Citation
Characteristics of seasonal high water line change along the sandy beaches of the state of Florida : an atlas

Material Information

Title:
Characteristics of seasonal high water line change along the sandy beaches of the state of Florida : an atlas
Series Title:
Characteristics of seasonal high water line change along the sandy beaches of the state of Florida : an atlas
Creator:
Malakar, Subarna
Place of Publication:
Gainesville, Fla.
Publisher:
Coastal & Oceanographic Engineering Dept. of Civil & Coastal Engineering, University of Florida
Language:
English

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Source Institution:
University of Florida
Holding Location:
University of Florida
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All applicable rights reserved by the source institution and holding location.

Full Text
UFL/COEL-2001/001

CHARACTERISTICS OF SEASONAL HIGH WATER LINE CHANGE
ALONG THE SANDY BEACHES
OF THE STATE OF FLORIDA: AN ATLAS
January 2001
Subarna Malakar Robert Dean
Sponsored by:
Office of Beaches and Coastal Systems Department of Environmental Protection State of Florida
Department of Civil and Coastal Engineering University of Florida Gainesville, Florida 32611




TABLE OF CONTENTS
PAGE
LIST OF FIGURES --------------------------------------------------- iv
LIST OF TABLES ---------------------------------------------------- vi
I INTRODUCTION ------------------------------------------------- I
11 DESCRIPTION OF THE SEASONAL HIGH WATER LINE DATABASE ------------ I
III ANALYSIS PROCEDURES ----------------------------------------- 6
Time Periods Analyzed ---------------------------------------- 6
Analysis Methods and Description of Results -------------------------- 7
Determination of SHWL Trend ---------------------------- 7
Quantification of SHWL Variability About the Trend Line ------------ 8
IV RESULTS ------------------------------------------------------ 8
East Coast ------------------------------------------------ 13
West Panhandle Coast ----------------------------------------- 13
West Coast ------------------------------------------------ 14
V DESCRIPTION OF TABLE ---------------------------------------- 14
VI AN APPLICATION OF THE SHWL DATABASE ------------------------ 15
VII FINAL COMMENT REGARDING USE OF THIS ATLAS ----------------- 16
VIII ACKNOWLEDGEMENTS ----------------------------------------- 16
IX REFERENCES -------------------------------------------------- 17
Continued on Next Page ...




APPENDIX
PAGE
SHWL CHANGE CHARACTERISTICS FOR NASSAU COUNTY --------------- NAS-1
SHWL CHANGE CHARACTERISTICS FOR DUVAL COUNTY ---------------- DUV-1
SHWL CHANGE CHARACTERISTICS FOR ST. JOHNS COUNTY -------------- STJ-1
SHWL CHANGE CHARACTERISTICS FOR FLAGLER COUNTY -------------- FLA-1
SHWL CHANGE CHARACTERISTICS FOR VOLUSIA COUNTY -------------- VOL-1
SHWL CHANGE CHARACTERISTICS FOR BREVARD COUNTY -------------- BRE-1
SHWL CHANGE CHARACTERISTICS FOR INDIAN RIVER COUNTY ---------- IND-1
SHWL CHANGE CHARACTERISTICS FOR ST. LUCIE COUNTY -------------- STL-1
SHWL CHANGE CHARACTERISTICS FOR MARTIN COUNTY -------------- MAR-1
SHWL CHANGE CHARACTERISTICS FOR PALM BEACH COUNTY ---------- PAL-1
SHWL CHANGE CHARACTERISTICS FOR BROWARD COUNTY ------------ BRO-1
SHWL CHANGE CHARACTERISTICS FOR DADE COUNTY ------------------ DAD-1
SHWL CHANGE CHARACTERISTICS FOR ESCAMBIA COUNTY -------------- ESC-1
SHWL CHANGE CHARACTERISTICS FOR OKALOOSA COUNTY ------------ OKA-1
SHWL CHANGE CHARACTERISTICS FOR WALTON COUNTY -------------- WAL-1
SHWL CHANGE CHARACTERISTICS FOR BAY COUNTY ------------------ BAY-1
SHWL CHANGE CHARACTERISTICS FOR GULF COUNTY ------------------ GUL-1
SHWL CHANGE CHARACTERISTICS FOR FRANKLIN COUNTY------------- -FRA-1
SHWL CHANGE CHARACTERISTICS FOR PINELLAS COUNTY -------------- PIN-1
SHWL CHANGE CHARACTERISTICS FOR MANATEE COUNTY --------------MAN-1
SHWL CHANGE CHARACTERISTICS FOR SARASOTA COUNTY ------------ SAR-1
SHWL CHANGE CHARACTERISTICS FOR CHARLOTTE COUNTY----------- -CHA-1
SHWL CHANGE CHARACTERISTICS FOR LEE COUNTY ------------------ LEE-1
SHWL CHANGE CHARACTERISTICS FOR COLLIER COUNTY ----------------COL-1




