to 11/25/08 Surface Area (LAKEWATCH): 13859.8 acres / 5609 hectares Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by terrace deposits of surface sand over clayey sand and clay with basal deposits of limestone of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Alachua Prairies subdivision of the Northern Peninsual Plains division of the Ocala Uplift District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 4 sampling dates: pH 7.1 Total alkalinity (mg/L as CaCO3) 19.4 Conductance (S/cm @ 25 C) 74 Color (Pt-Co units) 53 Chloride (mg/L) 10.8 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 129 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 22 74 302.7 Long-term total nitrogen concentrations (g/L) 955 1785 5483.3 Long-term total chlorophyll concentrations (g/L) 5.2 51.6 307.5 Long-term Secchi depth (ft) 0.7 2.5 7 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 4 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/30/08 61 2222 40.3 0.9 3/26/08 89 2940 108.5 0.8 4/22/08 73 3308 121.5 1.2 5/14/08 54 3062 23.5 1.9 6/26/08 60 2105 49.5 1.5 7/29/08 52 2715 83.5 1.2 8/29/08 72 2865 136.2 0.9 9/30/08 61 2433 73.5 1.1 10/30/08 48 2112 36.8 1.5 11/25/08 38 1772 20 1.6 2008 Average 61 2554 69.3 1.3 68

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Santa Fe (Alachua County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'19.2", Longitude 82'20.1" Period of record: 253 sampling dates; 8/16/86 to 12/3/08 Surface Area (LAKEWATCH): 4970 acres / 2011 hectares Lake Region (Griffith et al. 1997): Upper Santa Fe Flatwoods (75-03) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Perched Lake and Prairies division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 7 sampling dates: pH 5.9 Total alkalinity (mg/L as CaCO3) 1.8 Conductance (S/cm @ 25 C) 60 Color (Pt-Co units) 30 Chloride (mg/L) 12.7 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 253 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 4 11 39 Long-term total nitrogen concentrations (g/L) 273 468 846.7 Long-term total chlorophyll concentrations (g/L) 1.3 7.2 34.3 Long-term Secchi depth (ft) 3.3 7.4 17.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 4/2/08 19 630 9.3 5.5 5/26/08 24 670 14.7 4.9 6/25/08 20 807 26 4.2 8/26/08 29 753 31.7 4.9 9/28/08 20 657 14.7 5.8 10/30/08 18 593 12.7 6.3 12/3/08 14 600 13.3 6.3 2008 Average 21 673 17.5 5.4 69

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Wauberg (Alachua County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'48.4", Longitude 82'1.74" Period of record: 214 sampling dates; 3/31/90 to 11/26/08 Surface Area (LAKEWATCH): 370.6 acres / 150 hectares Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by clayey sand and clay with sandy to clayey limestone of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Fairfield Hills subdivision of the Marion Hills division of the Ocala Uplift District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 10 sampling dates: pH 7.6 Total alkalinity (mg/L as CaCO3) 20.3 Conductance (S/cm @ 25 C) 82 Color (Pt-Co units) 25 Chloride (mg/L) 13.1 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 214 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 54 126 317.3 Long-term total nitrogen concentrations (g/L) 1153 1920 3240 Long-term total chlorophyll concentrations (g/L) 29.7 97.2 240.3 Long-term Secchi depth (ft) 1 1.9 3.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/27/08 158 2323 111 1.5 2/23/08 148 2260 94.3 2 3/27/08 130 2340 93.7 1.8 4/28/08 131 2140 68.3 2 5/22/08 172 2843 163.7 1.3 6/18/08 135 2557 140 1.5 7/19/08 142 2677 152.3 1.5 8/29/08 138 2537 149 1.5 9/24/08 123 2520 140.3 10/31/08 109 2067 86.7 2 11/26/08 112 1983 86 2 2008 Average 136 2386 116.8 1.7 70

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Deer Point (Bay County) LAKEWATCH Water Chemistry Summary Location: Latitude 30'24.18", Longitude 8535'30.05" Period of record: 77 sampling dates; 1/10/90 to 12/11/08 Surface Area (Shafer et al. 1986): 5000 acres / 2024 hectares Lake Region (Griffith et al. 1997): Gulf Coast Lowlands (75-01) Geologic formation (Brooks 1981): The geology is dominated by fine sand and silt with lenses of gravel and clay of the Apalachicola paleo-cuspate delta and alluvial plain Physiographic region (Brooks 1981): The lake lies in the Delta Plain division of the Apalachicola Delta District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 6.9 Total alkalinity (mg/L as CaCO3) 28.5 Conductance (S/cm @ 25 C) 75 Color (Pt-Co units) 48 Chloride (mg/L) 5.8 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 77 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 3 8 16.5 Long-term total nitrogen concentrations (g/L) 70 249 566.7 Long-term total chlorophyll concentrations (g/L) 0.0E+01 1.7 5 Long-term Secchi depth (ft) 2.5 6.6 12 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 7/31/08 8 230 5 7.5 9/25/08 10 347 3 10/15/08 16 303 0.7 6.2 12/11/08 16 420 . 2008 Average 13 325 2.9 6.9 71

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Sampson (Bradford County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'32.3", Longitude 82'25" Period of record: 117 sampling dates; 4/16/99 to 12/25/08 Surface Area (LAKEWATCH): 1865.6 acres / 755 hectares Lake Region (Griffith et al. 1997): Upper Santa Fe Flatwoods (75-03) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Perched Lake and Prairies division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 6.8 Total alkalinity (mg/L as CaCO3) 9.3 Conductance (S/cm @ 25 C) 143 Color (Pt-Co units) 66 Chloride (mg/L) 17.9 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 117 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 5 23 66.7 Long-term total nitrogen concentrations (g/L) 347 713 1393.3 Long-term total chlorophyll concentrations (g/L) 1 7 33.7 Long-term Secchi depth (ft) 1.5 4.8 11.3 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/27/08 18 633 4 5.7 2/24/08 19 683 7.7 6.3 3/23/08 18 780 3.3 5.3 4/27/08 16 747 5.7 5 5/26/08 20 767 8.7 4.8 6/21/08 23 840 20.7 4.7 7/19/08 22 750 12.7 4.2 8/24/08 16 623 6.7 4.8 9/21/08 25 1120 11.3 3 10/19/08 24 1000 7.3 3.3 11/24/08 17 863 3.3 5.5 12/25/08 20 847 4.3 4.9 2008 Average 20 804 8 4.8 72

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Poinsett (Brevard County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'23.7", Longitude 80'10.4" Period of record: 24 sampling dates; 2/18/93 to 11/21/08 Surface Area (Shafer et al. 1986): 4334 acres / 1754 hectares Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation Physiographic region (Brooks 1981): The lake lies in the St Johns Wet Prairie division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 4 sampling dates: pH 7.7 Total alkalinity (mg/L as CaCO3) 62.5 Conductance (S/cm @ 25 C) 785 Color (Pt-Co units) 98 Chloride (mg/L) 204.3 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 24 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 39 117 355.3 Long-term total nitrogen concentrations (g/L) 1043 2229 4543.3 Long-term total chlorophyll concentrations (g/L) 2.3 21.5 76.3 Long-term Secchi depth (ft) 0.5 1.4 3.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 83 2433 12.3 1.2 2/28/08 88 2507 27 0.9 3/21/08 119 3407 59.7 0.8 4/22/08 49 1473 6.7 2.3 5/22/08 93 2190 29 1.2 6/24/08 48 1437 7 7/22/08 91 1413 13 2.5 8/26/08 147 1680 5 1.8 9/17/08 233 1590 57.3 1.1 10/16/08 147 1613 4.3 1 11/21/08 . 2.3 1.9 2008 Average 110 1974 20.3 1.5 73

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Trafford (Collier County) LAKEWATCH Water Chemistry Summary Location: Latitude 26'18.95", Longitude 8129'36.47" Period of record: 21 sampling dates; 5/15/01 to 12/13/08 Surface Area (Shafer et al. 1986): 1494 acres / 605 hectares Lake Region (Griffith et al. 1997): Immokalee Rise (75-37) Geologic formation (Brooks 1981): The geology is dominated clastic and shell deposits of the Fort Thompson Group Formation Physiographic region (Brooks 1981): The lake lies in the Corkscrew Swamp division of the Southwestern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 3 sampling dates: pH 8.4 Total alkalinity (mg/L as CaCO3) 110.8 Conductance (S/cm @ 25 C) 225 Color (Pt-Co units) 48 Chloride (mg/L) 27.1 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 21 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 68 198 505 Long-term total nitrogen concentrations (g/L) 1930 3224 5563.3 Long-term total chlorophyll concentrations (g/L) 16 44 78 Long-term Secchi depth (ft) 0.8 1.4 2 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/17/08 127 4710 55.7 1 2/18/08 103 3670 40 1.3 3/17/08 110 3630 44 1 4/16/08 111 3683 39.7 0.9 5/14/08 122 4367 50.7 0.8 6/17/08 90 3627 41.7 1 7/15/08 95 3177 62.7 1.3 8/14/08 414 3807 67.7 2 9/18/08 505 2053 28.7 1.9 10/16/08 477 1930 32.7 2 11/13/08 440 1997 30.7 2 12/13/08 406 2647 16 1.6 2008 Average 250 3275 42.5 1.4 74

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Talquin (Gadsden County) LAKEWATCH Water Chemistry Summary Location: Latitude 30'54.7", Longitude 84'13.4" Period of record: 47 sampling dates; 1/6/92 to 12/7/08 Surface Area (Shafer et al. 1986): 8850 acres / 3582 hectares Lake Region (Griffith et al. 1997): Tifton/Tallahassee Uplands (65-04) Geologic formation (Brooks 1981): The geology is dominated by clayey sand and clay with sandy to clayey limestone of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Quincy Hills division of the Tifton Uplands District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 7 sampling dates: pH 6.5 Total alkalinity (mg/L as CaCO3) 19.0 Conductance (S/cm @ 25 C) 83 Color (Pt-Co units) 48 Chloride (mg/L) 12.7 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 47 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 35 57 97 Long-term total nitrogen concentrations (g/L) 437 845 1390 Long-term total chlorophyll concentrations (g/L) 5 36.8 84 Long-term Secchi depth (ft) 1.4 2.9 3.9 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/7/08 53 650 18.7 3.2 2/15/08 75 1180 43 2.6 3/16/08 86 1390 17.3 1.4 4/6/08 75 1200 22.7 2.5 6/1/08 72 1293 44 2.3 7/6/08 57 1080 51.7 2.8 8/3/08 45 973 36.7 3.3 9/1/08 97 1160 6 1.7 10/4/08 87 1267 58.3 2.5 11/9/08 65 1117 43.3 2.3 12/7/08 67 1113 15.7 2.2 2008 Average 71 1129 32.5 2.4 75

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Dead (Gulf County) LAKEWATCH Water Chemistry Summary Location: Latitude 30'20.97", Longitude 85'44.68" Period of record: 4 sampling dates; 5/24/07 to 10/15/08 Surface Area (Shafer et al. 1986): 3655 acre / 1479 hectare Lake Region (Griffith et al. 1997): Gulf Coast Lowlands (75-01) Geologic formation (Brooks 1981): The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene Physiographic region (Brooks 1981): The lake lies in the Coastal Strip division of the Apalachicola Delta District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 2 sampling dates: pH 7.4 Total alkalinity (mg/L as CaCO3) 70.5 Conductance (S/cm @ 25 C) 160 Color (Pt-Co units) 21 Chloride (mg/L) 6.3 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 4 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 11 20 36 Long-term total nitrogen concentrations (g/L) 593 736 895 Long-term total chlorophyll concentrations (g/L) 2.5 9.2 14 Long-term Secchi depth (ft) 4.2 4.4 4.7 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 7/31/08 18 810 11 4.2 9/25/08 11 895 2.5 10/15/08 36 647 . 2008 Average 22 784 6.8 4.2 76

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Istokpoga (Highlands County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'24.66", Longitude 8116'11.94" Period of record: 155 sampling dates; 2/24/96 to 12/17/08 Surface Area (LAKEWATCH): 30116.54 acres / 12188 hectares Lake Region (Griffith et al. 1997): Kissimmee/Okeechobee Lowland (75-35) Geologic formation (Brooks 1981): The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene Physiographic region (Brooks 1981): The lake lies in the Istokpoga Prairie division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 7.0 Total alkalinity (mg/L as CaCO3) 12.8 Conductance (S/cm @ 25 C) 115 Color (Pt-Co units) 106 Chloride (mg/L) 16.7 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 155 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 16 56 107.3 Long-term total nitrogen concentrations (g/L) 753 1330 2586.7 Long-term total chlorophyll concentrations (g/L) 2 38.6 90.7 Long-term Secchi depth (ft) 1.2 2.6 6.7 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 40 1170 27.3 2.8 2/24/08 32 1143 22.3 2.8 3/27/08 40 1237 21 3.2 4/14/08 44 1360 27 2.8 5/17/08 50 1443 23.7 2.3 6/20/08 40 1507 . 7/25/08 46 1420 48.3 2.2 8/25/08 44 1220 27 2.3 9/20/08 55 1753 68.3 1.5 10/23/08 56 1633 64.7 2 11/21/08 51 1463 49.3 2 12/17/08 50 1400 37.7 2 2008 Average 46 1396 37.9 2.4 77

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Istokpoga North (Highlands County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'2.4", Longitude 81'39" Period of record: 137 sampling dates; 2/10/96 to 12/16/08 Surface Area (LAKEWATCH): 30116.54 acres / 12188 hectares Lake Region (Griffith et al. 1997): Kissimmee/Okeechobee Lowland (75-35) Geologic formation (Brooks 1981): The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene Physiographic region (Brooks 1981): The lake lies in the Istokpoga Prairie division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 2 sampling dates: pH 7.5 Total alkalinity (mg/L as CaCO3) 16.0 Conductance (S/cm @ 25 C) 173 Color (Pt-Co units) 79 Chloride (mg/L) 22.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 137 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 36 72 215.7 Long-term total nitrogen concentrations (g/L) 830 1327 2113.3 Long-term total chlorophyll concentrations (g/L) 5.3 43.6 110.3 Long-term Secchi depth (ft) 1 1.9 3.9 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/14/08 46 1467 43.3 1.9 2/15/08 55 1477 54.3 1.8 3/13/08 62 1630 53.7 1.4 4/17/08 60 1563 50 1.6 5/13/08 65 1707 66 1.2 6/14/08 51 1590 50 1.5 7/15/08 68 1500 43.7 1.6 8/14/08 69 1467 44.3 1.5 9/11/08 126 1703 45.3 1 10/15/08 86 1530 77.7 1.1 11/14/08 56 1253 51.3 1.6 12/16/08 60 1333 49 1.5 2008 Average 67 1518 52.4 1.5 78

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Josephine Center (Highlands County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'37.32", Longitude 8126'45.51" Period of record: 145 sampling dates; 3/16/96 to 12/26/08 Surface Area (LAKEWATCH): 1433 acre / 580 hectare (whole lake area) Lake Region (Griffith et al. 1997): Lake Wales Ridge Transition (75-34) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Eastern Complex of the Central Ridge subdivision of the Lake Wales Ridge division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 6.3 Total alkalinity (mg/L as CaCO3) 3.7 Conductance (S/cm @ 25 C) 88 Color (Pt-Co units) 101 Chloride (mg/L) 17.6 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 145 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 32 68 162 Long-term total nitrogen concentrations (g/L) 523 1036 1493.3 Long-term total chlorophyll concentrations (g/L) 8 24.8 57.7 Long-term Secchi depth (ft) 1 1.7 6.8 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/11/08 47 1050 26.7 1.5 2/23/08 60 1083 33.7 1.5 3/27/08 76 1387 51.7 1.5 4/26/08 60 973 32.7 1.5 5/28/08 79 1467 38 1.5 6/24/08 72 1440 44 1.5 7/29/08 89 1170 29.3 1.5 8/29/08 104 1143 30.3 1.5 9/15/08 77 1163 21 1.3 10/24/08 74 1300 28 1.5 11/14/08 62 890 16.7 1.5 12/26/08 56 897 20.7 1.5 2008 Average 71 1164 31.1 1.5 79

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Josephine East (Highlands County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'37.26", Longitude 8125'27.36" Period of record: 135 sampling dates; 5/9/95 to 12/17/08 Surface Area (LAKEWATCH): 1433 acre / 580 hectare (whole lake area) Lake Region (Griffith et al. 1997): Lake Wales Ridge Transition (75-34) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Eastern Complex of the Central Ridge subdivision of the Lake Wales Ridge division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 6.5 Total alkalinity (mg/L as CaCO3) 3.5 Conductance (S/cm @ 25 C) 102 Color (Pt-Co units) 69 Chloride (mg/L) 16.9 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 135 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 22 49 127.7 Long-term total nitrogen concentrations (g/L) 623 987 1490 Long-term total chlorophyll concentrations (g/L) 13.7 34.9 104 Long-term Secchi depth (ft) 1.2 2.3 4.7 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/15/08 43 867 24.7 1.8 3/13/08 44 810 22 1.8 4/17/08 46 1070 44.7 1.3 7/16/08 44 837 22 1.6 9/26/08 42 1007 31.7 1.9 10/17/08 43 807 40.7 1.6 11/24/08 44 877 32 1.4 12/17/08 39 733 30.7 1.6 2008 Average 43 876 31 1.6 80

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Josephine West (Highlands County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'9.61", Longitude 81'7.43" Period of record: 147 sampling dates; 3/16/96 to 12/26/08 Surface Area (LAKEWATCH): 1433 acre / 580 hectare (whole lake area) Lake Region (Griffith et al. 1997): Lake Wales Ridge Transition (75-34) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Eastern Complex of the Central Ridge subdivision of the Lake Wales Ridge division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 6.1 Total alkalinity (mg/L as CaCO3) 3.9 Conductance (S/cm @ 25 C) 87 Color (Pt-Co units) 134 Chloride (mg/L) 18.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 147 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 47 102 206.3 Long-term total nitrogen concentrations (g/L) 665 1063 1596.7 Long-term total chlorophyll concentrations (g/L) 8 22.5 94 Long-term Secchi depth (ft) 1 1.5 2.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/11/08 47 833 9 2.5 2/23/08 62 797 13 1.7 3/27/08 68 930 17 1.5 4/26/08 58 665 13.3 1.5 5/28/08 76 1127 20.7 1.5 6/24/08 65 877 23.3 1.5 7/29/08 57 1063 21.7 1.5 8/29/08 158 1310 22.3 1.5 9/15/08 133 1213 17.3 1.5 10/24/08 107 1277 16.7 1.5 11/14/08 90 913 12.3 1.5 12/26/08 79 850 12 1.5 2008 Average 83 988 16.6 1.6 81

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June (Highlands County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'59.76", Longitude 8123'54.18" Period of record: 161 sampling dates; 4/22/94 to 12/15/08 Surface Area (LAKEWATCH): 5724 acres / 2317 hectares Lake Region (Griffith et al. 1997): Southern Lake Wales Ridge (75-33) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Eastern Complex of the Central Ridge subdivision of the Lake Wales Ridge division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 7 sampling dates: pH 6.8 Total alkalinity (mg/L as CaCO3) 6.9 Conductance (S/cm @ 25 C) 152 Color (Pt-Co units) 11 Chloride (mg/L) 21.5 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 161 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 5 13 25 Long-term total nitrogen concentrations (g/L) 293 560 920 Long-term total chlorophyll concentrations (g/L) 3 10.1 25 Long-term Secchi depth (ft) 2.3 6.9 12.1 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/10/08 11 483 6 7.6 2/18/08 13 503 9.3 6.2 3/19/08 16 517 7.7 5 4/12/08 14 510 7 6.9 6/13/08 10 537 5.7 8.4 7/13/08 11 400 7 8.5 8/14/08 14 520 13.7 6.5 9/1/08 11 620 14.3 2.3 10/14/08 16 457 16 5.3 11/8/08 14 293 8.3 6 12/15/08 17 577 11.3 5.7 2008 Average 13 492 9.7 6.2 82

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Wilson (Hillsborough County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'46.5", Longitude 82'12.6" Period of record: 89 sampling dates; 2/21/93 to 10/11/08 Surface Area (LAKEWATCH): 62 acres / 25 hectares Lake Region (Griffith et al. 1997): Land-o-Lakes (75-24) Geologic formation (Brooks 1981): The geology is dominated by argillaceous to sandy impure limestone of the Tampa Formation Physiographic region (Brooks 1981): The lake lies in the Land-o-Lakes subdivision of the Tampa Plain division of the Ocala Uplift District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 3 sampling dates: pH 6.6 Total alkalinity (mg/L as CaCO3) 16.1 Conductance (S/cm @ 25 C) 258 Color (Pt-Co units) 27 Chloride (mg/L) 59.5 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 89 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 8 18 32 Long-term total nitrogen concentrations (g/L) 560 791 1156.7 Long-term total chlorophyll concentrations (g/L) 3.7 9.8 32.3 Long-term Secchi depth (ft) 4 6.8 10.7 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 7/30/08 20 713 12.7 6.4 10/11/08 13 720 9 6.5 2008 Average 17 717 10.8 6.5 83

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Farm 13 (Indian River County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'20.4", Longitude 80'15.66" Period of record: 91 sampling dates; 1/30/01 to 11/26/08 Surface Area : acre / hectare Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated clastic and shell deposits of the Fort Thompson Group Formation Physiographic region (Brooks 1981): The lake lies in the Upper St Johns Karst division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 2 sampling dates: pH 8.0 Total alkalinity (mg/L as CaCO3) 126.5 Conductance (S/cm @ 25 C) 855 Color (Pt-Co units) 76 Chloride (mg/L) 157.5 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 91 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 38 142 537 Long-term total nitrogen concentrations (g/L) 1140 1779 3230 Long-term total chlorophyll concentrations (g/L) 8.3 44.4 189.3 Long-term Secchi depth (ft) 0.9 2.4 5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 87 2030 35.3 1.4 2/29/08 89 2013 31.3 1.4 3/26/08 96 2213 28 1.2 4/22/08 78 1937 28 2 5/23/08 84 1840 37 2.5 6/25/08 96 2047 56 2.2 7/21/08 87 1867 51 2 8/28/08 210 1697 34.7 2.3 9/18/08 537 1650 18 2 10/16/08 435 1877 15 1.9 11/26/08 373 1743 11.7 1.4 2008 Average 198 1901 31.5 1.8 84

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Stick Marsh (Indian River County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'56.52", Longitude 8042'32.58" Period of record: 91 sampling dates; 1/30/01 to 11/26/08 Surface Area (LAKEWATCH): 2379 acres / 963 hectares Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated clastic and shell deposits of the Fort Thompson Group Formation Physiographic region (Brooks 1981): The lake lies in the Upper St Johns Karst division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 2 sampling dates: pH 7.9 Total alkalinity (mg/L as CaCO3) 129.5 Conductance (S/cm @ 25 C) 846 Color (Pt-Co units) 76 Chloride (mg/L) 161.3 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 91 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 49 133 482 Long-term total nitrogen concentrations (g/L) 1243 1778 2976.7 Long-term total chlorophyll concentrations (g/L) 7.3 48.3 151.3 Long-term Secchi depth (ft) 0.7 2.2 4.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 94 2080 34 1.4 2/29/08 88 1923 40.3 1.7 3/26/08 92 2193 33.3 1.3 4/22/08 69 1623 20.3 2.6 5/23/08 81 1797 31.7 2.2 6/25/08 97 2090 53.7 1.7 7/21/08 108 1973 61.3 2 8/28/08 161 1663 44.7 1.8 9/18/08 482 1623 37 2 10/16/08 394 1677 13 1.9 11/26/08 368 1620 14.7 1.6 2008 Average 185 1842 34.9 1.8 85

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Cherry (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'47.9", Longitude 81'53.7" Period of record: 87 sampling dates; 5/9/90 to 9/28/08 Surface Area (LAKEWATCH): 613 acres / 248 hectares Lake Region (Griffith et al. 1997): Clermont Uplands (75-19) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Groveland Karst division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 13 sampling dates: pH 5.9 Total alkalinity (mg/L as CaCO3) 2.6 Conductance (S/cm @ 25 C) 86 Color (Pt-Co units) 88 Chloride (mg/L) 18.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 87 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 6 15 41.3 Long-term total nitrogen concentrations (g/L) 457 929 1940 Long-term total chlorophyll concentrations (g/L) 1.3 5.6 25.7 Long-term Secchi depth (ft) 1.4 5.9 14.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/30/08 15 1120 6.7 3.5 2/25/08 13 970 5 3.8 3/29/08 13 1063 4.7 4.4 4/27/08 14 827 4 4 7/30/08 18 1027 9 4 8/29/08 14 1063 6.3 4.5 9/28/08 13 947 4.7 4.3 2008 Average 14 1002 5.8 4.1 86

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Dorr (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 29.0E+01'12.18", Longitude 81'44.52" Period of record: 178 sampling dates; 1/30/90 to 12/16/08 Surface Area (LAKEWATCH): 1877 acres / 759 hectares Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation Physiographic region (Brooks 1981): The lake lies in the St Johns Offset division and the Mount Dora Ridge subdivision of the Apopka Upland division of the Centra Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 10 sampling dates: pH 5.4 Total alkalinity (mg/L as CaCO3) 1.2 Conductance (S/cm @ 25 C) 63 Color (Pt-Co units) 89 Chloride (mg/L) 13.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 178 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 11 18 32.3 Long-term total nitrogen concentrations (g/L) 310 482 796.7 Long-term total chlorophyll concentrations (g/L) 2 11 29.3 Long-term Secchi depth (ft) 1 2.8 6.7 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 19 537 10 3.5 2/28/08 21 590 9 2.8 3/20/08 21 637 9 2 4/29/08 19 797 8.3 2 5/28/08 26 563 11.3 1.7 6/19/08 29 617 23 3.5 7/30/08 26 667 16.7 2.5 8/29/08 24 670 15 2.5 9/26/08 32 580 20 2.1 10/29/08 27 657 10.3 1.7 11/28/08 30 600 7.7 2 12/16/08 28 613 13 1.9 2008 Average 25 627 12.8 2.4 87