LIST OF FIGURES

FIGURES PG

1 A Plot of the Seasonal High Water Elevations, Above NGVD, for the East and West
Coasts of Florida-------------------------------------------------- 2
2 Number of Stations for Which SHWL Position Data are Available Along, Florida's
Coastal Sandy Beach Counties---------------------------------------- 3
3a Available Survey Dates for All Monuments Along the 12 East Coastal Counties of
Florida--------------------------------------------------------- 5
3b Available Survey Dates for All Monuments Along the 6 West Panhandle Coastal
Counties of Florida------------------------------------------------ 5
3c Available Survey Dates for All Monuments Along the 6 West Coastal Counties of
Florida--------------------------------------------------------- 5
4 SHWL Position Data With the Trend Line for Monument R-23 in Nassau County.
Also Showing Typical Deviation From Trend Line ---------------------------6
5 Beach Profile at Nassau County Monument R-023 Surveyed on July 2 81h, 1998
Showing the Dune Location and the Intercepts for SHWL, MHWL and MLWL
Relative to NGVD------------------------------------------------- 7
6 SHWL Change Rates and SHWL Deviations From Trend Line. Example for Nassau
County--------------------------------------------------------- 9
7 Predicted Values of SHWL Recession for High Frequency Return Periods for the Total
Standard Deviation Value of 12.9 Feet for Monument R-023 in Nassau County. This is
an Example of anApplication of SHWL Database---------------------------16
Continued on Next Page..

PAGE




LIST OF FIGURES

FIGURES PAGE
NAS-1 Annual SHWL Rates With Deviations Along the Coastline of Nassau County - NAS-2 DUV-1 Annual SHWL Rates With Deviations Along the Coastline of Duval County - DUV-2 STJ-1 Annual SHWL Rates With Deviations Along the Coastline of St. Johns County STJ-2
FLA-1 Annual SHWL Rates With Deviations Along the Coastline of Flagler County - FLA-2 VOL-1 Annual SHWL Rates With Deviations Along the Coastline of Volusia County - VOL-2 BRE-1 Annual SHWL Rates With Deviations Along the Coastline of Brevard County - BRE-2
IND-1 Annual SHWL Rates With Deviations Along the Coastline of Indian River County ---- IND-2 STL-1 Annual SHWL Rates With Deviations Along the Coastline of St. Lucie County- STL-2 MAR-1 Annual SHWL Rates With Deviations Along the Coastline of Martin County - MAR-2
PAL-1 Annual SHWL Rates With Deviations Along the Coastline of Palm Beach County - - PAL-2 BRO-1 Annual SHWL Rates With Deviations Along the Coastline of Broward County BRO-2 DAD-1 Annual SHWL Rates With Deviations Along the Coastline of Dade County - - DAD-2
ESC-1 I Annual SHWL Rates With Deviations Along the Coastline of Escambia County------ ESC-2 OKA-1 Annual SHWL Rates With Deviations Along the Coastline of Okaloosa County - - - OKA-2 WAL-1 Annual SHWL Rates With Deviations Along the Coastline of Walton County -------- WAL-2
BAY-1 Annual SHWL Rates With Deviations Along the Coastline of Bay County ---------- BAY-2
GUL-1 Annual SHWL Rates With Deviations Along the Coastline of Gulf County --------- GUL-2
FRA-1 Annual SHWL Rates With Deviations Along the Coastline of Franklin County ------- FRA-2
PIN-1 Annual SHWL Rates With Deviations Along the Coastline of Pinellas County ------- PIN-2 MAN-1 Annual SHWL Rates With Deviations Along the Coastline of Manatee County- - - - MAN-2 SAR-1 Annual SHWL Rates With Deviations Along the Coastline of Sarasota County ------ SAR-2
CHA-1 Annual SHWL Rates With Deviations Along the Coastline of Charlotte County ------ CHA-2 LEE-1 Annual SHWL Rates With Deviations Along the Coastline of Lee County ---------- LEE-2
COL-1 Annual SHWL Rates With Deviations Along the Coastline of Collier County -------- COL-2




LIST OF TABLES
TABLES PAGE
1 Dates for Which SHWL Characteristics Were Analyzed for the Following Coastal
Counties --------------------------------------------------------4
2 Sample Pages of the Tabulation of SHWL Change Rates and Deviations From the
Trend Line for Each FDEP Monuments in Nassau County ---------------------10
3a Summary of Countywide Average SHWL and MHWL Change Characteristics for the
Twelve Coastal Counties on the East Coast of Florida -----------------------12
3b Summary of Countywide Average SHWL and MHWL Change Characteristics for the
Twelve Coastal Counties on the West Coast of Florida ----------------------13
4 Values of the Factor FTR for Various Return Periods, TR ---------------------15
5 Predicted Values of SHWL Recession for Various Return Periods, TR for Nassau
County Monument R-023 ------------------------------------------15