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Grasshopper (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'59.76", Longitude 81'1.02" Period of record: 222 sampling dates; 1/30/90 to 12/16/08 Surface Area (LAKEWATCH): 197 acres / 47 hectares Lake Region (Griffith et al. 1997): Ocala Scrub (75-09) Geologic formation (Brooks 1981): The geology is dominated by sand dunes and well sorted fine sand of the Pleistocene Physiographic region (Brooks 1981): The lake lies in the Ocala Scrub division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 9 sampling dates: pH 4.5 Total alkalinity (mg/L as CaCO3) 0.0 Conductance (S/cm @ 25 C) 60 Color (Pt-Co units) 30 Chloride (mg/L) 12.3 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 222 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 0.0E+01 6 14.7 Long-term total nitrogen concentrations (g/L) 43 464 1760 Long-term total chlorophyll concentrations (g/L) 1 2.8 14.7 Long-term Secchi depth (ft) 1 7.3 16.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 7 260 2 13.5 2/28/08 5 317 2 3/21/08 4 300 1.3 4/30/08 4 217 1.7 5/28/08 4 183 1.3 6/19/08 3 157 1.7 7/29/08 4 200 2.3 8/29/08 9 353 4.3 7.7 9/26/08 8 660 5.3 3.5 10/30/08 11 837 2 3.1 11/28/08 7 880 1.7 2.9 12/16/08 8 897 2 3.1 2008 Average 6 438 2.3 5.6 88

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Griffin (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'31.62", Longitude 8151'5.1" Period of record: 128 sampling dates; 5/8/90 to 12/15/08 Surface Area (Shafer et al. 1986): 16505 acres / 6679 hectares Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Central Lakes division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 7 sampling dates: pH 8.7 Total alkalinity (mg/L as CaCO3) 102.1 Conductance (S/cm @ 25 C) 298 Color (Pt-Co units) 23 Chloride (mg/L) 28.9 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 128 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 27 65 126.7 Long-term total nitrogen concentrations (g/L) 1510 3027 5463.3 Long-term total chlorophyll concentrations (g/L) 11 138.2 384 Long-term Secchi depth (ft) 0.5 1.4 4.3 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 44 2847 52 2 2/25/08 47 3010 55.7 1.8 3/25/08 56 2953 83 1.6 4/23/08 50 2783 59.7 1.8 5/28/08 43 2630 74 1.3 6/23/08 40 2923 94 1.5 8/26/08 38 2547 87.7 1.6 9/18/08 35 2557 84.3 1.5 10/21/08 43 2687 95.3 1.6 11/25/08 36 2537 53.7 1.8 12/15/08 42 2973 34.3 2 2008 Average 43 2768 70.3 1.7 89

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Griffin North (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'1.32", Longitude 81'27" Period of record: 79 sampling dates; 5/18/95 to 3/16/08 Surface Area .: 16505 acres / 6679 hectares (whole lake area) Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Central Lakes division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 79 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 26 71 134 Long-term total nitrogen concentrations (g/L) 1613 3189 5716.7 Long-term total chlorophyll concentrations (g/L) 15 146 401.3 Long-term Secchi depth (ft) 0.6 1.4 5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/6/08 46 3033 42.9 1.7 3/16/08 47 2593 60 1.4 2008 Average 46 2813 51.4 1.6 90

PAGE 99

Griffin West (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'44.5", Longitude 81'24.4" Period of record: 65 sampling dates; 6/21/03 to 12/10/08 Surface Area : 16505 acres / 6679 hectares (whole lake area) Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Central Lakes division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 65 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 32 64 124 Long-term total nitrogen concentrations (g/L) 1217 1850 2810 Long-term total chlorophyll concentrations (g/L) 10 55.7 234 Long-term Secchi depth (ft) 1.4 2.1 3.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/27/08 32 1600 18.7 2.6 2/24/08 37 1750 24 2.4 3/29/08 45 1827 46 2.2 4/29/08 47 1810 40 2.2 5/25/08 54 1967 49.7 2.2 6/28/08 47 1750 40.3 2.8 7/13/08 41 1607 45.7 2.3 8/27/08 55 1217 42 1.5 9/13/08 59 1927 44.7 1.5 10/18/08 52 2075 45 2 11/15/08 51 1780 59.3 2 12/10/08 . 30.3 2.8 2008 Average 47 1755 40.5 2.2 91

PAGE 100

Harris (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'37.2", Longitude 81'13.1" Period of record: 198 sampling dates; 1/20/90 to 12/19/08 Surface Area (Shafer et al. 1986): 13788 acres / 5580 hectares Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Central Lakes division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 10 sampling dates: pH 8.6 Total alkalinity (mg/L as CaCO3) 95.5 Conductance (S/cm @ 25 C) 249 Color (Pt-Co units) 16 Chloride (mg/L) 21.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 198 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 15 35 69.7 Long-term total nitrogen concentrations (g/L) 840 1780 2326.7 Long-term total chlorophyll concentrations (g/L) 4 58.4 121.3 Long-term Secchi depth (ft) 0.8 2.1 9.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/14/08 39 1770 33.7 2.7 2/28/08 50 1897 43 2.1 3/26/08 51 2113 39.3 2.5 4/25/08 52 2323 58.3 2.3 6/20/08 37 1873 47.7 1.8 7/11/08 38 1833 41.3 1.5 8/12/08 35 1803 41 2.5 9/26/08 39 1947 48 1.9 10/23/08 46 2163 49.3 2.3 11/17/08 46 1930 48.3 2 12/19/08 38 1875 27.7 2 2008 Average 43 1957 43.4 2.1 92

PAGE 101

Harris East (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'9.6", Longitude 81'9" Period of record: 35 sampling dates; 2/16/06 to 12/19/08 Surface Area .: 13788 acres / 5580 hectares (whole lake area) Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Central Lakes division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 1 sampling date: pH 8.1 Total alkalinity (mg/L as CaCO3) 72.0 Conductance (S/cm @ 25 C) 211 Color (Pt-Co units) 36 Chloride (mg/L) 20.5 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 35 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 25 38 59.3 Long-term total nitrogen concentrations (g/L) 1140 1766 2360 Long-term total chlorophyll concentrations (g/L) 29 57.3 94.3 Long-term Secchi depth (ft) 1.5 2.1 3.3 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/19/08 45 1933 53.1 1.9 2/5/08 37 1787 42.3 2.1 3/20/08 59 1990 60 1.9 4/17/08 52 1787 50.7 1.7 5/16/08 50 2207 73 1.8 6/9/08 39 1863 46.3 1.7 7/10/08 32 1723 48.7 1.6 8/15/08 37 1930 60.3 1.9 9/6/08 38 1770 51.7 1.9 10/17/08 36 1797 48.7 1.9 11/17/08 45 2110 48.3 1.8 12/19/08 30 1757 29 1.9 2008 Average 42 1888 51 1.8 93

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Harris Middle (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'30.6", Longitude 81'42.78" Period of record: 67 sampling dates; 1/23/97 to 12/6/08 Surface Area .: 13788 acres / 5580 hectares (whole lake area) Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Central Lakes division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 1 sampling date: pH 8.5 Total alkalinity (mg/L as CaCO3) 108.0 Conductance (S/cm @ 25 C) 298 Color (Pt-Co units) 36 Chloride (mg/L) 23.8 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 67 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 22 38 55.7 Long-term total nitrogen concentrations (g/L) 1053 1694 2516.7 Long-term total chlorophyll concentrations (g/L) 10.7 58.9 104.7 Long-term Secchi depth (ft) 1.3 2.1 6.1 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/7/08 45 1890 46 1.8 2/9/08 47 1930 45.5 1.9 3/10/08 54 2075 52.3 1.4 4/7/08 49 2060 59.7 1.4 6/13/08 37 1853 59.3 1.4 7/8/08 40 2073 68.3 1.3 8/7/08 27 1707 39.7 1.6 9/14/08 31 1850 50.7 1.4 11/7/08 37 1633 41.3 1.7 12/6/08 39 1723 37 1.8 2008 Average 41 1880 50 1.6 94

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Harris West (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'37.2", Longitude 81'13.8" Period of record: 38 sampling dates; 11/15/05 to 12/19/08 Surface Area .: 13788 acres / 5580 hectares (whole lake area) Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Central Lakes division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 38 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 27 38 54.7 Long-term total nitrogen concentrations (g/L) 1087 1769 2260 Long-term total chlorophyll concentrations (g/L) 21 52.5 101 Long-term Secchi depth (ft) 1.8 2.5 4 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/14/08 48 1937 51 2.8 2/28/08 50 2040 41.7 2.1 3/25/08 53 1953 46.7 2.3 4/25/08 55 2260 56 2 5/14/08 51 2130 76.3 2.1 6/20/08 39 1870 51.3 2.1 7/11/08 32 1800 41 2 8/12/08 34 2000 47.7 2.4 9/26/08 37 1890 56.3 2.1 10/23/08 46 1980 47.7 2.5 11/17/08 45 1887 43 2.1 12/19/08 32 1747 30.3 2.4 2008 Average 44 1958 49.1 2.2 95

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Minneola (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'2.7", Longitude 81'48.09" Period of record: 73 sampling dates; 6/1/90 to 12/16/08 Surface Area (Shafer et al. 1986): 1888 acres / 764 hectares Lake Region (Griffith et al. 1997): Clermont Uplands (75-19) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Groveland Karst division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 9 sampling dates: pH 5.9 Total alkalinity (mg/L as CaCO3) 3.7 Conductance (S/cm @ 25 C) 94 Color (Pt-Co units) 103 Chloride (mg/L) 20.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 73 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 4 26 44.3 Long-term total nitrogen concentrations (g/L) 363 1093 2033.3 Long-term total chlorophyll concentrations (g/L) 1 6 28 Long-term Secchi depth (ft) 1.5 4.4 12.3 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 4/11/08 32 1260 5.3 4.5 6/5/08 27 870 3.7 4.5 7/16/08 28 1070 5.7 4 12/16/08 23 873 6 4.9 2008 Average 27 1018 5.2 4.5 96

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Sellers (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'44.58", Longitude 81'1.86" Period of record: 219 sampling dates; 1/30/90 to 12/16/08 Surface Area (LAKEWATCH): 501 acres / 203 hectares Lake Region (Griffith et al. 1997): Ocala Scrub (75-09) Geologic formation (Brooks 1981): The geology is dominated by sand dunes and well sorted fine sand of the Pleistocene Physiographic region (Brooks 1981): The lake lies in the Ocala Scrub division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 9 sampling dates: pH 4.6 Total alkalinity (mg/L as CaCO3) 0.4 Conductance (S/cm @ 25 C) 52 Color (Pt-Co units) 3 Chloride (mg/L) 9.2 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 219 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 0.0E+01 4 10.3 Long-term total nitrogen concentrations (g/L) 0.0E+01 104 536.7 Long-term total chlorophyll concentrations (g/L) 0.0E+01 1.6 7.7 Long-term Secchi depth (ft) 9 17.8 26 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/24/08 4 180 2.3 16.6 2/28/08 7 150 3.3 12.3 3/21/08 6 183 3 10.6 4/30/08 6 163 1.7 13.5 5/28/08 7 137 2 11 8/29/08 9 217 4.3 9.4 9/26/08 6 167 3 11.8 10/29/08 10 183 3 10.8 11/28/08 8 137 1.7 16.7 12/16/08 6 240 1.7 18.8 2008 Average 7 176 2.6 13.1 97

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Wildcat (Lake County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'35.1", Longitude 81'39.72" Period of record: 117 sampling dates; 11/24/90 to 12/16/08 Surface Area (LAKEWATCH): 351 acres / 142 hectares Lake Region (Griffith et al. 1997): Ocala Scrub (75-09) Geologic formation (Brooks 1981): The geology is dominated by sand dunes and well sorted fine sand of the Pleistocene Physiographic region (Brooks 1981): The Lake lies in the Ocala Scrub division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 10 sampling dates: pH 4.7 Total alkalinity (mg/L as CaCO3) 0.5 Conductance (S/cm @ 25 C) 45 Color (Pt-Co units) 40 Chloride (mg/L) 10.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 117 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 3 7 12.7 Long-term total nitrogen concentrations (g/L) 143 334 610 Long-term total chlorophyll concentrations (g/L) 1 3.9 15.7 Long-term Secchi depth (ft) 2 7.8 16 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 8 333 10.7 7.8 2/28/08 8 323 7.3 8.3 3/20/08 9 287 5 7.4 4/29/08 7 430 3 11.2 5/28/08 6 297 3 10.5 6/19/08 5 307 2.7 13.6 7/30/08 6 287 3.7 10.8 8/29/08 7 383 6.3 7 9/26/08 8 583 3.7 4.7 10/30/08 12 503 4 4.7 11/28/08 8 610 3 2.8 12/16/08 9 610 3.3 4 2008 Average 8 413 4.6 7.7 98

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Jackson (Leon County) LAKEWATCH Water Chemistry Summary Location: Latitude 30'40.32", Longitude 8420'16.44" Period of record: 24 sampling dates; 2/20/02 to 12/2/08 Surface Area (Shafer et al. 1986): 4004 acres / 1620 hectares Lake Region (Griffith et al. 1997): Tifton/Tallahassee Uplands (65-04) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Tallahassee Red Hills subdivision of the State Line Hills division of the Ocala Uplift District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 6.5 Total alkalinity (mg/L as CaCO3) 7.4 Conductance (S/cm @ 25 C) 30 Color (Pt-Co units) 10 Chloride (mg/L) 3.9 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 24 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 14 27 51 Long-term total nitrogen concentrations (g/L) 550 748 1133.3 Long-term total chlorophyll concentrations (g/L) 3 8.8 22 Long-term Secchi depth (ft) 4.3 6.3 8.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 22 603 6.7 8.5 6/17/08 23 617 8 6 9/3/08 51 643 22 4.8 12/2/08 21 675 3.3 7.8 2008 Average 29 635 10 6.8 99

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Mill Dam (Marion County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'48.4", Longitude 81'16.7" Period of record: 81 sampling dates; 1/31/90 to 12/16/08 Surface Area (LAKEWATCH): 310 acres / 125 hectares Lake Region (Griffith et al. 1997): Ocala Scrub (75-09) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Lynne Karst division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 14 sampling dates: pH 6.4 Total alkalinity (mg/L as CaCO3) 2.8 Conductance (S/cm @ 25 C) 72 Color (Pt-Co units) 12 Chloride (mg/L) 10.6 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 81 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 7 12 42.7 Long-term total nitrogen concentrations (g/L) 333 502 763.3 Long-term total chlorophyll concentrations (g/L) 2 4.1 10.7 Long-term Secchi depth (ft) 4.3 8.1 14.7 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/10/08 7 503 2.8 9.3 1/29/08 12 560 4.7 7.8 5/5/08 13 620 2.7 7 10/1/08 10 447 4 10.3 12/16/08 11 490 4.3 7.6 2008 Average 11 524 3.7 8.4 100

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Weir (Marion County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'15.1", Longitude 81'11" Period of record: 163 sampling dates; 3/9/90 to 12/16/08 Surface Area (LAKEWATCH): 7071 acres / 2862 hectares Lake Region (Griffith et al. 1997): Lake Weir/Leesburg Upland (75-14) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Central Lakes division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 9 sampling dates: pH 7.0 Total alkalinity (mg/L as CaCO3) 17.2 Conductance (S/cm @ 25 C) 173 Color (Pt-Co units) 5 Chloride (mg/L) 32.8 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 163 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 6 11 26.3 Long-term total nitrogen concentrations (g/L) 290 753 973.3 Long-term total chlorophyll concentrations (g/L) 3 11.5 22.7 Long-term Secchi depth (ft) 4 6.2 12.2 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 5/5/08 12 887 13.7 4.2 12/16/08 11 847 13.3 5 2008 Average 11 867 13.5 4.6 101

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E (Miami-Dade County) LAKEWATCH Water Chemistry Summary Location: Latitude 25'21.1", Longitude 80'52" Period of record: 71 sampling dates; 6/27/99 to 12/5/08 Surface Area (LAKEWATCH): 98 acres / 37 hectares Lake Region (Griffith et al. 1997): Miami Ridge/Atlantic Coastal Strip (76-03) Geologic formation (Brooks 1981): The geology is dominated by oolite, bioclastic and quartz sand of the Miami Formation Physiographic region (Brooks 1981): The lake lies in the Miami Rock Ridge subdivision of the Southern Atlantic Coastal Strip division of the Gold Coast-Florida Bay District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 8.2 Total alkalinity (mg/L as CaCO3) 96.6 Conductance (S/cm @ 25 C) 361 Color (Pt-Co units) 5 Chloride (mg/L) 45.3 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 71 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 3 5 10.7 Long-term total nitrogen concentrations (g/L) 193 345 730 Long-term total chlorophyll concentrations (g/L) 0.7 1.9 4 Long-term Secchi depth (ft) 11 17.5 23 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/20/08 11 463 2 18 2/24/08 4 400 2 17 3/23/08 5 390 2.3 14.2 4/26/08 4 380 2 14.5 5/25/08 3 353 1.7 19 6/8/08 3 327 2 19.2 7/26/08 6 320 1.3 17 8/16/08 7 193 2 15.2 9/20/08 4 213 2.7 15.5 10/26/08 8 350 3.7 12 11/16/08 7 230 3 13 12/5/08 8 337 2 15 2008 Average 6 330 2.2 15.8 102

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Apopka (Orange County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'11.4", Longitude 81.6'28" Period of record: 3 sampling dates; 11/2/06 to 12/17/08 Surface Area (Shafer et al. 1986): 30671 acres / 12518 hectares Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated undifferentiated sand, shell, clay, marl, and peat of the Holocene and limestone consisting of skeletons of fossils in a silt to sand size matrix of the Ocala Limestone Formation Physiographic region (Brooks 1981): The lake lies in the Central Lakes division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 1 sampling date: pH 9.6 Total alkalinity (mg/L as CaCO3) 86.0 Conductance (S/cm @ 25 C) 328 Color (Pt-Co units) 33 Chloride (mg/L) 44.5 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 3 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 83 106 142 Long-term total nitrogen concentrations (g/L) 3650 3992 4486.7 Long-term total chlorophyll concentrations (g/L) 69.3 97.6 152 Long-term Secchi depth (ft) 0.9 0.9 1 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 9/4/08 142 4487 152 0.9 12/17/08 92 3840 71.3 1 2008 Average 117 4163 111.7 1 103

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Butler (Orange County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'20.88", Longitude 8133'32.04" Period of record: 124 sampling dates; 10/14/93 to 12/5/08 Surface Area (LAKEWATCH): 1904 acres / 771 hectares Lake Region (Griffith et al. 1997): Doctor Phillips Ridge (75-20) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Apopka Hills subdivision of the Apopka Upland division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 9 sampling dates: pH 5.9 Total alkalinity (mg/L as CaCO3) 11.0 Conductance (S/cm @ 25 C) 222 Color (Pt-Co units) 9 Chloride (mg/L) 32.2 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 124 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 5 14 51 Long-term total nitrogen concentrations (g/L) 387 568 1130 Long-term total chlorophyll concentrations (g/L) 0.0E+01 2.8 15.3 Long-term Secchi depth (ft) 4 11.5 23 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/5/08 18 610 2 10 2/20/08 13 540 2 10 4/11/08 13 493 1.3 11.7 5/5/08 15 573 1 11 6/18/08 14 637 2 10 7/11/08 16 607 1 10 8/7/08 13 663 2 10 9/16/08 14 610 2.7 10 11/10/08 13 513 2.3 10 12/5/08 21 460 2 11 2008 Average 15 571 1.8 10.4 104

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Conway North (Orange County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'16.4", Longitude 81'59.5" Period of record: 58 sampling dates; 8/1/92 to 12/2/08 Surface Area (LAKEWATCH): 676 acres / 274 hectares Lake Region (Griffith et al. 1997): Orlando Ridge (75-21) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Orlando Promontory division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 7 sampling dates: pH 7.4 Total alkalinity (mg/L as CaCO3) 25.3 Conductance (S/cm @ 25 C) 237 Color (Pt-Co units) 6 Chloride (mg/L) 33.9 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 58 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 7 10 17 Long-term total nitrogen concentrations (g/L) 327 441 816.7 Long-term total chlorophyll concentrations (g/L) 1 5.8 22.3 Long-term Secchi depth (ft) 3.9 12.6 19.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 8 443 2 19.5 5/20/08 8 420 2 14.4 9/3/08 9 377 3.7 13.3 12/2/08 13 333 2.7 15.8 2008 Average 10 393 2.6 15.8 105

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Conway South (Orange County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'31.4", Longitude 81'47.6" Period of record: 76 sampling dates; 7/27/92 to 12/2/08 Surface Area (LAKEWATCH): 869 acres / 352 hectares Lake Region (Griffith et al. 1997): Orlando Ridge (75-21) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Orlando Promontory division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 8 sampling dates: pH 7.5 Total alkalinity (mg/L as CaCO3) 27.1 Conductance (S/cm @ 25 C) 235 Color (Pt-Co units) 7 Chloride (mg/L) 33.7 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 76 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 7 10 15 Long-term total nitrogen concentrations (g/L) 260 387 773.3 Long-term total chlorophyll concentrations (g/L) 1 4.8 25.3 Long-term Secchi depth (ft) 4.6 13.6 21.8 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 7 343 1.3 21.8 5/20/08 8 357 2 18 9/3/08 9 270 2.7 13 12/2/08 11 393 2 18.7 2008 Average 9 341 2 17.9 106

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Ivanhoe East (Orange County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'48.9", Longitude 81'30.84" Period of record: 143 sampling dates; 3/24/92 to 11/5/08 Surface Area (LAKEWATCH): 109 acres / 44 hectares Lake Region (Griffith et al. 1997): Orlando Ridge (75-21) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Orlando Promontory division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 7 sampling dates: pH 8.2 Total alkalinity (mg/L as CaCO3) 60.9 Conductance (S/cm @ 25 C) 208 Color (Pt-Co units) 11 Chloride (mg/L) 17.7 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 143 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 10 27 166.7 Long-term total nitrogen concentrations (g/L) 397 738 1360 Long-term total chlorophyll concentrations (g/L) 3 28.1 88.7 Long-term Secchi depth (ft) 1.3 3.7 13.3 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 15 510 4 12.8 5/20/08 10 397 4 10.5 9/3/08 24 623 20.3 4.7 11/5/08 32 690 29 4 2008 Average 20 555 14.3 8 107

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Ivanhoe Middle (Orange County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'43.62", Longitude 8122'50.4" Period of record: 148 sampling dates; 4/20/92 to 11/5/08 Surface Area (LAKEWATCH): 69 acres / 28 hectares Lake Region (Griffith et al. 1997): Orlando Ridge (75-21) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Orlando Promontory division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 6 sampling dates: pH 7.9 Total alkalinity (mg/L as CaCO3) 60.3 Conductance (S/cm @ 25 C) 203 Color (Pt-Co units) 11 Chloride (mg/L) 17.1 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 148 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 7 28 48.3 Long-term total nitrogen concentrations (g/L) 400 640 1260 Long-term total chlorophyll concentrations (g/L) 3 24.8 55.7 Long-term Secchi depth (ft) 1.9 4.5 14 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 26 497 12.7 8.3 5/20/08 16 543 12.7 7.5 9/3/08 28 623 27.3 5 11/5/08 35 643 24.3 4.3 2008 Average 26 577 19.2 6.3 108

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Ivanhoe West (Orange County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'54.48", Longitude 8122'58.98" Period of record: 132 sampling dates; 4/5/93 to 11/5/08 Surface Area (LAKEWATCH): 70 acres / 28 hectares Lake Region (Griffith et al. 1997): Orlando Ridge (75-21) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Orlando Promontory division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 6 sampling dates: pH 8.1 Total alkalinity (mg/L as CaCO3) 58.3 Conductance (S/cm @ 25 C) 205 Color (Pt-Co units) 11 Chloride (mg/L) 18.3 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 132 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 9 31 74.3 Long-term total nitrogen concentrations (g/L) 287 633 1040 Long-term total chlorophyll concentrations (g/L) 3 28.5 59.7 Long-term Secchi depth (ft) 1.7 4.2 16.8 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 19 470 6 12.4 5/20/08 15 490 6 12.7 9/3/08 31 670 25.3 4 11/5/08 28 730 31.3 4.6 2008 Average 23 590 17.2 8.4 109

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Johns (Orange County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'7.02", Longitude 81'26.28" Period of record: 150 sampling dates; 10/29/89 to 11/7/08 Surface Area (LAKEWATCH): 3862 acres / 1563 hectares Lake Region (Griffith et al. 1997): Apopka Upland (75-16) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Gap subdivision of the Lake Wales Ridge division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 10 sampling dates: pH 6.8 Total alkalinity (mg/L as CaCO3) 23.0 Conductance (S/cm @ 25 C) 218 Color (Pt-Co units) 46 Chloride (mg/L) 30.7 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 150 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 12 42 79.2 Long-term total nitrogen concentrations (g/L) 720 1074 1768.3 Long-term total chlorophyll concentrations (g/L) 2 14.7 79.2 Long-term Secchi depth (ft) 1.2 3.9 6.8 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 4 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/10/08 37 1038 18.2 3.8 3/2/08 37 947 7.7 4.7 5/5/08 52 1230 17.5 2.8 6/6/08 54 1180 19 2.5 8/9/08 55 1070 28.8 2.6 9/27/08 71 1022 16.8 2.6 11/7/08 69 952 16.5 2.6 2008 Average 54 1063 17.8 3.1 110

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Starke (Orange County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'26.96", Longitude 8132'13.52" Period of record: 141 sampling dates; 7/30/92 to 12/2/08 Surface Area (LAKEWATCH): 328 acres / 133 hectares Lake Region (Griffith et al. 1997): Apopka Upland (75-16) Geologic formation (Brooks 1981): The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Apopka Hills subdivision of the Apopka Upland division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 1 sampling date: pH 7.7 Total alkalinity (mg/L as CaCO3) 45.0 Conductance (S/cm @ 25 C) 249 Color (Pt-Co units) 16 Chloride (mg/L) 32.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 141 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 13 26 51 Long-term total nitrogen concentrations (g/L) 553 997 1520 Long-term total chlorophyll concentrations (g/L) 6.3 24 71.7 Long-term Secchi depth (ft) 2 3.3 7 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/15/08 19 760 12.9 4.3 2/13/08 22 783 12 4.5 3/11/08 18 580 11 5.2 4/9/08 16 580 9 6.4 5/15/08 16 667 9.3 5.1 6/10/08 14 553 9.3 4.3 7/15/08 13 723 8.7 12/2/08 23 750 11.7 7 2008 Average 17 675 10.5 5.3 111

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Alligator (Osceola County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'49.8", Longitude 81'55.8" Period of record: 164 sampling dates; 6/19/90 to 8/4/08 Surface Area (LAKEWATCH): 3501 acres / 1417 hectares Lake Region (Griffith et al. 1997): Osceola Slope (75-27) Geologic formation (Brooks 1981): The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Kissimmee Valley division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 5.8 Total alkalinity (mg/L as CaCO3) 1.9 Conductance (S/cm @ 25 C) 115 Color (Pt-Co units) 43 Chloride (mg/L) 24.1 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 164 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 6 14 26.2 Long-term total nitrogen concentrations (g/L) 396 638 1182 Long-term total chlorophyll concentrations (g/L) 1 3.9 12.8 Long-term Secchi depth (ft) 2.6 5.4 10 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 5 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 12 588 2.6 4.6 5/14/08 590 . 5/28/08 12 608 3.6 7.6 8/4/08 12 400 2.7 7.1 2008 Average 12 546 3 6.4 112

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Kissimmee (Osceola County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'36.3", Longitude 81'58.62" Period of record: 55 sampling dates; 4/12/95 to 9/12/08 Surface Area (LAKEWATCH): 48945 acres / 19808 hectares Lake Region (Griffith et al. 1997): Kissimmee/Okeechobee Lowland (75-35) Geologic formation (Brooks 1981): The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Kissimmee Valley division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 6 sampling dates: pH 7.7 Total alkalinity (mg/L as CaCO3) 24.0 Conductance (S/cm @ 25 C) 135 Color (Pt-Co units) 65 Chloride (mg/L) 17.1 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 55 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 27 53 99.7 Long-term total nitrogen concentrations (g/L) 907 1305 2050 Long-term total chlorophyll concentrations (g/L) 6 33.2 75.7 Long-term Secchi depth (ft) 1.5 2.7 4.8 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 9/12/08 61 1417 46 3 2008 Average 61 1417 46 3 113

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Tohopekaliga-Middle (Osceola County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'14.64", Longitude 8123'40.68" Period of record: 37 sampling dates; 6/13/00 to 10/3/08 Surface Area (LAKEWATCH): 18,810 acre / 7612 hectare (whole lake area) Lake Region (Griffith et al. 1997): Kissimmee/Okeechobee Lowland (75-35) Geologic formation (Brooks 1981): The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Kissimmee Valley division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 37 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 23 49 86 Long-term total nitrogen concentrations (g/L) 750 1146 1570 Long-term total chlorophyll concentrations (g/L) 9.3 25.5 57 Long-term Secchi depth (ft) 1.8 3 4.7 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 28 973 14.3 4.3 5/14/08 34 1197 37 3.7 10/3/08 36 930 26 4.2 2008 Average 33 1033 25.8 4 114

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Tohopekaliga-North (Osceola County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'51.36", Longitude 8124'2.76" Period of record: 47 sampling dates; 6/13/00 to 10/3/08 Surface Area (LAKEWATCH): 18,810 acre / 7612 hectare (whole lake area) Lake Region (Griffith et al. 1997): Kissimmee/Okeechobee Lowland (75-35) Geologic formation (Brooks 1981): The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Kissimmee Valley division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 47 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 32 65 136.3 Long-term total nitrogen concentrations (g/L) 680 1114 2163.3 Long-term total chlorophyll concentrations (g/L) 6.3 29.8 102.3 Long-term Secchi depth (ft) 1.4 2.8 7.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/16/08 47 950 10.3 3.7 10/3/08 44 947 24.3 3.7 2008 Average 45 948 17.3 3.7 115

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Tohopekaliga-South (Osceola County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'44.94", Longitude 8121'28.38" Period of record: 23 sampling dates; 6/13/00 to 10/3/08 Surface Area (LAKEWATCH): 18,810 acre / 7612 hectare (whole lake area) Lake Region (Griffith et al. 1997): Kissimmee/Okeechobee Lowland (75-35) Geologic formation (Brooks 1981): The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Kissimmee Valley division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 23 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 23 44 82.5 Long-term total nitrogen concentrations (g/L) 780 1232 1986.7 Long-term total chlorophyll concentrations (g/L) 6.3 29.4 50.3 Long-term Secchi depth (ft) 1.8 3.1 5.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 28 1063 14.7 5.5 5/14/08 48 1347 38 3.3 10/3/08 37 1110 36 3.7 8/4/08 27 1087 43.7 2 2008 Average 27 1087 43.7 2 116

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Tohopekaliga East (Osceola County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'33", Longitude 81'8.4" Period of record: 92 sampling dates; 12/17/97 to 11/21/08 Surface Area (LAKEWATCH): 13691 acres / 5541 hectares Lake Region (Griffith et al. 1997): Osceola Slope (75-27) Geologic formation (Brooks 1981): The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Kissimmee Valley division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 11 sampling dates: pH 6.5 Total alkalinity (mg/L as CaCO3) 13.5 Conductance (S/cm @ 25 C) 120 Color (Pt-Co units) 39 Chloride (mg/L) 21.6 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 92 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 11 21 32 Long-term total nitrogen concentrations (g/L) 487 671 1053.3 Long-term total chlorophyll concentrations (g/L) 1.3 5.3 16 Long-term Secchi depth (ft) 3.3 5.9 11.8 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 8/5/08 16 537 5 5.9 10/3/08 26 690 11.3 4 11/21/08 21 660 5 4.5 2008 Average 21 629 7.1 4.8 117

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Dexter (Polk County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'26.34", Longitude 8140'56.1" Period of record: 157 sampling dates; 12/21/92 to 11/30/08 Surface Area (LAKEWATCH): 173 acres / 70 hectares Lake Region (Griffith et al. 1997): Winter Haven/Lake Henry Ridges (75-31) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Winter Haven Karst division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 4 sampling dates: pH 7.8 Total alkalinity (mg/L as CaCO3) 33.0 Conductance (S/cm @ 25 C) 218 Color (Pt-Co units) 9 Chloride (mg/L) 18.8 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 157 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 5 10 24.3 Long-term total nitrogen concentrations (g/L) 293 442 770 Long-term total chlorophyll concentrations (g/L) 1 2.8 10 Long-term Secchi depth (ft) 7.7 12.9 19.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/29/08 14 450 3 3/31/08 15 387 3.3 4/30/08 14 427 2 5/31/08 9 483 2.7 6/30/08 10 343 2.3 7/31/08 11 487 3.3 10 8/31/08 14 330 . 9/30/08 12 353 3.3 10/31/08 12 333 3 12.5 11/30/08 11 3 2008 Average 12 399 2.9 11.2 118

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Eloise (Polk County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'4.26", Longitude 81'18" Period of record: 15 sampling dates; 10/29/91 to 12/15/08 Surface Area (Shafer et al. 1986): 1160 acres / 469 hectares Lake Region (Griffith et al. 1997): Winter Haven/Lake Henry Ridges (75-31) Geologic formation (Brooks 1981): The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation Physiographic region (Brooks 1981): The lake lies in the Winter Haven Karst division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 1 sampling date: pH 8.2 Total alkalinity (mg/L as CaCO3) 65.0 Conductance (S/cm @ 25 C) 287 Color (Pt-Co units) 16 Chloride (mg/L) 34.4 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 15 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 23 36 53.3 Long-term total nitrogen concentrations (g/L) 1050 1301 1533.3 Long-term total chlorophyll concentrations (g/L) 21 43.3 73 Long-term Secchi depth (ft) 1.8 2.7 3.6 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 3/12/08 44 1387 49 2.3 5/7/08 42 1457 47 2 8/6/08 23 1050 21 3.6 12/15/08 34 32.3 3.5 2008 Average 36 1298 37.3 2.9 119

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Weohyakapka (Polk County) LAKEWATCH Water Chemistry Summary Location: Latitude 27'55.62", Longitude 8125'49.8" Period of record: 128 sampling dates; 10/26/92 to 9/12/08 Surface Area (LAKEWATCH): 7325 acres / 2964 hectares Lake Region (Griffith et al. 1997): Kissimmee/Okeechobee Lowland (75-35) Geologic formation (Brooks 1981): The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene Physiographic region (Brooks 1981): The lake lies in the Kissimmee Valley division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 7.0 Total alkalinity (mg/L as CaCO3) 12.0 Conductance (S/cm @ 25 C) 110 Color (Pt-Co units) 33 Chloride (mg/L) 16.7 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 128 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 11 23 52.3 Long-term total nitrogen concentrations (g/L) 407 714 1160 Long-term total chlorophyll concentrations (g/L) 1 11.1 47 Long-term Secchi depth (ft) 2 4.8 8 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/5/08 33 893 16.3 2.9 5/7/08 50 1160 2.4 9/12/08 36 1037 28.3 3.3 2008 Average 40 1030 22.3 2.9 120

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Crescent (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'38.8", Longitude 81'36.2" Period of record: 1 sampling date; 9/19/08 Surface Area (Shafer et al. 1986): 15960 acres / 6514 hectares Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene Physiographic region (Brooks 1981): The lake lies in the Crescent Lake Basin subdivision of the Palatka Anomalies division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 4 sampling dates: pH 6.8 Total alkalinity (mg/L as CaCO3) 17.7 Conductance (S/cm @ 25 C) 214 Color (Pt-Co units) 322 Chloride (mg/L) 50.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 1 month sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 142 142 142 Long-term total nitrogen concentrations (g/L) . Long-term total chlorophyll concentrations (g/L) . Long-term Secchi depth (ft) . 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 9/19/08 142 . 2008 Average 142 . 121

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Crescent North (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'6.3", Longitude 81'57.3" Period of record: 16 sampling dates; 3/23/07 to 9/19/08 Surface Area (Shafer et al. 1986): 15960 acres / 6514 hectares Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene Physiographic region (Brooks 1981): The lake lies in the Crescent Lake Basin subdivision of the Palatka Anomalies division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 1 sampling date: pH 7.7 Total alkalinity (mg/L as CaCO3) 55.0 Conductance (S/cm @ 25 C) 808 Color (Pt-Co units) 43 Chloride (mg/L) 204.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 16 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 50 70 128 Long-term total nitrogen concentrations (g/L) 970 1350 1706.7 Long-term total chlorophyll concentrations (g/L) 15 42.5 103 Long-term Secchi depth (ft) 1.7 2.7 3.9 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/28/08 57 1387 34.7 3.9 3/2/08 52 1270 24.7 3.8 4/19/08 65 1433 38.7 2.6 5/17/08 77 1530 58 2.2 6/23/08 60 1707 20 3.3 8/30/08 50 1133 31.7 2.8 9/19/08 128 1663 15 1.7 2008 Average 70 1446 31.8 2.9 122

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Crescent South (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'38.8", Longitude 81'36.2" Period of record: 20 sampling dates; 3/14/07 to 12/18/08 Surface Area (Shafer et al. 1986): 15960 acres / 6514 hectares Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene Physiographic region (Brooks 1981): The lake lies in the Crescent Lake Basin subdivision of the Palatka Anomalies division of the Eastern Flatwoods District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 2 sampling dates: pH 7.9 Total alkalinity (mg/L as CaCO3) 65.0 Conductance (S/cm @ 25 C) 893 Color (Pt-Co units) 51 Chloride (mg/L) 219.8 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 20 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 58 102 221.3 Long-term total nitrogen concentrations (g/L) 940 1638 2460 Long-term total chlorophyll concentrations (g/L) 4.3 54.6 159.7 Long-term Secchi depth (ft) 0.6 1.6 2.8 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/14/08 85 1570 60 1.4 2/19/08 58 1473 29.7 1.9 3/18/08 73 1773 53.3 1.5 4/18/08 77 1433 49 1.7 5/22/08 88 1730 80.7 1.8 6/20/08 105 1867 42.7 1.8 7/23/08 64 1227 38.7 2 9/26/08 221 2460 4.3 0.6 11/24/08 81 1953 11.3 0.9 12/18/08 . 7.7 1 2008 Average 95 1721 37.7 1.5 123

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Rodman-1 (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'23.4", Longitude 81'26.4" Period of record: 97 sampling dates; 1/25/00 to 12/17/08 Surface Area (Shafer et al. 1986): 13,000 acre / 5261 hectare (whole lake area) Geologic formation (Brooks 1981): Physiographic region (Brooks 1981): Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 97 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 4 30 112 Long-term total nitrogen concentrations (g/L) 170 663 1710 Long-term total chlorophyll concentrations (g/L) 1 8 72 Long-term Secchi depth (ft) 1.5 6.1 13.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 40 750 . 2/15/08 37 960 3 8.5 3/26/08 57 1120 23 3 4/24/08 70 1470 72 3.5 5/15/08 53 1150 33 3.5 6/25/08 24 500 9 6 7/24/08 24 590 15 7 8/18/08 18 750 13 6 9/18/08 56 1200 5 2 10/15/08 37 890 2 3 11/16/08 30 680 4 6 12/17/08 21 520 11 10 2008 Average 39 882 17.3 5.3 124

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Rodman-2 (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'33.0", Longitude 81'14.4" Period of record: 96 sampling dates; 1/25/00 to 12/17/08 Surface Area (Shafer et al. 1986): 13,000 acre / 5261 hectare (whole lake area) Geologic formation (Brooks 1981): Physiographic region (Brooks 1981): Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 96 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 5 32 135 Long-term total nitrogen concentrations (g/L) 230 658 1630 Long-term total chlorophyll concentrations (g/L) 1 8.3 51 Long-term Secchi depth (ft) 1.5 5.6 13 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 30 690 4 2/15/08 26 620 4 5 3/26/08 68 1120 18 3 4/24/08 66 1530 51 3.5 5/15/08 56 1170 37 3.5 6/25/08 24 440 9 6 7/24/08 24 760 13 7 8/18/08 22 740 15 6 9/18/08 59 1210 4 2 10/15/08 36 790 2 3 11/16/08 32 780 10 5 12/17/08 24 540 13 7 2008 Average 39 866 15 4.6 125

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Rodman-3 (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'27.0", Longitude 81'9.0" Period of record: 108 sampling dates; 1/25/00 to 12/14/08 Surface Area (Shafer et al. 1986): 13,000 acre / 5261 hectare (whole lake area) Geologic formation (Brooks 1981): Physiographic region (Brooks 1981): Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 108 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 8 28 97 Long-term total nitrogen concentrations (g/L) 150 549 1480 Long-term total chlorophyll concentrations (g/L) 0.3 2.8 24 Long-term Secchi depth (ft) 1.5 4.6 11 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/13/08 28 460 2 2/17/08 27 590 2 3/16/08 42 860 1 2 4/13/08 48 660 11 4 5/18/08 27 440 3 5.5 6/15/08 47 620 6 2.5 7/13/08 25 750 4 3 8/17/08 38 920 6 2.5 9/14/08 35 950 3 1.5 10/12/08 20 980 1 3 11/16/08 14 740 1 9.5 12/14/08 14 440 1 3 2008 Average 30 701 3.4 3.6 126

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Rodman-4 (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'9.6", Longitude 81'27.6" Period of record: 91 sampling dates; 1/25/00 to 12/16/08 Surface Area (Shafer et al. 1986): 13,000 acre / 5261 hectare (whole lake area) Geologic formation (Brooks 1981): Physiographic region (Brooks 1981): Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 91 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 5 35 166 Long-term total nitrogen concentrations (g/L) 200 690 2260 Long-term total chlorophyll concentrations (g/L) 0.0E+01 5.7 39 Long-term Secchi depth (ft) 1.5 5.9 12 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/12/08 46 1240 11 3/25/08 63 1020 35 5 4/13/08 96 1430 39 3 5/20/08 48 690 19 7 6/15/08 24 410 8 6 7/9/08 21 560 6 8 8/28/08 48 1360 2 4 9/12/08 59 1240 1 6 10/21/08 27 790 10 5 12/16/08 24 710 2 2008 Average 46 945 13.3 5.5 127

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Rodman-5 (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'5.7", Longitude 81'0.3" Period of record: 91 sampling dates; 1/25/00 to 12/16/08 Surface Area (Shafer et al. 1986): 13,000 acre / 5261 hectare (whole lake area) Geologic formation (Brooks 1981): Physiographic region (Brooks 1981): Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 91 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 9 37 142 Long-term total nitrogen concentrations (g/L) 300 746 1730 Long-term total chlorophyll concentrations (g/L) 0.0E+01 2.6 20 Long-term Secchi depth (ft) 1.5 7.2 17 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/20/08 54 1020 3 5 2/19/08 43 1180 2 4.3 3/25/08 49 910 4 7 4/13/08 87 1050 2 3 5/20/08 30 700 4 11 6/15/08 27 470 4 10.5 7/9/08 28 580 3 12 8/28/08 39 1260 0.0E+01 4 9/12/08 43 1130 1 5 10/21/08 31 1040 1 9 12/16/08 30 830 1 2008 Average 42 925 2.3 7.1 128

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Rodman-6 (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'27.6", Longitude 81'16.2" Period of record: 108 sampling dates; 1/25/00 to 12/16/08 Surface Area (Shafer et al. 1986): 13,000 acre / 5261 hectare (whole lake area) Geologic formation (Brooks 1981): Physiographic region (Brooks 1981): Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 108 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 18 45 148 Long-term total nitrogen concentrations (g/L) 530 1073 2430 Long-term total chlorophyll concentrations (g/L) 0.5 7.8 57 Long-term Secchi depth (ft) 1 5.2 9 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/14/08 52 1580 7 4 2/15/08 47 1460 4 3/17/08 41 1190 3 4.5 4/13/08 49 770 8 4 5/19/08 39 1070 33 4.5 6/16/08 29 740 13 7.5 7/15/08 28 940 13 6 8/17/08 37 1120 3 8 9/15/08 58 1360 1 2.5 10/14/08 42 1000 1 4.5 11/18/08 43 1330 1 9 12/16/08 39 1060 2 2008 Average 42 1135 7.7 5.3 129

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Rodman-out 1 (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'32.4", Longitude 81'49.2" Period of record: 108 sampling dates; 1/25/00 to 12/14/08 Surface Area (Shafer et al. 1986): 13,000 acre / 5261 hectare (whole lake area) Geologic formation (Brooks 1981): Physiographic region (Brooks 1981): Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 108 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 6 34 122 Long-term total nitrogen concentrations (g/L) 250 733 1860 Long-term total chlorophyll concentrations (g/L) 1 8.3 68 Long-term Secchi depth (ft) 1 5.5 14 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/13/08 38 830 8 5.5 2/17/08 32 1420 7 5 3/16/08 53 1110 52 2 4/13/08 96 1610 68 2 5/18/08 58 1180 36 3 6/15/08 28 710 25 3.5 7/13/08 27 850 15 4.5 8/17/08 23 730 19 4.3 9/14/08 58 1290 1 1.5 10/12/08 35 1020 4 3 11/16/08 33 720 7 5.5 12/14/08 22 500 7 7 2008 Average 42 998 20.8 3.9 130

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Rodman-out 2 (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'30.0", Longitude 81'57.6" Period of record: 98 sampling dates; 1/25/00 to 12/17/08 Surface Area (Shafer et al. 1986): 13,000 acre / 5261 hectare (whole lake area) Geologic formation (Brooks 1981): Physiographic region (Brooks 1981): Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 98 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 5 31 128 Long-term total nitrogen concentrations (g/L) 130 680 1860 Long-term total chlorophyll concentrations (g/L) 1 9.5 65 Long-term Secchi depth (ft) 1.5 5.8 14.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 31 630 6 2/15/08 37 830 5 3/26/08 65 1860 11 5.5 4/24/08 76 1510 65 3.5 5/15/08 52 1060 34 3.5 6/25/08 25 540 10 6 7/24/08 22 700 15 7.5 8/18/08 20 660 11 7 9/18/08 63 1260 5 2 10/15/08 33 770 1 3 11/16/08 33 990 7 6.5 12/17/08 23 550 13 9 2008 Average 40 947 16.2 5.3 131

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Rodman-out 3 (Putnam County) LAKEWATCH Water Chemistry Summary Location: Latitude 29'30.0", Longitude 81'58.2" Period of record: 74 sampling dates; 5/17/01 to 12/16/08 Surface Area (Shafer et al. 1986): 13,000 acre / 5261 hectare (whole lake area) Geologic formation (Brooks 1981): Physiographic region (Brooks 1981): Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from sampling dates: pH Total alkalinity (mg/L as CaCO3) Conductance (S/cm @ 25 C) Color (Pt-Co units) Chloride (mg/L) Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 74 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 9 96 341 Long-term total nitrogen concentrations (g/L) 170 1014 2490 Long-term total chlorophyll concentrations (g/L) 0.0E+01 3 17 Long-term Secchi depth (ft) 0.5 2.8 6 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 1 mid-lake station for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/23/08 102 1480 11 1.5 2/19/08 107 860 11 3/25/08 196 1720 17 4/13/08 256 1950 3 1.5 5/20/08 58 410 6 5 6/15/08 43 440 14 5.5 7/9/08 37 750 11 5 8/28/08 44 1260 2 3 9/12/08 47 1200 5 3 10/21/08 24 740 3 3 12/16/08 35 570 1 3.5 2008 Average 86 1035 7.6 3.4 132

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Jesup (Seminole County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'4.5", Longitude 81'8.82" Period of record: 87 sampling dates; 4/25/91 to 12/21/08 Surface Area (Shafer et al. 1986): 10011 acres / 4051 hectares Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation Physiographic region (Brooks 1981): The lake lies in the St Johns Offset division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 5 sampling dates: pH 7.9 Total alkalinity (mg/L as CaCO3) 73.8 Conductance (S/cm @ 25 C) 729 Color (Pt-Co units) 54 Chloride (mg/L) 177.5 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 87 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 90 166 339.3 Long-term total nitrogen concentrations (g/L) 1320 3106 6623.3 Long-term total chlorophyll concentrations (g/L) 36.5 146.2 405 Long-term Secchi depth (ft) 0.5 1.2 2.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 2/2/08 142 4360 260.3 0.5 3/15/08 189 5970 342.3 0.5 4/12/08 192 6623 405 0.5 5/15/08 145 5473 246 0.5 6/15/08 131 3797 137 0.8 7/13/08 127 3660 115 0.8 10/11/08 133 1800 52 1.5 12/21/08 136 2327 93.3 1 2008 Average 149 4251 206.4 0.8 133

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Jesup North (Seminole County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'48.42", Longitude 8110'44.04" Period of record: 91 sampling dates; 2/17/01 to 12/20/08 Surface Area : 10011 acres / 4051 hectares (whole lake area) Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation Physiographic region (Brooks 1981): The lake lies in the St Johns Offset division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 1 sampling date: pH 8.8 Total alkalinity (mg/L as CaCO3) 102.0 Conductance (S/cm @ 25 C) 1890 Color (Pt-Co units) 52 Chloride (mg/L) 515.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 91 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 79 146 253.3 Long-term total nitrogen concentrations (g/L) 1020 2721 7203.3 Long-term total chlorophyll concentrations (g/L) 27.3 120 296.3 Long-term Secchi depth (ft) 0.5 1.2 2.2 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/13/08 164 4997 295 0.7 2/17/08 176 5540 236.7 0.5 3/16/08 169 4020 205.7 0.8 4/15/08 90 2430 60 1.4 5/18/08 107 3447 110.3 0.9 6/14/08 137 3907 154.3 0.8 7/13/08 122 3727 108.3 0.8 8/17/08 112 2917 160 1 9/13/08 184 1680 58 1.7 10/22/08 161 1517 54.3 1.8 11/17/08 136 1607 81.3 1.7 12/20/08 121 2087 101 1.4 2008 Average 140 3156 135.4 1.1 134

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Monroe East (Seminole County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'55.86", Longitude 8114'11.94" Period of record: 17 sampling dates; 9/25/00 to 3/14/08 Surface Area .: acre / hectare Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation Physiographic region (Brooks 1981): The lake lies in the St Johns Offset division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 1 sampling date: pH 8.0 Total alkalinity (mg/L as CaCO3) 44.0 Conductance (S/cm @ 25 C) 1687 Color (Pt-Co units) 35 Chloride (mg/L) 434.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 17 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 47 104 248 Long-term total nitrogen concentrations (g/L) 1347 1729 2093.3 Long-term total chlorophyll concentrations (g/L) 5.3 25.4 60.3 Long-term Secchi depth (ft) 1.4 1.8 2.5 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 3/14/08 66 1597 29.7 2.5 2008 Average 66 1597 29.7 2.5 135

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Monroe West (Seminole County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'31.92", Longitude 8117'46.56" Period of record: 46 sampling dates; 9/24/00 to 8/14/08 Surface Area .: acre / hectare Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10) Geologic formation (Brooks 1981): The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation Physiographic region (Brooks 1981): The lake lies in the St Johns Offset division of the Central Lake District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 2 sampling dates: pH 7.4 Total alkalinity (mg/L as CaCO3) 41.5 Conductance (S/cm @ 25 C) 1552 Color (Pt-Co units) 35 Chloride (mg/L) 402.0 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 46 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 30 79 221.3 Long-term total nitrogen concentrations (g/L) 837 1509 3276.7 Long-term total chlorophyll concentrations (g/L) 0.0E+01 13 72.7 Long-term Secchi depth (ft) 0.8 2 4 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 3/14/08 59 1533 18.3 2.6 8/14/08 70 1417 27 2.6 2008 Average 64 1475 22.7 2.6 136

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Panasoffkee (Sumter County) LAKEWATCH Water Chemistry Summary Location: Latitude 28'56.82", Longitude 827'6.6" Period of record: 104 sampling dates; 8/5/88 to 10/1/08 Surface Area (Shafer et al. 1986): 4460 acres / 1805 hectares Lake Region (Griffith et al. 1997): Central Valley (75-08) Geologic formation (Brooks 1981): The geology is dominated undifferentiated sand, shell, clay, marl, and peat of the Holocene and limestone consisting of skeletons of fossils in a silt to sand size matrix of the Ocala Limestone Formation Physiographic region (Brooks 1981): The lake lies in the Tsala Apopka Basin division of the Ocala Uplift District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 6 sampling dates: pH 8.2 Total alkalinity (mg/L as CaCO3) 102.9 Conductance (S/cm @ 25 C) 259 Color (Pt-Co units) 51 Chloride (mg/L) 10.5 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 104 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 10 32 125.3 Long-term total nitrogen concentrations (g/L) 333 810 2060 Long-term total chlorophyll concentrations (g/L) 2 14 139.7 Long-term Secchi depth (ft) 2 3.9 8 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 5/28/08 27 1083 10.3 5 10/1/08 76 2060 51.3 2.3 2008 Average 52 1572 30.8 3.7 137

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Juniper East (Walton County) LAKEWATCH Water Chemistry Summary Location: Latitude 30'43.14", Longitude 867'36" Period of record: 107 sampling dates; 4/19/97 to 12/8/08 Surface Area (Shafer et al. 1986): 670 acre / 271 hectare (whole lake area) Lake Region (Griffith et al. 1997): Dougherty/Marianna Plains (65-02) Geologic formation (Brooks 1981): The geology is dominated by gravel, sand and clay of the Citronelle Formation Physiographic region (Brooks 1981): The lake lies in the De Funiak Karst division of the Dougherty Karst District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 3 sampling dates: pH 5.4 Total alkalinity (mg/L as CaCO3) 0.2 Conductance (S/cm @ 25 C) 19 Color (Pt-Co units) 25 Chloride (mg/L) 5.3 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 107 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 4 11 24.7 Long-term total nitrogen concentrations (g/L) 157 401 1100 Long-term total chlorophyll concentrations (g/L) 1 5.6 16 Long-term Secchi depth (ft) 3.6 7.3 12 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 7/29/08 17 820 16 4.9 10/29/08 17 1100 6 6.6 11/20/08 19 937 4.7 4.6 12/8/08 . 4 3.6 2008 Average 18 952 7.7 5 138

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Juniper West (Walton County) LAKEWATCH Water Chemistry Summary Location: Latitude 30'28.5", Longitude 86'19.62" Period of record: 93 sampling dates; 4/19/97 to 12/8/08 Surface Area (Shafer et al. 1986): 670 acre / 271 hectare (whole lake area) Lake Region (Griffith et al. 1997): Dougherty/Marianna Plains (65-02) Geologic formation (Brooks 1981): The geology is dominated by gravel, sand and clay of the Citronelle Formation Physiographic region (Brooks 1981): The lake lies in the De Funiak Karst division of the Dougherty Karst District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 4 sampling dates: pH 5.1 Total alkalinity (mg/L as CaCO3) 1.2 Conductance (S/cm @ 25 C) 22 Color (Pt-Co units) 28 Chloride (mg/L) 5.3 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 93 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 5 11 18.3 Long-term total nitrogen concentrations (g/L) 247 628 1303.3 Long-term total chlorophyll concentrations (g/L) 1.3 6 19.3 Long-term Secchi depth (ft) 3.3 6.5 9 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 7/30/08 14 750 15.3 4.9 10/29/08 14 1003 5 6.5 11/20/08 16 950 4 4.8 12/8/08 . 3 3.3 2008 Average 15 901 6.8 4.9 139

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Spring (Walton County) LAKEWATCH Water Chemistry Summary Location: Latitude 30'51", Longitude 86'39" Period of record: 195 sampling dates; 2/2/90 to 10/30/08 Surface Area (LAKEWATCH): 242 acres / 98 hectares Lake Region (Griffith et al. 1997): Dougherty/Marianna Plains (65-02) Geologic formation (Brooks 1981): The geology is dominated by silty fine sand to sandy clay of the Shoal River Formation Physiographic region (Brooks 1981): The lake lies in the De Funiak Karst division of the Dougherty Karst District Supplemental, unpublished water chemistry data, University of Florida. Data reported are means from 4 sampling dates: pH 6.0 Total alkalinity (mg/L as CaCO3) 1.4 Conductance (S/cm @ 25 C) 18 Color (Pt-Co units) 11 Chloride (mg/L) 4.9 Long-term Florida LAKEWATCH Data Numbers reported below are the minimum, average and maximum value for the 195 months sampled: Minimum Average Maximum Long-term total phosphorus concentrations (g/L) 6 14 35.7 Long-term total nitrogen concentrations (g/L) 240 518 1150 Long-term total chlorophyll concentrations (g/L) 1 9.1 84.3 Long-term Secchi depth (ft) 1.8 7.4 12.3 2008 Florida LAKEWATCH Data Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, g/L), total nitrogen (TN, g/L), chlorophyll (CHL, g/L) and Secchi depth (SECCHI, ft) during 2008: Date TP ( g/L) TN ( g/L) CHL ( g/L) SECCHI (ft) 1/4/08 12 510 7.7 7 2/8/08 8 457 3.7 12.1 4/23/08 10 407 2.7 9.3 5/26/08 11 477 3 8.5 6/26/08 11 427 3.3 8/18/08 9 447 5.3 8.3 9/22/08 9 407 3 9 9/24/08 8 597 3 10 10/30/08 16 677 1 10 2008 Average 11 489 3.6 9.3 140

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Appendix D: Lake and watershed area maps of 32 lakes in the long-term monitoring program 141

PAGE 150

Alachua County Lochloosa 142

PAGE 151

Alachua County Newnan 143

PAGE 152

Alachua County Orange 144

PAGE 153

Alachua County Santa Fe 145

PAGE 154

Alachua County Wauberg 146

PAGE 155

Highlands County Istokpoga 147

PAGE 156

Highlands County Josephine 148

PAGE 157

Highlands County June 149

PAGE 158

Hillsborough County Wilson 150

PAGE 159

Indian River County Stick Marsh 151

PAGE 160

Lake County Cherry 152

PAGE 161

Lake County Dorr 153

PAGE 162

Lake County Grasshopper 154

PAGE 163

Lake County Sellers 155

PAGE 164

Lake County Wildcat 156

PAGE 165

Marion County Mill Dam 157

PAGE 166

Marion County Weir 158

PAGE 167

Miami-Dade County E 159

PAGE 168

Orange County Butler 160

PAGE 169

Orange County Conway 161

PAGE 170

Orange County Ivanhoe 162

PAGE 171

Orange County Johns 163

PAGE 172

Orange County Starke 164

PAGE 173

Osceola County Alligator 165

PAGE 174

Osceola County Kissimmee 166

PAGE 175

Osceola County Tohopekaliga 167

PAGE 176

Osceola County Tohopekaliga East 168

PAGE 177

Polk County Dexter 169

PAGE 178

Polk County Weohyakapka 170

PAGE 179

Sumter County Panasoffkee 171

PAGE 180

Walton County Juniper 172

PAGE 181

Walton County Spring 173

PAGE 182

Appendix E: Florida LAKEWATCH procedures for measuring aquatic vegetation Percent Area Covered and Percent Volume Infested Florida LAKEWATCH conducts aquatic plant surveys on all of the lake in the long-term monitoring project every other year. A major component of these surveys is collecting data on submerged vegetation to acquire measures of the Percent Area Covered (PAC) and the Percent Volume Infested (PVI) with submerged aquatic vegetation. The following is a step-by-step outline of how LAKEWATCH PAC and PVI data is currently collected and analyzed. This procedure is modified from those of Jim Griffin of the University of South Florida (personal communication, unpublished data). Boat setup: Three items are needed: 1. Lowrance LCX-28cHD head unit 2. Transducer 3. GPS receiver The Lowrance system works best when the transducer is permanently mounted to the boat, however, data can be obtained using removable mounting hardware. A standard deep cycle or cranking battery is needed for power. Read and understand owners manual completely Field procedures: Turn on power and allow GPS to acquire position (check using STATUS page). Once at location, start transect by using the PAGES button to get to SONAR and chose FULL SONAR CHART. Use the MENU button and chose LOG SONAR DATA. Name the transect appropriately and select the drive for saving the map (hard drive or removable memory card). Push ENTER on START LOGGING to begin transect. Push PAGES and go to MAP and chose the MAP WITH SONAR screen (this allows you to see your position on the map, speed, and the sonar chart simultaneously). Constant speed is not necessary for all applications since GPS coordinates are being taken, however, keeping the speed around 10mph is recommended from previous experiences. Keeping a constant speed is necessary for Lakewatch procedures as GIS is not used to map transects after they are recorded. As you approach the end of the transect return to the SONAR page and use the MENU button to again access the LOG SONAR DATA screen. Once at the end of the transect press ENTER while highlighting END LOGGING (it will be in the same area as the START LOGGING prompt was earlier). Repeat these steps for every transect needed. Office procedures: 174

PAGE 183

A LEI/MMC card reader is needed to retrieve data from the removable memory card. The program Sonar Viewer is needed to view bottom maps on a computer. This program is a free download from: http://www.lowrance.com/Downloads/SLV/sonar_viewer.asp Once the transect files are moved from the Lowrance unit to the computer via the memory card, save each transect or group of transects in folders with water body name and date, as this information is not part of the data saved in the files. To access the maps, open Sonar Viewer from the desktop or the computers main menu. Opening these files by double clicking on the file name in my documents will not allow use of all needed options. Once a file is open in Sonar Viewer: 1. Go to FILE and click on OUTPUT CHART INFORMATION. This will open up a SAVE AS window. 2. Name the chart differently if desired and save. This has saved the file as a comma delimited file (.CSV) in Microsoft Excel. It is a spread sheet of the numerical data for the opened chart. 3. Repeat these steps for all transect files per sampling event. The newly formed Excel spread sheet contains all of the data recorded by the Lowrance (depth, water temp., position, etc.). Much of the data is not needed for PAC/PVI determination; however, the data should be kept for possible future analysis. Desired data can be copied and pasted into another worksheet in the Excel file to be more easily viewed (when this is done the file must be resaved as a .XLS file as .CSV files cannot have more than one worksheet). A column called Depth Valid is part of the data shown on the spreadsheet. The cells will contain either a T or an F. T means everything was working properly, a depth was taken, and the bottom chart will be clear and usable. An F means that no depth was taken and the chart is most likely unclear in this section. Therefore, any rows with an F in the Depth Valid cell should not be used and can be deleted. Two new columns must be added to the far left of the spread sheet. Transect number which will be the same in every cell in each file and Sounding number which will start with 0 and go through the number of data points for each transect (the number of rows in the file) (Figure 1). Once Transect and Sounding numbers have been added to all transect files from a sampling event the data from each individual transect should be copied and placed in order of transect into a new file called lakename_ALL. This file will now contain data for the full sampling event organized in order by transect and sounding number. A new column called Random should be added to the right of the spread sheet. A random number formula should be used to assign a random number to each sounding. Using the formula =rand() in Excel will generate a random number between 0 and 1. Copy and paste this formula down the entire column. Copy the entire Random column and paste it back in the same place using the Paste Special Values operation. This prevents the formula from continuously regenerating the random number each time you work on the spread sheet. 175

PAGE 184

Highlight the entire worksheet and Sort by Random in ascending order. Select the appropriate number of soundings to be analyzed for PAC/PVI. Common methods are to use a set number of soundings (ex. 100) for each water body, or a percentage of the total number of soundings (ex. 0.1%). The percentage should be low as this system generates thousands of data points (ex. Talquin reservoir, FL = 86,000 data points from 5 transects at 10mph constant speed). Once these rows are selected, copy and paste them into another worksheet. Sort these rows in ascending order first by transect number then by sounding number. These are the points from each transect chart that will be visually measured to determine PAC/PVI. Add two new columns Bottom depth and Veg depth. Veg depth is the depth of the top of the plants, so if no plants are present the veg depth value will be the same as the Bottom depth. If plants are to the surface, topped out, than Veg depth will equal 0. In Sonar Viewer chart settings must be set the same to aid in standardization of this method: 1. Set Colorline = 60 2. Set Sensitivity = 70 3. Go to View in the upper menu and open Chart Settings 4. Set Surface Clarity = High 5. Set ASP = Normal 6. View chart as color with white background (default) Open Sonar Viewer and Excel simultaneously. For each transect place the mouse pointer on the designated sounding on the chart in Sonar Viewer and record the bottom depth (figure 2) and plant height (figure 3) in Excel. Repeat for all points. Add column Veg height and Veg presence. Veg height can be determined with (Bottom depth Veg depth). Veg presence is binomial with 0 meaning no plants (Veg height = 0) and 1 meaning plants (Veg height >0) (Figure 4). PAC is determined using the formula ( Veg presence/ Total number of soundings analyzed)100] (figure 5). PVI is determined using the formula [( Veg height/ Bottom depth)100] (figure 5). 176

PAGE 185

177Figure 1: Transect number and Sounding number columns added to raw Lowrance transect data prior to combining individual files into a lake ALL file. Figure 2: Bottom depth is determined by placing the cursor at the change between the large yellow line and the beginning of the darker colored plants (black arrow). The information box shows the cursor depth. This value should be entered into the Excel spreadsheet.

PAGE 186

178Figure 3: Veg depth is determined by placing the cursor at the top of the yellow/orange colored plants on the chart (black arrow). The information box shows the cursor depth. This value should be entered into the Excel spreadsheet. Figure 4: Veg height and Veg presence columns added to spreadsheet after Bottom and Veg depths are measured.

PAGE 187

Figure 5: PVI and PAC values which are determined using the data from the above columns. 179


Long-term fish, plants, and water quality monitoring program.
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Publication Date: 2008
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Full Text


UWF UNIVERSITY of
UF IFLORIDA
Institute of Food and Agricultural Sciences
School of Forest Resources and Conservation


Long-Tenn Fish, Plants, and Water Quality Monitoring Program:


2008 Data


Florida LAKEWATCH, Program in Fisheries and Aquatic Sciences in Cooperation with
Florida Fish and Wildlife Conservation Commission


AFO"









Acknowledgments


This program is funded by Florida Fish and Wildlife Conservation Commission
(FFWCC). We thank all FFWCC, Florida LAKEWATCH, Fisheries and Aquatic
Sciences personnel, and citizen volunteers who assisted in the collection of data for this
program.










Table of Contents
PAGE
A ck n o w le d g m en ts .................................................................................................................


T ab le o f C o n ten ts ............................................................................... ii


Intro du action ........................................................ ......... 1


Methods
Florida LAKEWA TCH Fish Sampling Procedures................................... ................ 2
Florida LAKEWA TCH Aquatic Plant Sampling Procedures....................................... 4
Florida LAKEWA TCH Water Sampling Field and Laboratory Procedures ............. 5
Florida Fish and Wildlife Conservation Commission Lake and Watershed area
mapping Procedures .. ............................................... .... .... 6

Deliverables
Contract Deliverable 1: 2008 Electrofishing data................................................. 7
Contract Deliverable 2. 2008 Aquatic Plant Sampling data............................. 7
Contract Deliverable 3: 2008 Water Quality Sampling data .............. ......... 8


Table 1. List of Florida LAKEWATCH and FFWCC long-term fish monitoring lakes...... 9
Table 2. Latitude and Longitudes for all electrofishing sampling transects in long term
monitoring project lakes sampled in 2008 ......... ........................................ .............. 11


Literature Cited ... ...................................................... ..... .......... 14









Appendix A Electrofishing data for all lakes sampled by Florida LAKEWATCH
personnel during 2008 ................ ......... ....... ........ 16
County Lake
A lachua.. ............. ......... ................ .. W auberg ...................... .................... 17
H highlands ................ ...... .. .......... ... i ..Josephine.. ........ ............... .... .... 18
H highlands .............................................June ........................ ........ 19
H illsborough ..................................... W ilson ......................... ...... .... ......... 20
L ake .......... .... .... .......... ...... ............... G rasshopper .................. ........ ........ 2 1
Lake ............ ..................................... Sellers .... ..... .......... ......... 22
Lake ......... .. ............................... .... W ildcat ........... ...... ........ 23
Leon ..................................................... Jackson ........... ...... ........ 24
M arion ........ ........... ...... .......... M ill Dam ............. ........ ........ 25
M arion .................................................W eir .................................... 26
M iami-Dade ................... ...................E.................. ................ 27
Orange ...............................................Butler .......... ...... ..................... 28
Orange ......... ................................. Conway ................ 29
O range ..................................................Ivanhoe ......................... ........ 30
Orange ............... ..........Johns .............. ............... ........ 31
O range ................................................ Starke ............. .......... ........ 32
O sceola ................................................ T ohopekaliga E ast....... .... ..................... 33
Polk ........... ...................................... Dexter.... ............... ......... 34
W alton ........................... ......... ...... Juniper........................................... ......... 35
W alton ................................................ Spring ............. . ......... ........ 36









Appendix B Long-term monitoring project plant survey results for lakes sampled
during 2008 ... .................................. ........................ ...... ........ 37
County Lake
Alachua ................. ............... ........ Wauberg ..................... .... 38
B radford ............ ..... ......... ......... Sam pson .. ............ ........ ...... .. ....... 39
H highlands ........................................... June ................. .. ... ..... ........ 40
Lake .................................................... Cherry ........... .............. ......... 41
L ake ............... ...... ........ ......... D orr ........................................... 42
L ake ............................... ............. .... G griffin ....... ..................... . ...... 43
Lake ............... .... ...... .... ..... H arris .................................. ............ ......... 45
Lake ................................. Minneola ................................................. 46
Lake ................................ ................... W wildcat ........................................... ........ 47
M arion ..... ........ ........... .......... .........M ill D am ...................... .......... . ....... 48
M arion .............. ....... .........................W eir ................................. .. ..... 4 9
Miami-Dade ........................... .........E .................. ......... 50
Orange ............................................. Apopka ............. . ........ ........ 51
O sceola ............................... ...............Tohopekaliga E ast....... ............... ........ 53
Pinellas ................................................. T arpon .. ..... ................... ......... 55
Polk ................... .......... ..... Eloise ..... .... ........... ......... 56
Putnam .................. ..... .......... Crescent.............................. ... 57
Putnam ................................ .............. G eorge ............. . ......... ........ 59
Sem inole ........................ .................M onroe ........................ 61
W alton ........................... ......... ...... Juniper............................................ ......... 62
W alton ............................... .............. Spring ......................... ............ 64









Appendix C Water chemistry data for all lakes sampled in 2008 as part of the long term
m monitoring program ..................... .... .................................................... .. .. ........ .. ....... 65
County Lake
A lachua...... .. .... ..... ... ............ .. L ochloosa .................... ............ ........ 66
Alachua .......................... .................. Newnan ..................... ............. 67
Alachua ............... ......... ................ Orange .......... ..... .................... 68
Alachua................. .... ........ ...Santa Fe............... ............ ........ 69
A lachua............................ ...............W auberg ......... .................... ........ 70
Bay ...................................................... D eer Point ................. ........ 71
B radford ...................... ................... Sam pson .......................... ...... ...... 72
Brevard ..................... Poinsett ................................ 73
C ollier ............................... ............... T afford ......................... 74
Gadsden .......................................... Talquin ................ ..... ........ 75
Gulf ........ ....... ........... ............... Dead Lakes........... ........ ........ 76
Highlands ............... ................. Istokpoga ...................... ........ 77
H highlands ............................................. Josephine........................................ ......... 79
H ighlan d s .............................................Ju n e ....................................... 82
Hillsborough ............... ... ...............Wilson ................... ......... 83
Indian R iver..................... .......... Farm 13 .................................. ...... 84
Indian R iver ............. ...... ..... Stick M arsh ............................ 85
L ak e .................... ......... .... .......... ..... C h erry ........................ 86
L ake ................................. ............... D orr ................................................ ......... 87
Lake ........................ Grasshopper ........................ 88
Lake ............... ................. Griffin ............................................ ......... 89
Lake ............... ...... ... ...............Harris ..... ... ............ ......... 92
Lake ........... .............. ............. ... M inneola ........................................ ......... 96
Lake ................................. ................ Sellers .... ..... .......... ......... 97
Lake ................................. ............... W ildcat ........... ...... ........ 98
Leon............................ ............ Jackson ......... .. .. .. ........ ........ 99
M arion ..... .. .... ... .. ...... ..........M ill D am ....................... .......... ...... 100
M arion ................. .................................W eir ............................. 10 1
M iam i-D ade ........................ ................E ............................. .......... ....... 102
Orange ............................................. Apopka ............. ........ .............. 103
O range ..................................................B utler .......... ...... ...................... 104
O range ..... .. .. ........................ ....... C onw ay ............................ ........ . ... 105
O range ...... .. ........ ...........Ivanhoe .................................. 107
O range ........................... .......... Johns .......................................... .... ....... 110
O range ........ ..... .... .. ................ Starke ............... .. .... .................. 111









O sceola ................................... ...... ..... A lligator ........................ .......... . .... 112
O sceola .................................. K issim m ee ............................... ........ 113
O sceola ..............................................Tohopekaliga..................... .... .. ........ 114
O sceola ............................................... Tohopekaliga East........... ........... 117
Polk ............... ............................... D exter ......... ..... ..... ........ 118
Polk .................................. ............... Eloise .......... ...... ...................... 119
P olk............ .......... ... ............. W eohyakapka.............. ....... ............... 120
P utnam .......... .. .......... .................. .C recent ........................... ...... . ....... .. 12 1
Putnam ....... ..... .. ....... .. .............R odm an ...................... ........ .. ....... ... 124
Sem inole ............... .. .... ........... Jesup ............................... ........... 133
Sem inole ........ .. ...... ........ ......... M onroe .. ............ ........ ...... .. ......... .. 135
Sum ter .... ..... ..... .. ..... ... ...... ...........Panasoffkee .................... .... .. ......... .. 137
W alton ........................... ..... ..........Juniper .......................................... ........... 138
W alton ................................................ Spring ............. . ........ ......... 140









Appendix D Lake and watershed area maps of 32 lakes in the long-term monitoring
program ................................................ ........... 141
County Lake
A lachua.. ............. ......... ................ .. L ochloosa .................................. ........... 142
A lachua ................................................N ew nan .... .................... ...... .. ........ .. 143
A lachua......... ...... ....... .............. ... O range ......... .. ............................. 144
A lachua..................... ....... .... .. Santa Fe.......................... .... ........ .. ......... 145
A lachu a.................................... ............ W auberg .................. .............. . ......... 146
H highlands ................... ....... .........Istokpoga............... ............ .. .......... .. 147
H highlands ...................... .. ..... ....in... Josephine.......... ............ .. .. ....... 148
Highlands ................... .......... June ....................................... ........ 149
H illsborough ......................... ... .. ..W ilson ..................................... ...... 150
Indian River .............. .... ........... Stick M arsh ............................... 151
Lake ...............................................Cherry .................................. 152
L ake ........................................ ... ..... D orr ............................................. ........... 153
L ake ....................... ................. ..... G rasshopper ........................... ...... 154
Lake .............................................. Sellers .......... ...... ........... 155
Lake ....................................... .. ....... .... W ildcat ........... ...... ......... 156
M arion ....... ............ ................. .. M ill D am .................... .......... ....... 157
M arion .... . .......... ........... ....................W eir ........................................... 158
M iami-Dade ................... ................ E ................................ ... . ........ 159
O range ...................... ......................... B utler ........... ............... .......... 160
O range ....... ......... .... .. ........ Conw ay ........................ .... .. ......... .. 161
O range ...............................................Ivanhoe ......................... .... .......... 162
O range .............. ....... .................... Johns .............................. ...................... 163
O range ................ ............................... Starke ........................................... .......... 164
O sceola ................................................ Alligator .......... ..... ........... 165
O sceola ................................................ K issim m ee ............................. . ...... ... 166
O sceola ... ........................................ Tohopekaliga.................... ..... ............. 167
O sceola ............................................... Tohopekaliga East........... ........... 168
Polk .................. ............... Dexter.... ............ ........... 169
P olk ........ .... .......................... ... .... . .W eohyakapka.......... .. ........ ...... ........ 170
Sum ter ....................................... .........Panasoffkee ................ ........ ........... 171
W alton ........................... ............. .. Juniper .......................................... ........... 172
W alton ................................................ Spring ........................ ............. 173


Appendix E: Florida LAKEWATCH procedures for measuring aquatic vegetation
Percent Area Covered and Percent Volume Infested.................................... ................ 174









Florida LAKEWATCH Long-term Fish Monitoring Program


Introduction

Florida LAKEWATCH is a volunteer citizen's lake monitoring program. Citizens from
throughout Florida are trained by staff from the University of Florida's Department of
Fisheries and Aquatic Sciences to conduct long-term scientific lake monitoring programs.
Special attention is given to the monitoring of water quality and the distribution of
scientifically sound lake management information. Florida LAKEWATCH also provides
citizens with educational material regarding their lakes and provides a vehicle by which
concerned citizens can work with professionals in government to foster a better
understanding of Florida lakes.


The Florida LAKEWATCH program is extremely successful and to date, over 1000 lakes
from 50 Florida Counties have been part of the LAKEWATCH program. Currently
Florida LAKEWATCH is maintaining approximately 600 active lakes in the program
with over 800 active citizen volunteers. One major concern of the citizens involved with
LAKEWATCH is the health of the fish populations in their lakes. To help get more
information on fish and long-term trends in fish populations Florida LAKEWATCH
began cooperating with the Florida Fish and Wildlife Conservation Commission
(FFWCC) in the collection of fish data on 32 water bodies. These lakes have all been in
the Florida LAKEWATCH program for the duration of sampling, yielding good
background information on water chemistry and aquatic plants in these lakes. In 2006
FFWCC and Florida LAKEWATCH expanded this cooperative sampling to cover 52
lakes statewide. The list of lakes now in the monitoring program, along with each
group's responsibilities for sampling are listed in Table 1.


The fish populations in 32 lakes have been sampled with electrofishing in the springs of
1999 through 2007, although some lakes were missed due to low water in the spring of
2000 and 2001. Florida LAKEWATCH's staff is currently analyzing the long-term
electrofishing data to identify trends in indexes of fish communities over the last ten









years. In the fall of 2007 Florida LAKEWATCH shifted community sampling from
spring to fall to coincide with the FFWCC sampling schedule. This shift allowed better
pooling and comparison of electrofishing data in the future.


Lakes selected for the long-term fish sampling program cover most of Florida (Table 1),
thereby spreading the work load to different regional personnel of both Florida
LAKEWATCH and FFWCC. The lakes were also selected to cover a wide range of lake
trophic states and aquatic macrophyte abundances as these are major factors impacting
fish populations in lakes. The goals of this project are three fold: 1) to examine the long-
term variation in fish communities from a range of lakes in relation to: water chemistry,
lake trophic status, aquatic macrophyte abundances, and lake morphology, 2) educate
citizens in the functioning of Florida fish populations and 3) facilitate the interaction and
cooperation among Florida citizens, the Program in Fisheries and Aquatic Sciences,
University of Florida/Institute of Food and Agricultural Sciences, and Florida Fish and
Wildlife Conservation Commission.





Methods


Florida LAKEWA TCH Fish Sampling Procedures:


Electrofishing samples were collected in the fall (September-December) of 2008. One
hundred and twenty electrofishing samples were taken on 20 of the lakes listed in Table
1. Six transects (10 minutes each) were collected at fixed stations spaced uniformly
around each lake. The latitude and longitude of these transects were marked with Global
Positioning System units (GPS) (Table 2) to insure constant sampling locations though
time. Electrofishing was conducted with one dipper, along the shore with the pedal down
constantly for 10 minutes.


All fish were collected and placed in an aerated tank. At the end of each transect all fish









were measured to max total length (TL) and released. Largemouth bass, black crappie,
and all sunfish species were measured to the nearest mm. All other fishes were grouped
by species into 2-cm size groups. For each species, the total number of fish for each size
group was recorded for each individual transect. Other data collected from each transect
included time of day, approximate depth and percent composition of each prominent
macrophyte species along each transect (estimated visually).


Only fish length was measured on all of the fish collected during this study. This was
done to minimize the amount of time needed to work up fish and expedite live releases.
However, to examine weights in relation to other Florida Lakes, weights were calculated
using length/weight regressions from unpublished data (Bill Schaeffer, Florida Fish and
Wildlife Conservation Commission).


Nine fish community measures were calculated for each sampling event (Catch per unit
effort for numbers and weights, percent composition of total numbers and weight, species
richness, diversity (three different measures), and evenness). Species richness was
measured as the number of individual species caught per lake per sampling event. Three
different forms of the Simpson's Diversity Index were calculated. The Simpson's Index
(D) is the probability of picking two organisms at random that are different species and is
calculated as follows:

D = p (1)

where D = Simpson's index
p, = Proportion of species i in the community


The Simpson's Index of Diversity (1-D) is the probability of picking two organisms at
random that are the same species. Simpson's index of diversity is calculated as follows:
1-D= 1 (pi)2 (2)

where (1-D) = Simpson's index of diversity
p, = Proportion of individuals of species i in the community









1
Lastly, the Simpson's Reciprocal Index (-) is the number of equally common species
D
required the generate the observed heterogeneity of the sample and is calculated as
follows:
1 1
1 2 (3)
D A>

1
where = Simpson's reciprocal index
D
p, = Proportion of species i in the community


These methods give more weight to commonly sampled, and often more desired, species
(Krebs 1999). Each of these equations are widely accepted and commonly used, and
were therefore all included. Species evenness is a measure of the relative abundance of
the different species making up the richness of a sample and was given by:

El D D (4)
s

where E1/D= Simpson's measure of evenness

D = Simpson's index (equation 1)
s = Number of species in sample


This evenness calculation gives values that range from 0 to 1 with greater evenness
having values closer to 1 (Krebs 1999).


Florida LAKEWA TCH Aquatic Plant Sampling Procedures:


Aquatic macrophyte surveys were conducted on 21 of the lakes listed in Table 1 during
the summer (May September) of 2008. Only partial plant sampling was completed on
lake Monroe (Seminole County) due to high water from tropical storm "Fay". The above-
ground standing crop of emergent, floating-leaved, and submerged vegetation was
measured along uniformly placed transects (9 to 30, depending on the size of the water
body) around the water body. At each transect divers cut the above-ground portions of









aquatic macrophytes that were inside a 0.25m2 plastic square randomly thrown once in
each plant zone. The vegetation was placed in nylon mesh bags, spun to remove excess
water, and weighed to the nearest 0.1 kg. Average standing crop (kg wet weight/m2) for
each vegetation zone was calculated by averaging samples from each transect. The
combined width (m) of the floating-leaved and emergent zones was estimated at each
transect and then averaged for each water body. All plant species seen while sampling
were listed according to the frequency that they occurred in evenly spaced transects
around the water body.


The percent volume infested with aquatic macrophytes (PVI) and the percent area
covered with aquatic macrophytes (PAC) were determined according to modified
methods ofMaceina and Shireman (1980). The methods were modified because of
advancing technologies. PAC and PVI in deeper, open water portions of the lakes were
measured using sonar bottom transect images recorded with a Lowrance LCX 28c HD
sonar and GPS system. Random samples from all data points on each water body were
taken and measured for lake depth and plant height, if plants were present. These data
were used in conjunction with the littoral zone measurements to acquire estimates of
whole lake PAC and PVI. Appendix E shows the current Florida LAKEWATCH
working method for measuring PAC and PVI. This method is unpublished and modified
from the methodology developed by Jim Griffin of the University of South Florida
(personal communication, unpublished data).


Florida LAKEWA TCH Water Sampling Field and Laboratory Procedures:


On sampling dates throughout the year, citizen volunteers, UF staff, or FFWCC staff
collected surface water samples from one to six mid-water locations (depending upon
water body size) on 47 lakes from Table 1 (Canfield 1991). Water samples for nutrients
(total phosphorus and total nitrogen) were collected at each sampling station in 250-ml,
acid-cleaned, triple-rinsed Nalgene bottles provided by the Program in Fisheries and
Aquatic Sciences. Water clarity at each sampling location was measured with a Secchi
disc and additional surface water samples were collected at each location in 4-L, tap-









water rinsed, plastic jugs. To estimate the concentration of plankton algae at each
sampling station, a measured volume of water from the 4-L jugs was collected and
filtered through a Gelman Type A-E glass fiber filter. Filters were then stored over silica
gel desiccant and frozen.


Water samples and the glass fiber filters were stored frozen at the homes of the citizen
volunteers, at one of thirty-four collection centers located across the state, or at FFWCC
facilities for one to four months. All frozen samples along with Secchi disc information
was delivered to the Department of Fisheries and Aquatic Science's water quality
laboratory where the water samples and filters were analyzed for total phosphorus, total
nitrogen and chlorophyll concentrations.


At the laboratory, total phosphorus concentrations ([g/L) were determined using the
procedures of Murphy and Riley (1962) with a persulfate digestion (Menzel and Corwin
1965). Total nitrogen concentrations ([g/L) were determined by oxidizing water samples
with persulfate and determining nitrate-nitrogen with second derivative spectroscopy
(D'Elia et al. 1977; Simal et al. 1985; Wollin 1987). A total nitrogen equivalency study
of nitrogen in surface waters demonstrated that this method is a suitable substitute for the
standard USEPA method involving the sum of nitrate-nitrogen and Kj eldahl-nitrogen as
measured with an automated analyzer (Sylvia S. Labie, Administrator Florida
Department of Environmental Regulation Quality Assurance Section, 1991). Chlorophyll
concentrations ([g/L) were determined spectrophotometrically (Method 10200 H; APHA
1989) following pigment extraction with ethanol (Sartory and Grobbelaar 1984).


Florida Fish and Wildlife Conservation Commission Lake and Watershed Mapping
Procedures:


Lake and watershed area maps of 32 of the lakes from Table 1 were created for future
analysis of effects of watershed use on plant and fish communities. These maps were
generated by Brian Beneke of the Florida Fish and Wildlife Conservation Commission
(Appendix D). All of these maps were created using GIS analysis conducted in raster









format using Arc Hydro Tools, version 1.1, beta 2 and the Spatial Analyst extension of
the ArcMap software package (ESRI, Version 9.2, 2003). The pixel size used for the
analysis was 10 x 10 m, with the extent of the analysis from Fort Walton County to South
Miami-Dade (approximately 2/3 of the State of Florida). Source data used in the analysis
of watersheds was a 10-meter resolution digital elevation model (DEM) generated by the
US Geological Survey.


ArcHydro was used to perform Terrain Proprocessing on the DEM. This included Fill
Sinks, Flow Direction, Flow Accumulation, Stream Definition, and Stream Segmentation.
The watershed tool in the Hydrology tool set was used to complete the watershed. The
32 watersheds in raster formats were converted to vector formats and used to create the
individual maps of each watershed (Brian Beneke, Florida Fish and Wildlife
Conservation Commission, personal communication).




Deliverables


Contract Deliverable 1: 2008 Electrofishing data (pages 16-36):


One hundred and twenty electrofishing events were conducted on 20 of lakes in 11
counties by Florida LAKEWATCH personnel during the fall of 2008. GPS coordinates
for all transects sampled are provided in Table 2. Results for each lake sampled are
shown in Appendix A. Catch per unit effort (CPUE) data is provided for both numbers
(number/hour) and weights (grams/hour) of fish caught as well as percent composition of
total numbers and weight by species. Species richness, diversity (three indices), and
evenness measures are shown for each sampling event. A CD with the raw data is
attached to the end of this section.


Contract Deliverable 2: 2008 Aquatic Plant Sampling data (pages 37-64):









Aquatic plant communities were sampled from 21 lakes in 13 counties by Florida
LAKEWATCH personnel during the summer of 2008. Results for each lake sampled are
shown in Appendix B. Percent area covered (PAC), percent volume infested (PVI),
biomass (emergent, floating, and submerged plants), littoral zone width, and average
depth are presented for each lake as well as the common and scientific name and
frequency of occurrence of each aquatic plant species present.


Contract Deliverable 3: 2008 Water Quality Sampling data (pages 65-140):


Water chemistry from 47 lakes in 21 counties was sampled by volunteers, Florida
LAKEWATCH, and FFWCC personnel throughout 2008. Results for each lake sampled
are shown in Appendix C. Physical characteristics and sampling history of each lake are
provided. Long-term average and 2008 values for total phosphorus (TP, tgg/L), total
nitrogen (TN, tgg/L), chlorophyll (CHL, tgg/L), and secchi depth for each sampling
occasion are listed.









Table 1. List of sampling responsibilities for Florida LAKEWATCH (LW) and Florida
Fish and Wildlife Conservation Commission (FFWCC) long-term fish monitoring lakes.
Water samples being taken by the local Water Management District offices (District) are
noted.


siF h Sampler


Water Sampler


Alachua Lochloosa FFWCC LW LW
Alachua Newnan FFWCC LW LW
Alachua Orange FFWCC LW LW
Alachua Santa Fe FFWCC LW LW
Alachua Wauberg LW LW LW
Bay Deerpoint FFWCC LW LW
Bradford Sampson FFWCC LW LW
Brevard Poinsett FFWCC LW LW
Broward Cons. Area 3 FFWCC LW LW
Collier Trafford FFWCC LW LW
Gadsden Talquin FFWCC LW LW
Gulf Dead Lakes FFWCC LW LW
Highlands Istokpoga FFWCC LW LW
Highlands Josephine FFWCC LW LW
Highlands June LW LW LW
Hillsborough Wilson LW LW LW
Indian River Stick Marsh FFWCC LW LW
Lake Apopka FFWCC District LW
Lake Cherry FFWCC LW LW
Lake Dorr FFWCC LW LW
Lake Grasshopper LW LW LW
Lake Griffin FFWCC LW LW
Lake Harris FFWCC LW LW
Lake Minneola FFWCC LW LW
Lake Sellers LW LW LW
Lake Wildcat LW LW LW
Leon Jackson FFWCC LW LW
Marion Mill Dam FFWCC LW LW
Marion Weir LW LW LW
Miami-Dade E LW LW LW
Orange Butler LW LW LW
Orange Conway LW LW LW
Orange Ivanhoe LW LW LW
Orange Johns FFWCC LW LW
Orange Starke LW LW LW
Osceola Alligator FFWCC LW LW
Osceola Kissimmee FFWCC LW LW
Osceola Tohopekaliga FFWCC LW LW
Osceola Toho East LW LW LW


County


Lake


alP nt Sampler









Table 1: Continued.
Palm Beach Okeechobee FFWCC District LW
Pinellas Tarpon FFWCC LW LW
Polk Dexter LW LW LW
Polk Eloise FFWCC LW LW
Polk Weohyakapka FFWCC LW LW
Putnam Crescent FFWCC LW LW
Putnam George FFWCC LW LW
Putnam Rodman FFWCC LW LW
Seminole Jesup FFWCC LW LW
Seminole Monroe FFWCC LW LW
Sumter Panasoffkee FFWCC LW LW
Walton Juniper LW LW LW
Walton Spring LW LW LW










Table 2: Latitude and Longitudes for all transects sampled in long term monitoring
project lakes during 2008. Sections with a (.) are locations were coordinates were not
taken.


Start


Lake Tran
Wauberg 1
2
3
4
5
6


Latitude
29 31.760
29 31.438
29 31.491
29 31.804
29 32.120
29 32.035


Stop


Longitude Latitude
82 17.923 29 31.584


17.971
18.301
18.423
18.204
17.965


29
29
29
29
29


31.439
31.624
31.994
32.191
31.852


Longitude
82 17.879
82 18.166
82 18.374
82 18.331
82 18.082
82 17.892


Highlands Josephine 1 27 24.172 81 26.841 27 23.995 81 26.81
2 27 24.141 81 27.502 27 24.325 81 27.605
3 27 23.874 81 26.556 27 23.710 81 26.399
4 27 23.636 81 26.715 27 23.481 81 26.633
5 27 24.014 81 26.008
6 27 23.909 81 25.138 27 23.687 81 25.083
Highlands June 1 27 18.834 81 22.381 27 18.840 81 22.237
2 27 18.756 81 22.848 27 18.708 81 23.056
3 27 18.150 81 23.451 27 17.912 81 23.399
4 27 17.550 81 24.863 27 17.711 81 24.970
5 27 18.535 81 25.039 27 18.742 81 24.995
6 27 19.246 81 24.526 27 19.327 81 24.277
Hillsborough Wilson 1 28 8.655 82 29.091 28 8.699 82 29.290
2 28 8.699 82 29.290 28 8.825 82 29.335
3 28 8.853 82 29.332 28 8.986 82 29.277
4 28 8.983 82 29.275 28 9.034 82 29.174
5 28 8.988 82 29.133 28 8.826 82 29.135
6 28 8.797 82 29.122 28 8.674 82 29.069
Lake Grasshopper 1 29 8.086 81 37.184 29 7.956 81 37.007
2 29 7.970 81 36.955 29 8.084 81 36.889
3 29 8.152 81 36.812 29 8.301 81 36.725
4 29 8.464 81 36.600 29 8.594 81 36.684
5 29 8.601 81 36.810 29 8.404 81 36.739
6 29 8.378 81 36.806 29 8.198 81 36.904
Lake Sellers 1 29 6.620 81 37.894 29 6.546 81 38.072
2 29 6.562 81 38.275 29 6.494 81 38.502
3 29 6.503 81 38.858 29 6.664 81 38.774
4 29 6.880 81 38.572 29 6.976 81 38.477
5 29 7.115 81 38.480 29 6.997 81 38.262
6 29 7.025 81 37.770 29 6.831 81 37.797


Wildcat


10.218
10.034
9.285
9.461
9.918
10.014


37.589
38.093
37.615
37.491
37.523
37.561


10.134
9.906
9.220
9.604
9.930
10.019


37.848
38.059
37.437
37.656
37.506
37.717


County
Alachua


Lake










Table 2: Continued.


Lake Trans
Jackson 1
2
3
4
5
6


Start
Latitude Longitude
30 31.469 84 21.148
30 31.799 84 20.461
30 32.445 84 19.773
30 31.454 84 19.303
30 30.447 84 18.749
30 30.863 84 17.991


Latitude
30 31.645
30 31.642
30 32.600
30 31.317
30 30.357
30 30.799


tI
Longitude
84 21.219
84 20.307
84 19.886
84 19.212
84 18.746
84 17.839


Marion Mill Dam 1 29 10.736 81 50.036 29 10.922 81 49.987
2 29 10.922 81 49.988 29 11.088 81 50.086
3 29 11.085 81 50.085 29 11.141 81 50.205
4 29 11.159 81 50.310 29 11.060 81 50.476
5 29 10.996 81 50.553 29 10.780 81 50.549
6 29 10.724 81 50.465 29 10.635 81 50.327
Marion Weir 1 29 1.669 81 54.838 29 1.475 81 54.751
2 29 0.664 81 55.039 29 0.442 81 55.164
3 28 59.595 81 55.952 28 59.574 81 56.223
4 29 0.041 81 57.032 29 0.242 81 57.081
5 29 1.276 81 57.580 29 1.477 81 57.509
6 29 2.272 81 56.722 29 2.306 81 56.476
Miami-Dade E 1 25 38.323 80 20.813 25 38.241 80 20.632
2 25 38.214 80 20.849 25 38.362 80 20.942
3 25 38.517 80 20.937 25 38.573 80 20.771
4 25 38.566 80 20.684 25 38.465 80 20.576
5 25 38.439 80 20.573 25 38.408 80 20.799
6 25 38.345 80 20.781 25 38.321 80 20.584
Orange Butler 1 28 29.958 81 33.018 28 29.939 81 33.286
2 28 29.643 81 33.928 28 29.536 81 33.768
3 28 28.894 81 33.640 28 28.712 81 33.639
4 28 28.689 81 32.726 28 28.781 81 32.561
5 28 29.145 81 32.140 28 29.140 81 32.070
6 28 29.735 81 32.604 28 29.795 81 32.758
Orange Conway 1 28 27.836 81 21.429 28 27.770 81 21.203
2 28 27.776 81 20.684 28 27.653 81 20.476
3 28 27.298 81 21.038 28 27.452 81 21.192
4 28 27.854 81 21.473 28 27.943 81 21.638
5 28 28.856 81 20.939 28 28.754 81 20.680
6 28 28.243 81 20.401 28 28.111 81 20.600


Ivanhoe


28 33.891
28 33.619
28 33.815
28 33.627
28 33.825
28 33.972


81 22.417
81 22.606
81 22.728
81 22.915
81 22.839
81 23.038


28 33.652
28 33.818
28 33.673
28 33.768
28 33.824
28 33.980


81 22.510
81 22.620
81 22.785
81 22.876
81 23.025
81 22.840


County
Leon


Orange










Table 2: Continued.


Start
Lake Trans Latitude Longitude


28 32.200
28 31.631
28 31.620
28 32.023
28 31.688
28 32.425


39.725
40.029
39.827
38.986
38.373
38.653


Latitude
28 32.136
28 31.619
28 31.733
28 31.980
28 31.661
28 32.571


tI
Longitude
81 39.652
81 39.828
81 39.682
81 38.828
81 38.555
81 38.606


Orange Starke 1 28 34.321 81 32.520 28 34.436 81 32.433
2 28 34.562 81 32.336 28 34.552 81 32.105
3 28 34.220 81 31.899 28 34.151 81 31.880
4 28 34.074 81 32.341 28 34.227 81 32.464
5 28 33.899 81 32.330 28 33.823 81 32.233
6 28 34.046 81 32.090 28 33.972 81 32.256
Osceola Toho East 1 28 15.679 81 17.151 28 15.703 81 17.364
2 28 16.213 81 18.306 28 16.387 81 18.476
3 28 17.737 81 19.013 28 17.938 81 18.980
4 28 19.301 81 17.550 28 19.404 81 17.315
5 28 18.608 81 15.050 28 18.484 81 14.919
6 28 17.152 81 15.188 28 16.965 81 15.235
Polk Dexter 1 27 59.582 81 40.600 27 59.412 81 40.696
2 27 59.365 81 40.747 27 59.250 81 40.791
3 27 59.160 81 40.887 27 59.178 81 41.097
4 27 59.256 81 40.968 27 59.435 81 41.048
5 27 59.600 81 41.011 27 59.702 81 40.866
6 27 59.716 81 40.781 27 59.659 81 40.619
Walton Juniper 1 30 46.425 86 7.991 30 46.442 86 7.774
2 30 46.456 86 7.761 30 46.515 86 7.576
3 30 46.412 86 7.351 30 46.237 86 7.256
4 30 46.123 86 7.385 30 46.109 86 7.605
5 30 46.044 86 7.754 30 45.926 86 7.952
6 30 46.214 86 8.061 30 46.197 86 8.348
Walton Spring 1 30 44.911 86 3.674 30 45.008 86 3.822
2 30 45.104 86 3.776 30 45.213 86 3.926
3 30 45.383 86 3.630 30 45.340 86 3.462
4 30 45.244 86 3.355 30 45.044 86 3.482
5 30 45.033 86 3.497 30 44.834 86 3.609
6 30 44.821 86 3.618 30 44.876 86 3.681


County
Orange


Johns









Literature Cited


APHA. 1989. Standard Methods for the Examination of Water and Wastewater. 17th
Edition. American Public Health Association. Washington, D.C.


Brooks, H. K. 1981. Guide to the physiographic divisions of Florida. Florida Coop.
Extension Service., Institute Food Agriculture Sciences. University of Florida.


Canfield, D.E. Jr., 1991. Assessment of water quality in the lakes of north and central
Florida: The use of volunteer citizen monitors. Final Report (DER
ContractWM344). Florida Department of Environmental Regulation. Tallahassee,
Florida


D'Elia, C. F., P. A. Steudler, and N. Corwin. 1977. Determination of total nitrogen in
aqueous samples using persulfate digestion. Limnology and Oceanography
22:760-764.


Griffith, G. E., D. E. Canfield, Jr., C. A. Horsburgh, J. M. Omernik, and S. H. Azevedo.
1997. Lake regions of Florida. Report to the Florida Department of
Environmental Protection. U.S. Environmental Protection Agency, Corvallis, OR.


Krebs, C.J. 1999. Ecological Methodology. Second Edition. Addison-Wesley
Educational Publishers, Inc.


Maceina, M. J., and J. V. Shireman. 1980. The use of a recording fathometer for the
determination of distribution and biomass of hydrilla. Journal of Aquatic Plant
Management. 18: 34-49.


Menzel, D. W. and N. Corwin. 1965. The measurement of total phosphorus in seawater
based on the liberation of organically bound fractions by persulfate oxidation.
Limnology and Oceanography 10: 280-282.


Murphy, J. and J. P. Riley. 1962. A modified single solution method for the
determination of phosphate in natural waters. Analytica Chimica Acta 27:31-36.










Sartory, D. P., and J. U. Grobbelaar. 1984. Extraction of chlorophyll a from freshwater
phytoplankton for spectrophotometric analysis. Hydrobiologia 114: 177-187.


Shafer, M.D., R.E. Dickinson, J.P. Heaney and W.C. Huber. 1986. Gazetteer of Florida
Lakes. Florida Water Resources Research Center, Publication 96. Gainesville,
Florida.


Simal, J., M. A. Lage, and I. Iglesias. 1985. Second derivative ultraviolet spectroscopy
and sulfamic acid method for determination of nitrates in water. Journal of
Analytical Chemistry 68:962-964.


Wollin, K. M. 1987. Nitrate determination in surface waters as an example of the
application of UV derivative spectrometry to environmental analysis. Acta
Hydrochemica Hydrobiologia 15:459-469 (Ger.)

































Appendix A: Electrofishing data for all lakes sampled by Florida LAKEWATCH
personnel during 2008.











Electrofishing Data (Average of Six 10 Minute Transects)
Alachua Countv/Wauberg
2008


Common Name
Black crappie
Bluegill
Bowfin
Brook silverside
Brown bullhead
Eastern mosquitofish
Florida gar
Gizzard shad
Golden shiner
Largemouth bass
Redear sunfish
Seminole killifish
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
4
110
9
13
1
6
11
26
63
6
5
1
255


Percent of Total
1.6
43.1
3.5
5.1
0.4
2.4
4.3
10.2
24.7
2.4
2.0
0.4


Grams/hour
529
10330
22327
39
742
4
6459
1827
1809
5924
925
13
50927


Percent of Total
1.0
20.3
43.8
0.1
1.5
0.0
12.7
3.6
3.6
11.6
1.8
0.0


0.26
3.77
0.74
0.31
12











Electrofishing Data (Average of Six 10 Minute Transects)
Highlands County/Josephine
2008


Common Name
Bluegill
Brook silverside
Florida gar
Gizzard shad
Golden shiner
Largemouth bass
Redear sunfish
Seminole killifish
Taillight shiner
Threadfin shad
Warmouth
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
22
5
3
19
1
19
23
8
1
24
2
127


Percent of Total Grams/hour Percent of Total
17.3 1562 6.6
3.9 11 0.0
2.4 1806 7.6
15.0 767 3.2
0.8 16 0.1
15.0 15853 66.9
18.1 3313 14.0
6.3 99 0.4
0.8 1 0.0
18.9 161 0.7
1.6 110 0.5
23701


0.15
6.68
0.85
0.61
11











Electrofishing Data (Average of Six 10 Minute Transects)
Highlands County/June
2008


Common Name
Bluegill
Bowfin
Brook silverside
Chain pickerel
Lake chubsucker
Largemouth bass
Redear sunfish
Seminole killifish
Threadfin shad
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
20
1
100
8
1
77
62
4
3
276


Percent of Total Grams/hour Percent of Total
7.2 2265 5.7
0.4 1847 4.7
36.2 175 0.4
2.9 4985 12.6
0.4 821 2.1
27.9 18398 46.5
22.5 10987 27.8
1.4 49 0.1
1.1 13 0.0
39540


0.27
3.76
0.73
0.42
9











Electrofishing Data (Average of Six 10 Minute Transects)
Hillsborough County/Wilson
2008


Common Name
Bluegill
Bowfin
Florida gar
Lake chubsucker
Largemouth bass
Redear sunfish
Threadfin shad
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
48
4
7
1
11
10
2


Percent of Total Grams/hour Percent of Total
57.8 1372 6.7
4.8 6104 29.8
8.4 4648 22.7
1.2 37 0.2
13.3 7246 35.4
12.0 1027 5.0
2.4 28 0.1
20462


0.38
2.65
0.62
0.38
7











Electrofishing Data (Average of Six 10 Minute Transects)
Lake County/Grasshopper
2008


Common Name
Bluegill
Chain pickerel
Eastern mosquitofish
Florida gar
Lake chubsucker
Largemouth bass
Warmouth
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
9
4
1
3
10
5
1


Percent of Total Grams/hour Percent of Total
27.3 122 1.5
12.1 62 0.8
3.0 1 0.0
9.1 1548 19.3
30.3 2546 31.7
15.2 3626 45.1
3.0 127 1.6
8033


0.21
4.67
0.79
0.67
7











Electrofishing Data (Average of Six 10 Minute Transects)
Lake County/Sellers
2008


Common Name
Bluegill
Bowfin
Brook silverside
Florida gar
Golden shiner
Lake chubsucker
Largemouth bass
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
18
2
17
4
1
8
23
73


Percent of Total Grams/hour Percent of Total
24.7 619 2.9
2.7 4662 21.8
23.3 28 0.1
5.5 3143 14.7
1.4 78 0.4
11.0 2671 12.5
31.5 10213 47.7
21414


0.23
4.34
0.77
0.62
7











Electrofishing Data (Average of Six 10 Minute Transects)
Lake County/Wildcat
2008


Common Name
Bluegill
Eastern mosquitofish
Florida gar
Lake chubsucker
Largemouth bass
Total


Number/hour
59
30
1
3
15
108


Percent of Total Grams/hour Percent of Total
54.6 411 3.7
27.8 7 0.1
0.9 345 3.1
2.8 1932 17.6
13.9 8279 75.4
10976


Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


0.40
2.53
0.60
0.51
5











Electrofishing Data (Average of Six 10 Minute Transects)
Leon County/Jackson
2008


Common Name
Bluegill
Bowfin
Brook silverside
Chain pickerel
Florida gar
Golden shiner
Golden topminnow
Lake chubsucker
Largemouth bass
Redear sunfish
Warmouth
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
11
5
803
6
1
3
2
8
24
5
2
870


Percent of Total Grams/hour Percent of Total
1.3 677 3.2
0.6 10275 48.1
92.3 1086 5.1
0.7 822 3.8
0.1 931 4.4
0.3 84 0.4
0.2 8 0.0
0.9 1210 5.7
2.8 5876 27.5
0.6 222 1.0
0.2 177 0.8
21368


0.85
1.17
0.15
0.11
11











Electrofishing Data (Average of Six 10 Minute Transects)
Marion County/Mill Dam
2008


Common Name
Black crappie
Bluegill
Bowfin
Chain pickerel
Florida gar
Lake chubsucker
Largemouth bass
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
1
43
5
2
4
6
14


Percent of Total Grams/hour Percent of Total
1.3 305 1.4
57.3 3247 14.4
6.7 11375 50.5
2.7 562 2.5
5.3 1686 7.5
8.0 2646 11.7
18.7 2722 12.1
22542


0.38
2.64
0.62
0.38
7











Electrofishing Data (Average of Six 10 Minute Transects)
Marion County/Weir
2008


Common Name
Bluegill
Brook silverside
Chain pickerel
Golden shiner
Lake chubsucker
Largemouth bass
Redear sunfish
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
74
18
11
4
2
107
34
250


Percent of Total Grams/hour Percent of Total
29.6 5555 12.2
7.2 30 0.1
4.4 10497 23.1
1.6 192 0.4
0.8 1221 2.7
42.8 22449 49.3
13.6 5560 12.2
45503


0.30
3.37
0.70
0.48
7











Electrofishing Data (Average of Six 10 Minute Transects)
Miami-Dade Countv/E
2008


Common Name
Bluegill
Butterfly Peacock
Largemouth bass
Mayan cichlid
Redear sunfish
Warmouth
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
53
5
16
1
3
1


Percent of Total Grams/hour Percent of Total
67.1 1040 6.8
6.3 3785 24.8
20.3 9529 62.3
1.3 696 4.5
3.8 237 1.6
1.3 5 0.0
15290


0.50
2.01
0.50
0.34
6











Electrofishing Data (Average of Six 10 Minute Transects)
Orange County/Butler
2008


Common Name
Bluegill
Bowfin
Brook silverside
Chain pickerel
Dollar sunfish
Florida gar
Golden shiner
Lake chubsucker
Largemouth bass
Redear sunfish
Seminole killifish
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
13
5
36
6
1
6
4
5
53
18
8


Percent of Total Grams/hour Percent of Total
8.4 679 1.7
3.2 8910 21.9
23.2 65 0.2
3.9 5956 14.6
0.6 6 0.0
3.9 3413 8.4
2.6 177 0.4
3.2 3310 8.1
34.2 16080 39.5
11.6 2032 5.0
5.2 89 0.2
40719


0.20
5.00
0.80
0.45
11











Electrofishing Data (Average of Six 10 Minute Transects)
Orange County/Conway
2008


Common Name
Bluegill
Bowfin
Brook silverside
Chain pickerel
Florida gar
Golden shiner
Grass carp
Lake chubsucker
Largemouth bass
Redear sunfish
Seminole killifish
Swamp darter
Taillight shiner
Total


Number/hour
41
1
431
6
3
3
1
1
49
15
1
1
58
611


Percent of Total
6.7
0.2
70.5
1.0
0.5
0.5
0.2
0.2
8.0
2.5
0.2
0.2
9.5


Grams/hour
2106
2521
646
2469
1438
105
9142
399
17917
2107
10
1
67
38928


Percent of Total
5.4
6.5
1.7
6.3
3.7
0.3
23.5
1.0
46.0
5.4
0.0
0.0
0.2


Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


0.52
1.93
0.48
0.15
13











Electrofishing Data (Average of Six 10 Minute Transects)
Orange County/Ivanhoe
2008


Common Name
Black crappie
Bluegill
Brook silverside
Brown bullhead
Florida gar
Golden shiner
Largemouth bass
Redbreast sunfish
Redear sunfish
Seminole killifish
Warmouth
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
1
280
19
1
4
1
104
3
7
20
4
444


Percent of Total Grams/hour Percent of Total
0.2 243 0.3
63.1 31367 40.0
4.3 44 0.1
0.2 173 0.2
0.9 4163 5.3
0.2 26 0.0
23.4 40824 52.1
0.7 260 0.3
1.6 658 0.8
4.5 322 0.4
0.9 292 0.4
78372


0.46
2.19
0.54
0.20
11











Electrofishing Data (Average of Six 10 Minute Transects)
Orange County/Johns
2008


Common Name
Blue tilapia
Bluegill
Brook silverside
Eastern mosquitofish
Florida gar
Gizzard shad
Golden shiner
Grass carp
Lake chubsucker
Largemouth bass
Redear sunfish
Suckermouth Catfish
Threadfin shad
Total


Number/hour
1
26
4
1
4
14
4
1
5
8
5
1
8
82


Percent of Total
1.2
31.7
4.9
1.2
4.9
17.1
4.9
1.2
6.1
9.8
6.1
1.2
9.8


Grams/hour
1941
1138
8
1
2628
3539
320
19640
3039
5556
1299
12
47
39167


Percent of Total
5.0
2.9
0.0
0.0
6.7
9.0
0.8
50.1
7.8
14.2
3.3
0.0
0.1


Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


0.16
6.10
0.84
0.47
13











Electrofishing Data (Average of Six 10 Minute Transects)
Orange County/Starke
2008


Common Name
Blue tilapia
Bluegill
Brook silverside
Golden shiner
Lake chubsucker
Largemouth bass
Redbreast sunfish
Redear sunfish
Seminole killifish
Threadfin shad
Warmouth
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
2
39
77
52
4
65
5
34
67
30
1
376


Percent of Total Grams/hour Percent of Total
0.5 1090 3.4
10.4 1995 6.1
20.5 148 0.5
13.8 808 2.5
1.1 2226 6.8
17.3 22859 70.3
1.3 259 0.8
9.0 2074 6.4
17.8 872 2.7
8.0 161 0.5
0.3 37 0.1
32529


0.15
6.74
0.85
0.61
11











Electrofishing Data (Average of Six 10 Minute Transects)
Osceola Countv/Tohopekaliga East
2008


Common Name
Atlantic needlefish
Bluegill
Brook silverside
Chain pickerel
Florida gar
Gizzard shad
Largemouth bass
Redear sunfish
Threadfin shad
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
1
9
590
1
1
1
49
8
58
718


Percent of Total Grams/hour Percent of Total
0.1 4 0.0
1.3 1572 8.3
82.2 759 4.0
0.1 333 1.7
0.1 398 2.1
0.1 321 1.7
6.8 12236 64.2
1.1 3127 16.4
8.1 300 1.6
19051


0.69
1.46
0.31
0.16
9











Electrofishing Data (Average of Six 10 Minute Transects)
Polk County/Dexter
2008


Common Name
Black crappie
Bluegill
Brook silverside
Florida gar
Golden shiner
Lake chubsucker
Largemouth bass
Redear sunfish
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
1
16
87
3
3
3
49
6
168


Percent of Total Grams/hour Percent of Total
0.6 243 1.3
9.5 847 4.6
51.8 159 0.9
1.8 1215 6.6
1.8 35 0.2
1.8 1144 6.2
29.2 13998 75.5
3.6 888 4.8
18529


0.36
2.74
0.64
0.34
8











Electrofishing Data (Average of Six 10 Minute Transects)
Walton County/Juniper
2008


Common Name
Bluegill
Bowfin
Brook silverside
Chain pickerel
Florida gar
Grass carp
Largemouth bass
Redear sunfish
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
170
3
40
2
1
1
36
7


Percent of Total Grams/hour Percent of Total
65.4 2439 11.4
1.2 4428 20.8
15.4 97 0.5
0.8 132 0.6
0.4 254 1.2
0.4 9142 42.9
13.8 4477 21.0
2.7 355 1.7
21324


0.47
2.12
0.53
0.27
8











Electrofishing Data (Average of Six 10 Minute Transects)
Walton County/Spring
2008


Common Name
Bluegill
Channel catfish
Golden topminnow
Lake chubsucker
Largemouth bass
Redear sunfish
Warmouth
Total

Simpson's D
Simpson's 1/D
Simpson's 1-D
Simpson's evenness
Species Richness


Number/hour
47
5
1
69
28
33
3
186


Percent of Total Grams/hour Percent of Total
25.3 4753 7.5
2.7 13192 20.9
0.5 4 0.0
37.1 37272 59.2
15.1 6325 10.0
17.7 1331 2.1
1.6 96 0.2
62972


0.26
3.90
0.74
0.56
7

































Appendix B: Long-term monitoring project plant survey results for lakes sampled
during 2008











Alachua / Wauberg

Aquatic plant data collected on June 10, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
red maple
floating water-hyacinth
maidencane
Egyptian paspalidium
buttonbush
water hemlock
pickerelweed
duck-potato
water-pennywort
water primrose
wax myrtle
water-lettuce
willow
inundated beak-rush
common arrowhead
cat-tail
alligator-weed
coontail
elephant-ear
swamp titi
soft rush
joint-tail grass
southern naiad
spatterdock
torpedograss
vasey grass
red bay
smartweed
American cupscale


Plant Species
Acer rubrum
Eichhornia crassipes
Panicum hemitomon
Paspalidium geminatum
Cephalanthus occidentalis
Cicuta mexicana
Pontederia cordata
Sagittaria lancifolia
Hydrocotyle umbellata
Ludwigia octovalvis
Myrica cerifera
Pistia stratiotes
Salix spp.
Rhynchospora inundata
Sagittaria latifolia
Typha spp.
Alternanthera philoxeroides
Ceratophyllum demersum
Colocasia esculenta
Cyrilla racemiflora
Juncus ett.ll u.\l
Manisuris spp.
Najas guadalupensis
Nuphar luteum
Panicum repens
Paspalum urvillei
Persea borbonia
Polygonum hydropiperoides
Sacciolepis striata


Frequency (%)
90
90
90
70
60
60
60
50
40
40
40
40
30
20
20
20
10
10
10
10
10
10
10
10
10
10
10
10
10











Bradford / Sampson

Aquatic plant data collected on June 4, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
pickerelweed
tapegrass
Illinois pondweed
hydrilla
fragrant water-lily
maidencane
sesbans
bald cypress
red ludwigia
water primrose
American lotus
torpedograss
cat-tail
alligator-weed
Egyptian paspalidium
willow
buttonbush
wax myrtle
lemon bacopa
slender spikerush
rush fuirena
southern naiad
spatterdock
club-rush
water-pennywort
baby-tears
stonewort
purple bladderwort


Plant Species
Pontederia cordata
Vallisneria americana
Potamogeton illinoensis
Hydrilla verticillata
Nymphaea odorata
Panicum hemitomon
Sesbania spp.
Taxodium distichum
Ludwigia repens
Ludwigia octovalvis
Nelumbo lutea
Panicum repens
Typha spp.
Alternanthera philoxeroides
Paspalidium geminatum
Salix spp.
Cephalanthus occidentalis
Myrica cerifera
Bacopa caroliniana
Eleocharis baldwinii
Fuirena scirpoidea
Najas guadalupensis
Nuphar luteum
Eleocharis cellulosa
Hydrocotyle umbellata
Micranthemum umbrosum
Nitella spp.
Utricularia purpurea


Frequency (%)
100
100
90
80
70
70
70
70
60
60
60
60
60
40
40
40
30
30
20
20
20
20
20
10
10
10
10
10


57.0
14.2
2.0
1.1
3.6
345.0
1.6











Highlands / June

Aquatic plant data collected on August 7, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 15 evenly spaced transects around the lake.


Common Name
torpedograss
maidencane
slender spikerush
common salvinia
elephant-ear
water primrose
stonewort
pickerelweed
spatterdock
rush fuirena
flat-sedge
duck-potato
buttonbush
red root
wax myrtle
American cupscale
cat-tail
loblolly bay
Brazilian pepper
lemon bacopa
smartweed
willow
burhead sedge
alligator-weed
musk-grass
water hemlock
leconte sedge
water-pennywort
southern cutgrass
common duckweed
bog-moss
baby-tears
southern naiad

fragrant water-lily
banana-lily

giant bulrush
yellow-eyed grass


Plant Species
Panicum repens
Panicum hemitomon
Eleocharis baldwinii
Salvinia rotundifolia
Colocasia esculenta
Ludwigia octovalvis
Nitella spp.
Pontederia cordata
Nuphar luteum
Fuirena scirpoidea
Cyperus odoratus
Sagittaria lancifolia
Cephalanthus occidentalis
Lachnanthes caroliniana
Myrica cerifera
Sacciolepis striata
Typha spp.
Gordonia lasianthus
Schinus terebinthifolius
Bacopa caroliniana
Polygonum hydropiperoides
Salix spp.
Scirpus cubensis
Alternanthera philoxeroides
Chara spp.
Cicuta mexicana
Cyperus lecontei
Hydrocotyle umbellata
Leersia hexandra
Lemna minor
Mayacafluviatilis
Micranthemum umbrosum
Najas guadalupensis
Nitella prolonga
Nymphaea odorata
Nymphoides aquatica
Rhexia mariana
Scirpus californicus
Xyris spp.


Frequency (%)
93
87
60
60
53
53
53
53
47
40
33
33
27
27
27
27
27
20
20
13
13
13
13
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7


36.0
1.9
5.0
1.3
0.5
148.1
4.7











Lake / Cherry

Aquatic plant data collected on September 3, 2008

Percent area covered with aquatic vegetation (PAC, o%)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
maidencane
spatterdock
duck-potato
red root
sawgrass
flat-sedge
slender spikerush
water primrose
pickerelweed

buttonbush
annual spikrush
southern water-grass
water-pennywort
inundated beak-rush
cat-tail
torpedograss
burhead sedge
yellow-eyed grass
Mallows
red ludwigia
wax myrtle
Egyptian paspalidium
marsh fleabane
American cupscale
common salvinia


Plant Species
Panicum hemitomon
Nuphar luteum
Sagittaria lancifolia
Lachnanthes caroliniana
Cladium jamaicense
Cyperus odoratus
Eleocharis baldwinii
Ludwigia octovalvis
Pontederia cordata
Rhynchospora nitens
Cephalanthus occidentalis
Eleocharis geniculata
Hydrochloa caroliniensis
Hydrocotyle umbellata
Rhynchospora inundata
Typha spp.
Panicum repens
Scirpus cubensis
Xyris spp.
Hibiscus spp.
Ludwigia repens
Myrica cerifera
Paspalidium geminatum
Pluchea spp.
Sacciolepis striata
Salvinia rotundifolia


Frequency (%)
100
90
90
70
60
60
60
60
60
60
40
30
30
30
30
30
20
20
20
10
10
10
10
10
10
10


2.0
0.2
1.9
2.2
0.4
152.1
2.6











Lake / Dorr

Aquatic plant data collected on June 18, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
buttonbush
wax myrtle
maidencane
pickerelweed
water primrose
spatterdock
water-pennywort
sweetgum
swamp titi
burhead sedge
red ludwigia
torpedograss
elephant-ear
slender spikerush
frog's-bit
willow
red maple
southern water-grass
red root
fragrant water-lily
inundated beak-rush
duck-potato
common salvinia
giant bulrush
bald cypress


Plant Species
Cephalanthus occidentalis
Myrica cerifera
Panicum hemitomon
Pontederia cordata
Ludwigia octovalvis
Nuphar luteum
Hydrocotyle umbellata
Liquidambar styraciflua
Cyrilla racemiflora
Scirpus cubensis
Ludwigia repens
Panicum repens
Colocasia esculenta
Eleocharis baldwinii
Limnobium spongia
Salix spp.
Acer rubrum
Hydrochloa caroliniensis
Lachnanthes caroliniana
Nymphaea odorata
Rhynchospora inundata
Sagittaria lancifolia
Salvinia rotundifolia
Scirpus californicus
Taxodium distichum


Frequency (%)
90
80
80
80
70
60
50
50
40
40
30
30
20
20
20
20
10
10
10
10
10
10
10
10
10











Lake / Griffin

Aquatic plant data collected on July 8, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 20 evenly spaced transects around the lake.


Common Name
duck-potato
Egyptian paspalidium
willow
buttonbush
elephant-ear
water primrose
pickerelweed
cat-tail
water-pennywort
sawgrass
red maple
wax myrtle
maidencane
giant bulrush
big rose mallow
bald cypress
water hemlock
fragrant water-lily
smartweed
elderberry
sesbans
tapegrass
alligator-weed
musk-grass
spatterdock
yellow water-lily
arrow-arum
leconte sedge
Illinois pondweed
caric sedge
coontail
flat-sedge
buttonweed
club-rush
red ludwigia
torpedograss
common salvinia
sand cordgrass
bladderwort


Plant Species
Sagittaria lancifolia
Paspalidium geminatum
Salix spp.
Cephalanthus occidentalis
Colocasia esculenta
Ludwigia octovalvis
Pontederia cordata
Typha spp.
Hydrocotyle umbellata
Cladium jamaicense
Acer rubrum
Myrica cerifera
Panicum hemitomon
Scirpus californicus
Hibiscus grandiflorus
Taxodium distichum
Cicuta mexicana
Nymphaea odorata
Polygonum hydropiperoides
Sambucus canadensis
Sesbania spp.
Vallisneria americana
Alternanthera philoxeroides
Chara spp.
Nuphar luteum
Nymphaea mexicana
Peltandra virginica
Cyperus lecontei
Potamogeton illinoensis
Carex albolutescens
Ceratophyllum demersum
Cyperus odoratus
Diodia virginiana
Eleocharis cellulosa
Ludwigia repens
Panicum repens
Salvinia rotundifolia
Spartina bakeri
Utriculariafoliosa


Frequency (%)
90
85
85
60
60
60
60
60
55
50
35
35
35
35
30
30
20
20
20
20
20
20
15
15
15
15
15
10
10
5
5
5
5
5
5
5
5
5
5


0.0
0.0
2.3
0.7
0.5
134.1
2.0










Lake / Griffin


Common Name
giant cutgrass


Plant Species
Zizaniopsis miliacea


Frequency (%)
5











Lake / Harris

Aquatic plant data collected on June 24, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 15 evenly spaced transects around the lake.


Common Name
Egyptian paspalidium
maidencane
bald cypress
duck-potato
water primrose
cat-tail
water hemlock
pickerelweed
tapegrass
elephant-ear
water-pennywort
smartweed
musk-grass
spatterdock
giant reed
red maple
buttonbush
sawgrass
flat-sedge
wax myrtle
fragrant water-lily
willow
southern water-hemp
coinwort
leconte sedge
barnyard grass
floating water-hyacinth
slender spikerush
club-rush
rush fuirena
American lotus
swamp tupelo
torpedograss
marsh fleabane
Illinois pondweed
dwarf arrowhead
common salvinia
giant bulrush


Plant Species
Paspalidium geminatum
Panicum hemitomon
Taxodium distichum
Sagittaria lancifolia
Ludwigia octovalvis
Typha spp.
Cicuta mexicana
Pontederia cordata
Vallisneria americana
Colocasia esculenta
Hydrocotyle umbellata
Polygonum hydropiperoides
Chara spp.
Nuphar luteum
Phragmites australis
Acer rubrum
Cephalanthus occidentalis
Cladium jamaicense
Cyperus odoratus
Myrica cerifera
Nymphaea odorata
Salix spp.
Amaranthus australis
Centella asiatica
Cyperus lecontei
Echinochloa crusgalli
Eichhornia crassipes
Eleocharis baldwinii
Eleocharis cellulosa
Fuirena scirpoidea
Nelumbo lutea
Nyssa sylvatica
Panicum repens
Pluchea spp.
Potamogeton illinoensis
Sagittaria subulata
Salvinia rotundifolia
Scirpus californicus


Frequency (%)
100
93
87
73
53
53
47
47
47
40
33
33
20
20
20
13
13
13
13
13
13
13
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7











Lake / Minneola

Aquatic plant data collected on June 26, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
water primrose
maidencane
torpedograss
leconte sedge
sesbans
flat sedge

red root
elephant-ear
jointed flat sedge
slender spikerush
soft rush
Egyptian paspalidium
willow
alligator-weed
coinwort
buttonbush
flat-sedge
sedge spp.

rush fuirena

red ludwigia
swamp tupelo
red bay
marsh fleabane
pickerelweed
duck-potato


Plant Species
Ludwigia octovalvis
Panicum hemitomon
Panicum repens
Cyperus lecontei
Sesbania spp.
Cyperus polystachyos
Fimbristylis miliacea
Lachnanthes caroliniana
Colocasia esculenta
Cyperus haspan
Eleocharis baldwinii
Juncus ettI.'Nul.\
Paspalidium geminatum
Salix spp.
Alternanthera philoxeroides
Centella asiatica
Cephalanthus occidentalis
Cyperus odoratus
Cyperus spp.
Cyperus surinamensis
Fuirena scirpoidea
Juncus validus
Ludwigia repens
Nyssa sylvatica
Persea borbonia
Pluchea spp.
Pontederia cordata
Sagittaria lancifolia


Frequency (%)
90
90
90
60
60
30
30
30
20
20
20
20
20
20
10
10
10
10
10
10
10
10
10
10
10
10
10
10











Lake / Wildcat

Aquatic plant data collected on June 17, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
maidencane
buttonbush
sawgrass
loblolly bay
dahoon holly
red ludwigia
wax myrtle
banana-lily
pickerelweed
spatterdock
slender spikerush
hatpin
rush fuirena
water-pennywort
red root
fragrant water-lily
torpedograss
dwarf arrowhead
purple bladderwort
red maple
Tracy's beak-rush
Florida bladderwort
homed bladderwort
yellow-eyed grass


Plant Species
Panicum hemitomon
Cephalanthus occidentalis
Cladium jamaicense
Gordonia lasianthus
Ilex cassine
Ludwigia repens
Myrica cerifera
Nymphoides aquatica
Pontederia cordata
Nuphar luteum
Eleocharis baldwinii
Eriocaulon decangulare
Fuirena scirpoidea
Hydrocotyle umbellata
Lachnanthes caroliniana
Nymphaea odorata
Panicum repens
Sagittaria subulata
Utricularia purpurea
Acer rubrum
Rhynchospora tracyi
Utriculariafloridana
Utricularia cornuta
Xyris spp.


Frequency (%)
100
80
80
60
50
40
40
40
40
30
20
20
20
20
20
20
20
20
20
10
10
10
10
10











Marion / Mill Dam

Aquatic plant data collected on June 12, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
bog-moss
maidencane
banana-lily
lemon bacopa
buttonbush
sawgrass
rush fuirena
spatterdock
slender spikerush
water-pennywort
leconte sedge
torpedograss
fragrant water-lily
pickerelweed
willow
yellow-eyed grass
water-shield
red ludwigia
water primrose
wax myrtle
smartweed
inundated beak-rush
small headed beakrush
duck-potato


Plant Species
Mayacafluviatilis
Panicum hemitomon
Nymphoides aquatica
Bacopa caroliniana
Cephalanthus occidentalis
Cladium jamaicense
Fuirena scirpoidea
Nuphar luteum
Eleocharis baldwinii
Hydrocotyle umbellata
Cyperus lecontei
Panicum repens
Nymphaea odorata
Pontederia cordata
Salix spp.
Xyris spp.
Brasenia schreberi
Ludwigia repens
Ludwigia octovalvis
Myrica cerifera
Polygonum hydropiperoides
Rhynchospora inundata
Rhynchospora microcephala
Sagittaria lancifolia


Frequency (%)
100
100
90
70
70
70
60
60
40
40
30
30
20
20
20
20
10
10
10
10
10
10
10
10


12.0
1.3
1.8
1.2
1.1
130.7
3.7











Marion / Weir

Aquatic plant data collected on June 11, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
water-pennywort
torpedograss
duck-potato
rush fuirena
maidencane
leconte sedge
slender spikerush
rush
Illinois pondweed
water primrose
stonewort
Egyptian paspalidium
lemon bacopa
musk-grass
flat sedge
red root
yellow-eyed grass
coinwort
sawgrass
hydrilla
wax myrtle
sesbans
tapegrass
red maple
care sedge
buttonbush
flat-sedge
southern naiad
spatterdock
fragrant water-lily
variableleaf pondweed
bald cypress
cat-tail
Florida bladderwort


Plant Species
Hydrocotyle umbellata
Panicum repens
Sagittaria lancifolia
Fuirena scirpoidea
Panicum hemitomon
Cyperus lecontei
Eleocharis baldwinii
Juncus marginatus
Potamogeton illinoensis
Ludwigia octovalvis
Nitella spp.
Paspalidium geminatum
Bacopa caroliniana
Chara spp.
Cyperus polystachyos
Lachnanthes caroliniana
Xyris spp.
Centella asiatica
Cladium jamaicense
Hydrilla verticillata
Myrica cerifera
Sesbania spp.
Vallisneria americana
Acer rubrum
Carex spp.
Cephalanthus occidentalis
Cyperus odoratus
Najas guadalupensis
Nuphar luteum
Nymphaea odorata
Potamogeton diversifolius
Taxodium distichum
Typha spp.
Utriculariafloridana


Frequency (%)
90
90
80
70
70
60
60
60
60
50
50
50
40
30
30
30
30
20
20
20
20
20
20
10
10
10
10
10
10
10
10
10
10
10


1.0
0.0
2.6
0.0
0.0
120.6
4.8











Miami-Dade / E

Aquatic plant data collected on August 13, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
musk-grass
Illinois pondweed
torpedograss
southern naiad
stonewort
frog's fruit
bacopa
annual spikrush
water-pennywort


Plant Species
Chara spp.
Potamogeton illinoensis
Panicum repens
Najas guadalupensis
Nitella spp.
Phyla hodiflora
Bacopa monnieri
Eleocharis geniculata
Hydrocotyle umbellata


Frequency (%)
100
90
70
40
40
20
10
10
10











Orange / Apopka

Aquatic plant data collected on September 4, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 20 evenly spaced transects around the lake.


Common Name
cat-tail
water primrose
elephant-ear
duck-potato
pickerelweed
willow
water-pennywort
smartweed
southern water-hemp
torpedograss
red maple
seashore marsh-mallow
giant bulrush
sawgrass
Egyptian paspalidium
flat-sedge
American cupscale
buttonbush
water hemlock
alligator-weed
salt-bush
wax myrtle
napier grass
water-lettuce
leconte sedge
barnyard grass
common duckweed
swamp tupelo
maidencane
arrow-arum
marsh fleabane
common arrowhead
common salvinia
soft stem bulrush
tapegrass
canna
floating water-hyacinth
giant spikerush
spatterdock


Plant Species
Typha spp.
Ludwigia octovalvis
Colocasia esculenta
Sagittaria lancifolia
Pontederia cordata
Salix spp.
Hydrocotyle umbellata
Polygonum hydropiperoides
Amaranthus australis
Panicum repens
Acer rubrum
Kosteletzkya virginica
Scirpus californicus
Cladium jamaicense
Paspalidium geminatum
Cyperus odoratus
Sacciolepis striata
Cephalanthus occidentalis
Cicuta mexicana
Alternanthera philoxeroides
Baccharis spp.
Myrica cerifera
Pennisetum purpureum
Pistia stratiotes
Cyperus lecontei
Echinochloa crusgalli
Lemna minor
Nyssa sylvatica
Panicum hemitomon
Peltandra virginica
Pluchea spp.
Sagittaria latifolia
Salvinia rotundifolia
Scirpus validus
Vallisneria americana
Canna spp.
Eichhornia crassipes
Eleocharis interstincta
Nuphar luteum


Frequency (%)
95
80
75
75
70
65
55
55
50
50
45
45
35
30
30
25
25
20
20
15
15
15
15
15
10
10
10
10
10
10
10
10
10
10
10
5
5
5
5


2.2
1.6
0.0
141.7











Orange / Apopka


Common Name
bald cypress
arrow root


Plant Species
Taxodium distichum
Thalia geniculata


Frequency (%)
5











Osceola / Tohopekaliga East

Aquatic plant data collected on August 5, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 20 evenly spaced transects around the lake.


Common Name
giant bulrush
torpedograss
pickerelweed
water primrose
duck-potato
cat-tail
Illinois pondweed
purple bladderwort
slender spikerush
willow
water-pennywort
spatterdock
Egyptian paspalidium
maidencane
common salvinia
bladderwort
southern water-grass
fragrant water-lily
tapegrass
alligator-weed
lemon bacopa
elephant-ear
red root
American lotus
sesbans
club-rush
flat-sedge
rush fuirena
big rose mallow
wax myrtle
stonewort
banana-lily
smartweed
yellow-eyed grass
dwarf arrowhead
baby-tears
burhead sedge
red maple
purple fanwort


Plant Species
Scirpus californicus
Panicum repens
Pontederia cordata
Ludwigia octovalvis
Sagittaria lancifolia
Typha spp.
Potamogeton illinoensis
Utricularia purpurea
Eleocharis baldwinii
Salix spp.
Hydrocotyle umbellata
Nuphar luteum
Paspalidium geminatum
Panicum hemitomon
Salvinia rotundifolia
Utriculariafoliosa
Hydrochloa caroliniensis
Nymphaea odorata
Vallisneria americana
Alternanthera philoxeroides
Bacopa caroliniana
Colocasia esculenta
Lachnanthes caroliniana
Nelumbo lutea
Sesbania spp.
Eleocharis cellulosa
Cyperus odoratus
Fuirena scirpoidea
Hibiscus grandiflorus
Myrica cerifera
Nitella spp.
Nymphoides aquatica
Polygonum hydropiperoides
Xyris spp.
Sagittaria subulata
Micranthemum umbrosum
Scirpus cubensis
Acer rubrum
Cabomba pulcherrima


Frequency (%)
100
90
90
85
85
85
80
75
70
65
55
55
55
50
50
50
45
45
45
40
35
35
35
35
35
30
25
25
25
25
25
25
25
25
20
15
15
10
10


5.0
0.4
2.0
1.3
1.7
1320.9
2.6











Osceola / Tohopekaliga East


Common Name
buttonbush
barnyard grass
floating water-hyacinth
coontail
water hemlock
leconte sedge
jointed flat sedge
buttonweed
giant spikerush
hydrilla
frog's-bit
red ludwigia
southern naiad
marsh fleabane
inundated beak-rush
American cupscale
common arrowhead
Brazilian pepper
three-square
chicken spike
respuinata bladderwort


Plant Species
Cephalanthus occidentalis
Echinochloa crusgalli
Eichhornia crassipes
Ceratophyllum demersum
Cicuta mexicana
Cyperus lecontei
Cyperus haspan
Diodia virginiana
Eleocharis interstincta
Hydrilla verticillata
Limnobium spongia
Ludwigia repens
Najas guadalupensis
Pluchea spp.
Rhynchospora inundata
Sacciolepis striata
Sagittaria latifolia
Schinus terebinthifolius
Scirpus americanus
Sphenoclea zeylandica
Utricularia resupinata


Frequency (%)
10
10
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5











Pinellas / Tarpon

Aquatic plant data collected on August 4, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
cat-tail
coontail
floating water-hyacinth
common salvinia
tapegrass
hydrilla
alligator-weed
water primrose
elephant-ear
torpedograss
wax myrtle
Illinois pondweed
American cupscale
willow
red maple
flat-sedge
red ludwigia
duck-potato
giant bulrush
water-pennywort
burhead sedge
bald cypress
common duckweed

stonewort
spatterdock
Egyptian paspalidium
frog's fruit
water-lettuce
smartweed
pickerelweed
red mangrove


Plant Species
Typha spp.
Ceratophyllum demersum
Eichhornia crassipes
Salvinia rotundifolia
Vallisneria americana
Hydrilla verticillata
Alternanthera philoxeroides
Ludwigia octovalvis
Colocasia esculenta
Panicum repens
Myrica cerifera
Potamogeton illinoensis
Sacciolepis striata
Salix spp.
Acer rubrum
Cyperus odoratus
Ludwigia repens
Sagittaria lancifolia
Scirpus californicus
Hydrocotyle umbellata
Scirpus cubensis
Taxodium distichum
Lemna minor
Ludwigia spp.
Nitella spp.
Nuphar luteum
Paspalidium geminatum
Phyla hodiflora
Pistia stratiotes
Polygonum hydropiperoides
Pontederia cordata
Rhizophora mangle


Frequency (%)
100
90
90
80
80
70
60
60
50
50
40
40
40
40
30
30
30
30
30
20
20
20
10
10
10
10
10
10
10
10
10
10


35.0
7.7
4.9
6.5
5.2
129.6
2.6











Polk / Eloise

Aquatic plant data collected on August 6, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
bald cypress
water primrose
smartweed
flat-sedge
water-pennywort
alligator-weed
torpedograss
Egyptian paspalidium
duck-potato
maidencane
elephant-ear
hydrilla
cat-tail
Brazilian pepper
giant bulrush
tapegrass
floating water-hyacinth

marsh fleabane
southern water-hemp
coontail
umbrella sedge
barnyard grass
common duckweed
arrow-arum
American cupscale


Plant Species
Taxodium distichum
Ludwigia octovalvis
Polygonum hydropiperoides
Cyperus odoratus
Hydrocotyle umbellata
Alternanthera philoxeroides
Panicum repens
Paspalidium geminatum
Sagittaria lancifolia
Panicum hemitomon
Colocasia esculenta
Hydrilla verticillata
Typha spp.
Schinus terebinthifolius
Scirpus californicus
Vallisneria americana
Eichhornia crassipes
Nitella prolonga
Pluchea spp.
Amaranthus australis
Ceratophyllum demersum
Cyperus alternifolius
Echinochloa crusgalli
Lemna minor
Peltandra virginica
Sacciolepis striata


Frequency (%)
100
90
90
70
70
60
60
60
60
50
40
40
40
30
30
30
20
20
20
10
10
10
10
10
10
10











Putnam / Crescent

Aquatic plant data collected on July 22, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 15 evenly spaced transects around the lake.


Common Name
bald cypress
tapegrass
elephant-ear
common salvinia
buttonbush
red maple
water-lettuce
giant bulrush
water-pennywort
Egyptian paspalidium
alligator-weed
barnyard grass
hydrilla
common duckweed
smartweed
floating water-hyacinth
water primrose
azolla
water hemlock
wax myrtle
southern naiad
swamp tupelo
giant reed
pickerelweed
willow
soft stem bulrush
sesbans
coontail
spatterdock
arrow-arum
wild rice
salt-bush
flat-sedge
sedge spp.

southern cutgrass
sweetgum
red ludwigia
baby-tears


Plant Species
Taxodium distichum
Vallisneria americana
Colocasia esculenta
Salvinia rotundifolia
Cephalanthus occidentalis
Acer rubrum
Pistia stratiotes
Scirpus californicus
Hydrocotyle umbellata
Paspalidium geminatum
Alternanthera philoxeroides
Echinochloa crusgalli
Hydrilla verticillata
Lemna minor
Polygonum hydropiperoides
Eichhornia crassipes
Ludwigia octovalvis
Azolla caroliniana
Cicuta mexicana
Myrica cerifera
Najas guadalupensis
Nyssa sylvatica
Phragmites australis
Pontederia cordata
Salix spp.
Scirpus validus
Sesbania spp.
Ceratophyllum demersum
Nuphar luteum
Peltandra virginica
Zizania aquatica
Baccharis spp.
Cyperus odoratus
Cyperus spp.
Cyperus surinamensis
Leersia hexandra
Liquidambar styraciflua
Ludwigia repens
Micranthemum umbrosum


Frequency (%)
73
67
60
60
53
47
47
47
40
40
33
33
33
33
33
27
27
20
20
20
20
20
20
20
20
20
20
13
13
13
13
7
7
7
7
7
7
7
7











Putnam / Crescent


Common Name
frog's fruit
inundated beak-rush
swamp dock
duck-potato
dwarf arrowhead
lizard's-tail


Plant Species
Phyla hodiflora
Rhynchospora inundata
Rumex verticillatus
Sagittaria lancifolia
Sagittaria subulata
Saururus cernuus


Frequency (%)
7
7
7
7
7
7











Putnam / George

Aquatic plant data collected on July 15, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 20 evenly spaced transects around the lake.


Common Name
tapegrass
floating water-hyacinth
yellow water-lily
common duckweed
common salvinia
barnyard grass
coontail
water-lettuce
big rose mallow
frog's-bit
bald cypress
cat-tail
hydrilla
widgeon grass
water-meal
southern naiad
water-pennywort
pickerelweed
musk-grass
elephant-ear
slender spikerush
giant reed
red maple
salt-bush
flat-sedge
willow
giant bulrush
alligator-weed
bacopa
buttonbush
water hemlock
leconte sedge
wax myrtle
Egyptian paspalidium
smartweed
Illinois pondweed
American cupscale
three-square
bladderwort


Plant Species
Vallisneria americana
Eichhornia crassipes
Nymphaea mexicana
Lemna minor
Salvinia rotundifolia
Echinochloa crusgalli
Ceratophyllum demersum
Pistia stratiotes
Hibiscus grandiflorus
Limnobium spongia
Taxodium distichum
Typha spp.
Hydrilla verticillata
Ruppia maritima
Wolffia spp.
Najas guadalupensis
Hydrocotyle umbellata
Pontederia cordata
Chara spp.
Colocasia esculenta
Eleocharis baldwinii
Phragmites australis
Acer rubrum
Baccharis spp.
Cyperus odoratus
Salix spp.
Scirpus californicus
Alternanthera philoxeroides
Bacopa monnieri
Cephalanthus occidentalis
Cicuta mexicana
Cyperus lecontei
Myrica cerifera
Paspalidium geminatum
Polygonum hydropiperoides
Potamogeton illinoensis
Sacciolepis striata
Scirpus americanus
Utriculariafoliosa


Frequency (%)
95
90
90
70
60
55
50
50
45
45
45
45
40
40
35
30
25
25
20
20
20
20
15
15
15
15
15
10
10
10
10
10
10
10
10
10
10
10
10


3.0
0.3
1.4
5.1
4.7
345.8
2.5











Putnam / George


Common Name
azolla
stiff cornel dogwood
loblolly bay
sweetgum
fragrant water-lily
swamp tupelo
torpedograss
marsh fleabane
duck-potato
common arrowhead
sesbans
sand cordgrass


Plant Species
Azolla caroliniana
Cornus foemina
Gordonia lasianthus
Liquidambar styraciflua
Nymphaea odorata
Nyssa sylvatica
Panicum repens
Pluchea spp.
Sagittaria lancifolia
Sagittaria latifolia
Sesbania spp.
Spartina bakeri


Frequency (%)
5











Seminole / Monroe

Aquatic plant data collected on August 14, 2008


Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)


2.4
678.0
2.0


Frequency that plant species occur in 5 evenly spaced transects around the lake (this is a lower number of
transects than previous sampling due to high water/closing of waterway due to tropical storm "Fay").


Common Name
water-lettuce
common salvinia
coontail
floating water-hyacinth
hydrilla
giant reed
tapegrass
alligator-weed
common duckweed
southern naiad
willow
giant bulrush
water-pennywort
American lotus
American cupscale
cat-tail
azolla
big rose mallow
water primrose
Egyptian paspalidium
smartweed
bald cypress
water-meal


Plant Species
Pistia stratiotes
Salvinia rotundifolia
Ceratophyllum demersum
Eichhornia crassipes
Hydrilla verticillata
Phragmites australis
Vallisneria americana
Alternanthera philoxeroides
Lemna minor
Najas guadalupensis
Salix spp.
Scirpus californicus
Hydrocotyle umbellata
Nelumbo lutea
Sacciolepis striata
Typha spp.
Azolla caroliniana
Hibiscus grandiflorus
Ludwigia octovalvis
Paspalidium geminatum
Polygonum hydropiperoides
Taxodium distichum
Wolffia spp.


Frequency (%)
100
100
80
80
80
80
80
60
60
60
60
60
40
40
40
40
20
20
20
20
20
20
20











Walton / Juniper East

Aquatic plant data collected on July 29, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
lemon bacopa
American cupscale
water primrose
torpedograss
fragrant water-lily
respuinata bladderwort
swamp titi
slender spikerush
red root
red ludwigia
banana-lily
red maple
flat-sedge
spatterdock
alligator-weed
elephant-ear

water-pennywort
sweetbay
wax myrtle
American lotus
pickerelweed
few flowered beakrush
common arrowhead
cat-tail
Florida bladderwort


Plant Species
Bacopa caroliniana
Sacciolepis striata
Ludwigia octovalvis
Panicum repens
Nymphaea odorata
Utricularia resupinata
Cyrilla racemiflora
Eleocharis baldwinii
Lachnanthes caroliniana
Ludwigia repens
Nymphoides aquatica
Acer rubrum
Cyperus odoratus
Nuphar luteum
Alternanthera philoxeroides
Colocasia esculenta
Fimbristylis miliacea
Hydrocotyle umbellata
Magnolia virginiana
Myrica cerifera
Nelumbo lutea
Pontederia cordata
Rhynchospora rariflora
Sagittaria latifolia
Typha spp.
Utriculariafloridana


Frequency (%)
100
80
60
60
50
50
30
30
30
30
30
20
20
20
10
10
10
10
10
10
10
10
10
10
10
10











Walton / Juniper West

Aquatic plant data collected on July 30, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
lemon bacopa
American cupscale
banana-lily
water primrose
swamp titi
torpedograss
slender spikerush
red root
St. John's wort
red ludwigia
fragrant water-lily
respuinata bladderwort
red maple
alligator-weed
water-shield
flat-sedge
wax myrtle
smartweed
inundated beak-rush
Florida bladderwort
giant spikerush

water-pennywort

bog-moss
spatterdock
pickerelweed
dwarf arrowhead
bladderwort


Plant Species
Bacopa caroliniana
Sacciolepis striata
Nymphoides aquatica
Ludwigia octovalvis
Cyrilla racemiflora
Panicum repens
Eleocharis baldwinii
Lachnanthes caroliniana
Hypericum spp.
Ludwigia repens
Nymphaea odorata
Utricularia resupinata
Acer rubrum
Alternanthera philoxeroides
Brasenia schreberi
Cyperus odoratus
Myrica cerifera
Polygonum hydropiperoides
Rhynchospora inundata
Utricularia floridana
Eleocharis interstincta
Fimbristylis miliacea
Hydrocotyle umbellata
Juncus trigonocarpus
Mayacafluviatilis
Nuphar luteum
Pontederia cordata
Sagittaria subulata
Utriculariafoliosa


Frequency (%)
100
100
70
60
50
50
40
40
30
30
30
30
20
20
20
20
20
20
20
20
10
10
10
10
10
10
10
10
10











Walton / Spring

Aquatic plant data collected on July 30, 2008

Percent area covered with aquatic vegetation (PAC, %)
Percent of lake's volume filled with vegetation (PVI, %)
Average emergent plant biomass (kg wet wt/m2)
Average floating-leaved plant biomass (kg wet wt/m2)
Average submersed plant biomass (kg wet wt/m2)
Average width of emergent and floating-leaved zone (ft.)
Average lake depth (m)

Frequency that plant species occur in 10 evenly spaced transects around the lake.


Common Name
slender spikerush
torpedograss
red ludwigia
Florida bladderwort
water-shield
bog-moss
red root
small headed beakrush
swamp titi

water-pennywort
Savanna seedbox
sweetbay
banana-lily
maidencane
duck-potato
cat-tail
homed bladderwort
buttonbush
buttonweed
loblolly bay
soft rush
water primrose
wax myrtle
fragrant water-lily
common arrowhead
yellow-eyed grass


Plant Species
Eleocharis baldwinii
Panicum repens
Ludwigia repens
Utriculariafloridana
Brasenia schreberi
Mayacafluviatilis
Lachnanthes caroliniana
Rhynchospora microcephala
Cyrilla racemiflora
Fimbristylis miliacea
Hydrocotyle umbellata
Ludwigia virgata
Magnolia virginiana
Nymphoides aquatica
Panicum hemitomon
Sagittaria lancifolia
Typha spp.
Utricularia cornuta
Cephalanthus occidentalis
Diodia virginiana
Gordonia lasianthus
Juncus e ttul.\ I.
Ludwigia octovalvis
Myrica cerifera
Nymphaea odorata
Sagittaria latifolia
Xyris spp.


Frequency (%)
100
100
90
90
80
80
60
40
30
30
30
20
20
20
20
20
20
20
10
10
10
10
10
10
10
10
10

































Appendix C: Water chemistry data for all lakes sampled in 2008 as part of the long
term monitoring program.












Lochloosa (Alachua County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 29031'2.6", Longitude 82o7'22.5"

Period of record: 133 sampling dates; 9/3/93 to 1/27/09

Surface Area (LAKEWATCH): 5648.7 acres / 2286 hectares

Lake Region (Griffith et al. 1997): Central Valley (75-08)

Geologic formation (Brooks 1981):
The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Alachua Prairies subdivision of the Northern Peninsual Plains division of the Ocala Uplift District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 7 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 133 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
29
750
9.2
0.5


Average
69
2250
93.8
1.7


Maximum
180
6460
348.8
5


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 4 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/30/08
3/26/08
4/22/08
5/14/08
6/26/08
7/28/08
8/29/08
9/30/08
10/30/08
11/25/08
2008 Average


TP (gg/L)
83
92
74
73
61
62
71
52
50
56


TN (Lg/L)
3225
3328
3860
4028
3272
3678
2938
2720
2958
2982
3299


CHL (Ig/L)
97.7
190
246.2
172
137.8
181.5
146.8
142.5
133
104.5
155.2


SECCHI (ft)
0.6
0.7
0.5
0.9
0.8
0.5
0.7
0.9
0.6
0.9












Newnan (Alachua County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 29037'55.9", Longitude 82o13'20.2"

Period of record: 116 sampling dates; 9/10/93 to 12/31/08

Surface Area (Shafer et al. 1986): 7427 acres / 3006 hectares

Lake Region (Griffith et al. 1997): Central Valley (75-08)

Geologic formation (Brooks 1981):
The geology is dominated by phosphatic sand, clayey fine sand, and clay of the Bone Valley Formation, and by the phosphatic
sand, silty sand, and clay of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Newnans Lake Basin subdivision of the Northern Peninsual Plains division of the Ocala Uplift District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 5 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 116 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
58
1250
19


Average
142
3335
194.2


Maximum
347.7
11500
493.3
2.5


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/28/08
2/28/08
3/20/08
4/29/08
5/30/08
6/29/08
7/25/08
8/30/08
9/29/08
10/30/08
11/29/08
12/31/08
2008 Average


TP (pg/L)
200
215
138
167
140
192
218
255
120
223
194
258


TN (g/L)
3410
3323
2923
3650
2293
3550
4097
4067
2677
3897
3860
4797
3545


CHL (Ig/L)
97.1
129.3
121.7
214.3
62.7
211.3
256.3
242.3
103.7
187
154
217.3
166.4


SECCHI (ft)
1
1
1
1
1.5
1
1
0.8
1.3
0.8
0.8
0.8












Orange (Alachua County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 29027'49.9", Longitude 82o10'52"

Period of record: 129 sampling dates; 9/3/93 to 11/25/08

Surface Area (LAKEWATCH): 13859.8 acres / 5609 hectares

Lake Region (Griffith et al. 1997): Central Valley (75-08)

Geologic formation (Brooks 1981):
The geology is dominated by terrace deposits of surface sand over clayey sand and clay with basal deposits of limestone of the
preglacial Pleistocene

Physiographic region (Brooks 1981):
The lake lies in the Alachua Prairies subdivision of the Northern Peninsual Plains division of the Ocala Uplift District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 4 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 129 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
22
955
5.2
0.7


Average
74
1785
51.6
2.5


Maximum
302.7
5483.3
307.5
7


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 4 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/30/08
3/26/08
4/22/08
5/14/08
6/26/08
7/29/08
8/29/08
9/30/08
10/30/08
11/25/08
2008 Average


TP (pg/L)
61
89
73
54
60
52
72
61
48
38
61


TN (g/L)
2222
2940
3308
3062
2105
2715
2865
2433
2112
1772
2554


CHL (Ig/L)
40.3
108.5
121.5
23.5
49.5
83.5
136.2
73.5
36.8
20
69.3


SECCHI (ft)
0.9
0.8
1.2
1.9
1.5
1.2
0.9
1.1
1.5
1.6
1.3











Santa Fe (Alachua County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 29044'19.2", Longitude 824'20.1"

Period of record: 253 sampling dates; 8/16/86 to 12/3/08

Surface Area (LAKEWATCH): 4970 acres / 2011 hectares

Lake Region (Griffith et al. 1997): Upper Santa Fe Flatwoods (75-03)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Perched Lake and Prairies division of the Central Lake District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 7 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 253 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)



2008 Florida LAKEWATCH Data


Minimum


Average
11
468
7.2
7.4


Maximum
39
846.7
34.3
17.5


Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
4/2/08
5/26/08
6/25/08
8/26/08
9/28/08
10/30/08
12/3/08
2008 Average


TP (gg/L)
19
24
20
29
20
18
14
21


TN (Lg/L)
630
670
807
753
657
593
600
673


CHL (Ig/L)
9.3
14.7
26
31.7
14.7
12.7
13.3


SECCHI (ft)
5.5
4.9
4.2
4.9
5.8
6.3
6.3












Wauberg (Alachua County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 29031'48.4", Longitude 8218'1.74"

Period of record: 214 sampling dates; 3/31/90 to 11/26/08

Surface Area (LAKEWATCH): 370.6 acres / 150 hectares

Lake Region (Griffith et al. 1997): Central Valley (75-08)

Geologic formation (Brooks 1981):
The geology is dominated by clayey sand and clay with sandy to clayey limestone of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Fairfield Hills subdivision of the Marion Hills division of the Ocala Uplift District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 10 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 214 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
54
1153
29.7


Average
126
1920
97.2
1.9


Maximum
317.3
3240
240.3
3.5


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/27/08
2/23/08
3/27/08
4/28/08
5/22/08
6/18/08
7/19/08
8/29/08
9/24/08
10/31/08
11/26/08
2008 Average


TP (gg/L)
158
148
130
131
172
135
142
138
123
109
112


TN ([L/L)
2323
2260
2340
2140
2843
2557
2677
2537
2520
2067
1983
2386


CHL (Ig/L)
111
94.3
93.7
68.3
163.7
140
152.3
149
140.3
86.7
86
116.8


SECCHI (ft)
1.5
2
1.8
2
1.3
1.5
1.5
1.5

2
2











Deer Point (Bay County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 3017'24.18", Longitude 85035'30.05"

Period of record: 77 sampling dates; 1/10/90 to 12/11/08

Surface Area (Shafer et al. 1986): 5000 acres / 2024 hectares

Lake Region (Griffith et al. 1997): Gulf Coast Lowlands (75-01)

Geologic formation (Brooks 1981):
The geology is dominated by fine sand and silt with lenses of gravel and clay of the Apalachicola paleo-cuspate delta and
alluvial plain

Physiographic region (Brooks 1981):
The lake lies in the Delta Plain division of the Apalachicola Delta District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 5 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 77 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
3
70
0.OE+01


Average
8
249
1.7


Maximum
16.5
566.7
5
12


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
7/31/08
9/25/08
10/15/08
12/11/08
2008 Average


TP (pg/L)
8
10
16
16


TN (g/L)
230
347
303
420
325


CHL (Ig/L)


SECCHI (ft)
7.5












Sampson (Bradford County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 29055'32.3", Longitude 8211'25"

Period of record: 117 sampling dates; 4/16/99 to 12/25/08

Surface Area (LAKEWATCH): 1865.6 acres / 755 hectares

Lake Region (Griffith et al. 1997): Upper Santa Fe Flatwoods (75-03)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Perched Lake and Prairies division of the Central Lake District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 5 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 117 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
5


Average
23
713
7


Maximum
66.7
1393.3
33.7
11.3


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/27/08
2/24/08
3/23/08
4/27/08
5/26/08
6/21/08
7/19/08
8/24/08
9/21/08
10/19/08
11/24/08
12/25/08
2008 Average


TP (gg/L)
18
19
18
16
20
23
22
16
25
24
17
20


TN (Lg/L)
633
683
780
747
767
840
750
623
1120
1000
863
847
804


CHL (Ig/L)
4
7.7
3.3
5.7
8.7
20.7
12.7
6.7
11.3
7.3
3.3
4.3


SECCHI (ft)
5.7
6.3
5.3
5
4.8
4.7
4.2
4.8
3
3.3
5.5
4.9











Poinsett (Brevard County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 28020'23.7", Longitude 8050'10.4"

Period of record: 24 sampling dates; 2/18/93 to 11/21/08

Surface Area (Shafer et al. 1986): 4334 acres / 1754 hectares

Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10)

Geologic formation (Brooks 1981):
The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation

Physiographic region (Brooks 1981):
The lake lies in the St John's Wet Prairie division of the Eastern Flatwoods District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 4 sampling dates:


pH
Conductance (iS/cm @ 25 C)
Chloride (mg/L)


7.7
785
204.3


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 24 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
39
1043
2.3
0.5


Average
117
2229
21.5


Maximum
355.3
4543.3
76.3
3.5


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/23/08
2/28/08
3/21/08
4/22/08
5/22/08
6/24/08
7/22/08
8/26/08
9/17/08
10/16/08
11/21/08
2008 Average


TP (gg/L)
83
88
119
49
93
48
91
147
233
147


110


TN (Lg/L)
2433
2507
3407
1473
2190
1437
1413
1680
1590
1613


1974


CHL (Ig/L)
12.3
27
59.7
6.7
29
7


SECCHI (ft)
1.2
0.9
0.8
2.3
1.2











Trafford (Collier County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 26o25'18.95", Longitude 8129'36.47"

Period of record: 21 sampling dates; 5/15/01 to 12/13/08

Surface Area (Shafer et al. 1986): 1494 acres / 605 hectares

Lake Region (Griffith et al. 1997): Immokalee Rise (75-37)

Geologic formation (Brooks 1981):
The geology is dominated plastic and shell deposits of the Fort Thompson Group Formation

Physiographic region (Brooks 1981):
The lake lies in the Corkscrew Swamp division of the Southwestern Flatwoods District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 3 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


110.8
48


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 21 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
68
1930
16


Average
198
3224
44


Maximum
505
5563.3
78
2


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/17/08
2/18/08
3/17/08
4/16/08
5/14/08
6/17/08
7/15/08
8/14/08
9/18/08
10/16/08
11/13/08
12/13/08
2008 Average


TP (gg/L)
127
103
110
111
122
90
95
414
505
477
440
406


TN (Lg/L)
4710
3670
3630
3683
4367
3627
3177
3807
2053
1930
1997
2647
3275


CHL (Ig/L)
55.7
40


SECCHI (ft)
1
1.3












Talquin (Gadsden County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 30024'54.7", Longitude 8437'13.4"

Period of record: 47 sampling dates; 1/6/92 to 12/7/08

Surface Area (Shafer et al. 1986): 8850 acres / 3582 hectares

Lake Region (Griffith et al. 1997): Tifton/Tallahassee Uplands (65-04)

Geologic formation (Brooks 1981):
The geology is dominated by clayey sand and clay with sandy to clayey limestone of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Quincy Hills division of the Tifton Uplands District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 7 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 47 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)



2008 Florida LAKEWATCH Data


Minimum


Average
57
845
36.8
2.9


Maximum
97
1390
84
3.9


Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/7/08
2/15/08
3/16/08
4/6/08
6/1/08
7/6/08
8/3/08
9/1/08
10/4/08
11/9/08
12/7/08
2008 Average


TP (gg/L)
53
75
86
75
72
57
45
97
87
65
67


TN ([L/L)
650
1180
1390
1200
1293
1080
973
1160
1267
1117
1113
1129


CHL (Ig/L)
18.7
43
17.3
22.7
44
51.7
36.7
6
58.3
43.3
15.7


SECCHI (ft)
3.2
2.6
1.4
2.5
2.3
2.8
3.3
1.7
2.5
2.3
2.2











Dead (Gulf County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 3008'20.97", Longitude 85010'44.68"

Period of record: 4 sampling dates; 5/24/07 to 10/15/08

Surface Area (Shafer et al. 1986): 3655 acre / 1479 hectare

Lake Region (Griffith et al. 1997): Gulf Coast Lowlands (75-01)

Geologic formation (Brooks 1981):
The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene

Physiographic region (Brooks 1981):
The lake lies in the Coastal Strip division of the Apalachicola Delta District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 2 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 4 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
11
593
2.5


Average
20
736
9.2


Maximum
36
895
14
4.7


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
7/31/08
9/25/08
10/15/08
2008 Average


TP (1g/L)
18


TN ([L/L)
810
895
647
784


CHL (Ig/L)
11


SECCHI (ft)
4.2











Istokpoga (Highlands County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 27020'24.66", Longitude 81016'11.94"

Period of record: 155 sampling dates; 2/24/96 to 12/17/08

Surface Area (LAKEWATCH): 30116.54 acres / 12188 hectares

Lake Region (Griffith et al. 1997): Kissimmee/Okeechobee Lowland (75-35)

Geologic formation (Brooks 1981):
The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene

Physiographic region (Brooks 1981):
The lake lies in the Istokpoga Prairie division of the Eastern Flatwoods District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 5 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 155 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)



2008 Florida LAKEWATCH Data


Minimum


Average
56
1330
38.6
2.6


Maximum
107.3
2586.7
90.7
6.7


Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/23/08
2/24/08
3/27/08
4/14/08
5/17/08
6/20/08
7/25/08
8/25/08
9/20/08
10/23/08
11/21/08
12/17/08
2008 Average


TP (gg/L)
40
32
40
44
50
40
46
44
55
56
51
50


TN ([g/L)
1170
1143
1237
1360
1443
1507
1420
1220
1753
1633
1463
1400
1396


CHL (Ig/L)
27.3
22.3
21
27
23.7


SECCHI (ft)
2.8
2.8
3.2
2.8
2.3












Istokpoga North (Highlands County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 27025'2.4", Longitude 81018'39"

Period of record: 137 sampling dates; 2/10/96 to 12/16/08

Surface Area (LAKEWATCH): 30116.54 acres / 12188 hectares

Lake Region (Griffith et al. 1997): Kissimmee/Okeechobee Lowland (75-35)

Geologic formation (Brooks 1981):
The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene

Physiographic region (Brooks 1981):
The lake lies in the Istokpoga Prairie division of the Eastern Flatwoods District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 2 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 137 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)



2008 Florida LAKEWATCH Data


Minimum


Average
72
1327
43.6
1.9


Maximum
215.7
2113.3
110.3
3.9


Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/14/08
2/15/08
3/13/08
4/17/08
5/13/08
6/14/08
7/15/08
8/14/08
9/11/08
10/15/08
11/14/08
12/16/08
2008 Average


TP (gg/L)
46
55
62
60
65
51
68
69
126
86
56
60


TN ([L/L)
1467
1477
1630
1563
1707
1590
1500
1467
1703
1530
1253
1333
1518


CHL (Ig/L)
43.3
54.3
53.7
50
66
50
43.7
44.3
45.3
77.7
51.3
49


SECCHI (ft)
1.9
1.8
1.4
1.6
1.2
1.5
1.6
1.5
1
1.1
1.6
1.5











Josephine Center (Highlands County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 27023'37.32", Longitude 8126'45.51"

Period of record: 145 sampling dates; 3/16/96 to 12/26/08

Surface Area (LAKEWATCH): 1433 acre / 580 hectare (whole lake area)

Lake Region (Griffith et al. 1997): Lake Wales Ridge Transition (75-34)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene

Physiographic region (Brooks 1981):
The lake lies in the Eastern Complex of the Central Ridge subdivision of the Lake Wales Ridge division of the Central Lake
District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 5 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 145 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
32
523
8


Average
68
1036
24.8
1.7


Maximum
162
1493.3
57.7
6.8


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/11/08
2/23/08
3/27/08
4/26/08
5/28/08
6/24/08
7/29/08
8/29/08
9/15/08
10/24/08
11/14/08
12/26/08
2008 Average


TP (pg/L)
47
60
76
60
79
72
89
104
77
74
62
56


TN (g/L)
1050
1083
1387
973
1467
1440
1170
1143
1163
1300
890
897
1164


CHL (Ig/L)
26.7
33.7
51.7
32.7
38


SECCHI (ft)
1.5
1.5
1.5
1.5
1.5












Josephine East (Highlands County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 27023'37.26", Longitude 81025'27.36"

Period of record: 135 sampling dates; 5/9/95 to 12/17/08

Surface Area (LAKEWATCH): 1433 acre / 580 hectare (whole lake area)

Lake Region (Griffith et al. 1997): Lake Wales Ridge Transition (75-34)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene

Physiographic region (Brooks 1981):
The lake lies in the Eastern Complex of the Central Ridge subdivision of the Lake Wales Ridge division of the Central Lake
District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 5 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 135 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
22
623
13.7


Average
49
987
34.9
2.3


Maximum
127.7
1490
104
4.7


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, pg/L), chlorophyll (CHL, pg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
2/15/08
3/13/08
4/17/08
7/16/08
9/26/08
10/17/08
11/24/08
12/17/08
2008 Average


TP (gg/L)
43
44
46
44
42
43
44
39
43


TN ([g/L)
867
810
1070
837
1007
807
877
733
876


CHL (Ig/L)
24.7
22
44.7
22
31.7
40.7
32
30.7


SECCHI (ft)
1.8
1.8
1.3
1.6
1.9
1.6
1.4
1.6












Josephine West (Highlands County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 27024'9.61", Longitude 81027'7.43"

Period of record: 147 sampling dates; 3/16/96 to 12/26/08

Surface Area (LAKEWATCH): 1433 acre / 580 hectare (whole lake area)

Lake Region (Griffith et al. 1997): Lake Wales Ridge Transition (75-34)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene

Physiographic region (Brooks 1981):
The lake lies in the Eastern Complex of the Central Ridge subdivision of the Lake Wales Ridge division of the Central Lake
District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 5 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 147 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
47
665
8


Average
102
1063
22.5


Maximum
206.3
1596.7
94
2.5


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, pg/L), chlorophyll (CHL, pg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/11/08
2/23/08
3/27/08
4/26/08
5/28/08
6/24/08
7/29/08
8/29/08
9/15/08
10/24/08
11/14/08
12/26/08
2008 Average


TP (gg/L)
47
62
68
58
76
65
57
158
133
107
90
79


TN ([g/L)
833
797
930
665
1127
877
1063
1310
1213
1277
913
850
988


CHL (Ig/L)
9
13
17
13.3
20.7
23.3
21.7
22.3
17.3
16.7
12.3
12


SECCHI (ft)
2.5
1.7
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5











June (Highlands County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 27016'59.76", Longitude 8123'54.18"

Period of record: 161 sampling dates; 4/22/94 to 12/15/08

Surface Area (LAKEWATCH): 5724 acres / 2317 hectares

Lake Region (Griffith et al. 1997): Southern Lake Wales Ridge (75-33)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene

Physiographic region (Brooks 1981):
The lake lies in the Eastern Complex of the Central Ridge subdivision of the Lake Wales Ridge division of the Central Lake
District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 7 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 161 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
5
293
3
2.3


Average
13
560
10.1
6.9


Maximum
25
920
25
12.1


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/10/08
2/18/08
3/19/08
4/12/08
6/13/08
7/13/08
8/14/08
9/1/08
10/14/08
11/8/08
12/15/08
2008 Average


TP (gg/L)
11
13
16
14
10
11
14
11
16
14
17


TN (g/L)
483
503
517
510
537
400
520
620
457
293
577
492


CHL (Ig/L)
6
9.3
7.7
7
5.7
7
13.7
14.3


SECCHI (ft)
7.6
6.2
5
6.9
8.4
8.5
6.5
2.3











Wilson (Hillsborough County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 2808'46.5", Longitude 8229'12.6"

Period of record: 89 sampling dates; 2/21/93 to 10/11/08

Surface Area (LAKEWATCH): 62 acres / 25 hectares

Lake Region (Griffith et al. 1997): Land-o-Lakes (75-24)

Geologic formation (Brooks 1981):
The geology is dominated by argillaceous to sandy impure limestone of the Tampa Formation

Physiographic region (Brooks 1981):
The lake lies in the Land-o-Lakes subdivision of the Tampa Plain division of the Ocala Uplift District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 3 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 89 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
8
560
3.7


Average
18
791
9.8
6.8


Maximum
32
1156.7
32.3
10.7


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
7/30/08
10/11/08
2008 Average


TP (pg/L)
20


TN (Lg/L)
713
720
717


CHL (Ig/L)
12.7


SECCHI (ft)
6.4












Farm 13 (Indian River County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 27047'20.4", Longitude 8043'15.66"

Period of record: 91 sampling dates; 1/30/01 to 11/26/08

Surface Area : acre / hectare

Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10)

Geologic formation (Brooks 1981):
The geology is dominated plastic and shell deposits of the Fort Thompson Group Formation

Physiographic region (Brooks 1981):
The lake lies in the Upper St Johns Karst division of the Eastern Flatwoods District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 2 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


8.0
855
157.5


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


126.5
76


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 91 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
38
1140
8.3
0.9


Average
142
1779


Maximum
537
3230
189.3
5


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/23/08
2/29/08
3/26/08
4/22/08
5/23/08
6/25/08
7/21/08
8/28/08
9/18/08
10/16/08
11/26/08
2008 Average


TP (pg/L)
87
89
96
78
84
96
87
210
537
435
373
198


TN (Lg/L)
2030
2013
2213
1937
1840
2047
1867
1697
1650
1877
1743
1901


CHL (Ig/L)
35.3
31.3
28
28
37
56
51
34.7
18


SECCHI (ft)
1.4
1.4
1.2
2
2.5
2.2
2
2.3
2












Stick Marsh (Indian River County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 27047'56.52", Longitude 80o42'32.58"

Period of record: 91 sampling dates; 1/30/01 to 11/26/08

Surface Area (LAKEWATCH): 2379 acres / 963 hectares

Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10)

Geologic formation (Brooks 1981):
The geology is dominated plastic and shell deposits of the Fort Thompson Group Formation

Physiographic region (Brooks 1981):
The lake lies in the Upper St Johns Karst division of the Eastern Flatwoods District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 2 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


161.3


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


129.5
76


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 91 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
49
1243
7.3
0.7


Average
133
1778
48.3
2.2


Maximum
482
2976.7
151.3
4.5


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/23/08
2/29/08
3/26/08
4/22/08
5/23/08
6/25/08
7/21/08
8/28/08
9/18/08
10/16/08
11/26/08
2008 Average


TP (gg/L)
94
88
92
69
81
97
108
161
482
394
368


TN (Lg/L)
2080
1923
2193
1623
1797
2090
1973
1663
1623
1677
1620
1842


CHL (Ig/L)
34
40.3
33.3
20.3
31.7
53.7
61.3
44.7
37
13
14.7


SECCHI (ft)
1.4
1.7
1.3
2.6
2.2
1.7
2
1.8
2
1.9
1.6











Cherry (Lake County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 28035'47.9", Longitude 81o48'53.7"

Period of record: 87 sampling dates; 5/9/90 to 9/28/08

Surface Area (LAKEWATCH): 613 acres / 248 hectares

Lake Region (Griffith et al. 1997): Clermont Uplands (75-19)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Groveland Karst division of the Central Lake District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 13 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 87 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)



2008 Florida LAKEWATCH Data


Minimum


Average
15
929


Maximum
41.3
1940
25.7
14.5


Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/30/08
2/25/08
3/29/08
4/27/08
7/30/08
8/29/08
9/28/08
2008 Average


TP (gg/L)
15
13
13
14
18
14
13


TN (Lg/L)
1120
970
1063
827
1027
1063
947
1002


CHL (Ig/L)
6.7
5
4.7


SECCHI (ft)
3.5
3.8
4.4












Dorr (Lake County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 2900.0E+01'12.18", Longitude 81o36'44.52"

Period of record: 178 sampling dates; 1/30/90 to 12/16/08

Surface Area (LAKEWATCH): 1877 acres / 759 hectares

Lake Region (Griffith et al. 1997): Eastern Flatlands (75-10)

Geologic formation (Brooks 1981):
The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation

Physiographic region (Brooks 1981):
The lake lies in the St John's Offset division and the Mount Dora Ridge subdivision of the Apopka Upland division of the Centra


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 10 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 178 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
11
310


Average
18
482
11
2.8


Maximum
32.3
796.7
29.3
6.7


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/23/08
2/28/08
3/20/08
4/29/08
5/28/08
6/19/08
7/30/08
8/29/08
9/26/08
10/29/08
11/28/08
12/16/08
2008 Average


TP (gg/L)
19
21
21
19
26
29
26
24
32
27
30
28
25


TN (Lg/L)
537
590
637
797
563
617
667
670
580
657
600
613
627


CHL (Ig/L)
10
9
9
8.3
11.3
23
16.7
15
20
10.3
7.7
13
12.8


SECCHI (ft)
3.5
2.8
2
2
1.7
3.5
2.5
2.5
2.1
1.7
2
1.9
2.4












Grasshopper (Lake County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 2907'59.76", Longitude 8137'1.02"

Period of record: 222 sampling dates; 1/30/90 to 12/16/08

Surface Area (LAKEWATCH): 197 acres / 47 hectares

Lake Region (Griffith et al. 1997): Ocala Scrub (75-09)

Geologic formation (Brooks 1981):
The geology is dominated by sand dunes and well sorted fine sand of the Pleistocene

Physiographic region (Brooks 1981):
The lake lies in the Ocala Scrub division of the Central Lake District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 9 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 222 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
0.0E+01
43
1


Average
6
464
2.8
7.3


Maximum
14.7
1760
14.7
16.5


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/23/08
2/28/08
3/21/08
4/30/08
5/28/08
6/19/08
7/29/08
8/29/08
9/26/08
10/30/08
11/28/08
12/16/08
2008 Average


TP (gg/L)
7
5
4
4
4
3
4
9
8
11
7
8


TN ([L/L)
260
317
300
217
183
157
200
353
660
837
880
897
438


CHL (Ig/L)
2
2
1.3
1.7
1.3
1.7
2.3
4.3
5.3
2
1.7
2


SECCHI (ft)
13.5






7.7
3.5
3.1
2.9
3.1












Griffin (Lake County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 28050'31.62", Longitude 8151'5.1"

Period of record: 128 sampling dates; 5/8/90 to 12/15/08

Surface Area (Shafer et al. 1986): 16505 acres / 6679 hectares

Lake Region (Griffith et al. 1997): Central Valley (75-08)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Central Lakes division of the Central Lake District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 7 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


102.1
23


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 128 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
27
1510
11
0.5


Average
65
3027
138.2


Maximum
126.7
5463.3
384


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/23/08
2/25/08
3/25/08
4/23/08
5/28/08
6/23/08
8/26/08
9/18/08
10/21/08
11/25/08
12/15/08
2008 Average


TP (pg/L)
44
47
56
50
43
40
38
35
43
36
42


TN (Lg/L)
2847
3010
2953
2783
2630
2923
2547
2557
2687
2537
2973
2768


CHL (Ig/L)
52
55.7
83
59.7
74
94
87.7
84.3
95.3
53.7
34.3


SECCHI (ft)
2
1.8
1.6
1.8
1.3
1.5
1.6
1.5
1.6
1.8
2











Griffin North (Lake County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 28053'1.32", Longitude 81 50'27"

Period of record: 79 sampling dates; 5/18/95 to 3/16/08

Surface Area .: 16505 acres / 6679 hectares (whole lake area)

Lake Region (Griffith et al. 1997): Central Valley (75-08)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Central Lakes division of the Central Lake District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from. sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 79 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)



2008 Florida LAKEWATCH Data


Minimum


Average
71


Maximum
134
5716.7
401.3
5


Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
2/6/08
3/16/08
2008 Average


TP (pg/L)
46


TN (Lg/L)
3033
2593
2813


CHL (Ig/L)
42.9


SECCHI (ft)
1.7












Griffin West (Lake County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 28051'44.5", Longitude 81o53'24.4"

Period of record: 65 sampling dates; 6/21/03 to 12/10/08

Surface Area : 16505 acres / 6679 hectares (whole lake area)

Lake Region (Griffith et al. 1997): Central Valley (75-08)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Central Lakes division of the Central Lake District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from. sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 65 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)


Minimum
32
1217
10


Average
64
1850
55.7
2.1


Maximum
124
2810
234
3.5


2008 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/27/08
2/24/08
3/29/08
4/29/08
5/25/08
6/28/08
7/13/08
8/27/08
9/13/08
10/18/08
11/15/08
12/10/08
2008 Average


TP (gg/L)
32
37
45
47
54
47
41
55
59
52
51


47


TN (Lg/L)
1600
1750
1827
1810
1967
1750
1607
1217
1927
2075
1780


1755


CHL (Ig/L)
18.7
24
46
40
49.7
40.3
45.7
42
44.7


SECCHI (ft)
2.6
2.4
2.2
2.2
2.2
2.8
2.3
1.5
1.5












Harris (Lake County)
LAKEWATCH Water Chemistry Summary

Location: Latitude 28048'37.2", Longitude 8147'13.1"

Period of record: 198 sampling dates; 1/20/90 to 12/19/08

Surface Area (Shafer et al. 1986): 13788 acres / 5580 hectares

Lake Region (Griffith et al. 1997): Central Valley (75-08)

Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation

Physiographic region (Brooks 1981):
The lake lies in the Central Lakes division of the Central Lake District


Supplemental, unpublished water chemistry data, University of Florida.
Data reported are means from 10 sampling dates:


pH
Conductance (gS/cm @ 25 C)
Chloride (mg/L)


Total alkalinity (mg/L as CaCO3)
Color (Pt-Co units)


Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 198 months sampled:


Long-term total phosphorus concentrations (gg/L)
Long-term total nitrogen concentrations (gg/L)
Long-term total chlorophyll concentrations (gg/L)
Long-term Secchi depth (ft)



2008 Florida LAKEWATCH Data


Minimum


Average
35
1780
58.4
2.1


Maximum
69.7
2326.7
121.3
9.5


Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, gg/L),
total nitrogen (TN, gg/L), chlorophyll (CHL, gg/L) and Secchi depth (SECCHI, ft) during 2008:


Date
1/14/08
2/28/08
3/26/08
4/25/08
6/20/08
7/11/08
8/12/08
9/26/08
10/23/08
11/17/08
12/19/08
2008 Average


TP (pg/L)
39
50
51
52
37
38
35
39
46
46
38


TN (Lg/L)
1770
1897
2113
2323
1873
1833
1803
1947
2163
1930
1875
1957


CHL (Ig/L)
33.7
43
39.3
58.3
47.7
41.3
41
48
49.3
48.3
27.7


SECCHI (ft)
2.7
2.1
2.5
2.3
1.8
1.5
2.5
1.9
2.3
2
2




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