CHARACTERISTICS OF THE SEASONAL HIGH WATER LINE
CHANGE ALONG THE SANDY BEACHES OF THE STATE OF FLORIDA: AN ATLAS
I. INTRODUCTION
This report presents the results of an analysis of the Seasonal High Water Line (SHWL) position database computed from the beach profile data surveyed by the Office of Beaches and Coastal Systems (OBCS) of the Florida Department of Environmental Protection (FDEP) over a period extending from the 1970's to the 1999's. Although the shoreline positions are based on the location of the Mean High Water (MHW), the reference elevation used by OBCS of the FDEP for some regulatory purposes is the so-called Seasonal High Water (SHW) elevation, which is defined as an elevation of 1.5 times the mean tidal range above the MHW elevation. The rationale for considering SHW elevation rather than the MHW elevation is that the SHW elevation is higher than MHW elevation resulting in the SHW position being located further inland than the MHW location on a beach profile, such that the changes in SHW positions would correspond more to the long term shoreline change rate and less to the individual storms and seasonal fluctuations. A graph of the SHW elevation for the 24 coastal counties of Florida is presented in Figure 1.
The beach profile data are available for locations spaced approximately 1000 feet apart along the shorelines of the 24 coastal counties of the predominantly sandy beaches of the State of Florida. Data from approximately 3624 FDEP monuments corresponding to about 805 miles are analyzed and the results of the analysis presented in formats useful to a regulator, to a prospective homebuyer, to a real estate agent, to an engineer or scientist. The analysis methods used for this report are similar to those presented in the report, "CHARACTERISTICS OF SHORELINE CHANGE ALONG THE SANDY BEACHES OF THE STATE OF FLORIDA: AN ATLAS". Sample results are described in the following sections.
II. DESCRIPTION OF THE SEASONAL HIGH WATER LINE POSITION DATABASE
As noted above, the analyzed results presented in this report are based on the multiple beach profiles surveyed in the field by the OBCS of the FDEP. This program of surveying beach and offshore profiles was initiated when the Coastal Construction Control Line (CCCL) program (known as Setback Line program then) was established by the Florida Legislature in 1971. Beach and offshore profiles were surveyed on a county-by-county basis for the establishment or re-establishment of the CCCL on a county-by-county basis; however the regulatory mission of the OBCS of the FDEP has been redefined and expanded since then. As a result, OBCS surveys beach and offshore profiles wherever or whenever it is warranted to do so; for example, in a beach area of the shoreline where critical beach erosion is indicated or before and after a storm event in a selected study area, etc. As a consequence,




Figure 1. A Plot of the Seasonal High Water Elevations, Above NGVD, for the
East and the West Coasts of Florida.
the number of beach profiles available for a location can vary considerably for the analysis of SHWL data.
A physical marker embedded in the ground is used as a reference location to survey the beach profiles; both the horizontal and the vertical controls of the top surface of the physical marker are established relative to the Florida State Plane Coordinates and NGVD of 1929, respectively. This physical marker is also referred to as a monument that has a unique monument identification label in the county. The original FDEP monuments are generally located behind the dune systems for the protection of the monuments against physical disturbances and each of these FDEP monuments are placed approximately 1000 feet apart alongshore wherever physically possible; it should be noted however that there are some locations along the beach in some of the 24 coastal counties where it was extremely difficult to locate the monuments 1000 feet apart so that, in such cases the distances between the monuments can be somewhat more or less than the 1000 feet. The cross-sectional beach profiles are surveyed from at least behind the primary dune systems to at least the wading depth of 5 feet at a profile survey azimuth that is established in the first survey at the

SHWL in Ft

Io$&%-'




monument, such that the survey azimuth is approximately perpendicular to the local shoreline. The positions of these monuments are depicted in a county-by-county series of CCCL aerial photographs prepared by OBCS for the 24 predominantly sandy beach counties, consisting of twelve counties on the east coast of Florida, six counties on the west Panhandle coast of Florida and six counties on the lower west coast of Florida. See Figure 2 for a map of Florida with the number of monuments indicated for each of the 24 coastal counties for which the SHWL change characteristics are analyzed.

DUVAL (80)

ST.JOHNS (209)
-\ FLAGLER (100)

VOLUSIA (272)

,219)

MANATEE (67) SARASOTA (183)
CHARLOTTE (68)

LEE (239)

COLLIER (148)

INDIAN RIVER (119) ST.LUCIE (115) MARrIN (127)
PALM BEACH
(227)

b ROWARD
(128)
DADE (112)

Figure 2. Number of Stations for Which SHWL Position Data are Available Along Florida's Coastal Sandy Beach Counties.
The number of times the SHWL positions that are computed for each monument range from 2 to 14 for the profiles surveyed between 1971 and 1999 by OBCS. Table 1 presents the range in years between which field surveyed beach profiles were acquired for each of the 24 coastal counties in Florida by OBCS. Figures 3a, 3b and 3c show survey dates available for each monument for the 24 coastal counties in Florida. It should be noted that the period for which surveys are available is also a period during which considerable beach nourishment has occurred at some localities. Thus, at these localities, the SHWL characteristics will include the nourishment effects.




Table 1

Dates for Which SHWL Characteristics Were Analyzed for the Following Coastal Counties.

County: Beach Profile Survey Dates
Nassau 1974-1999
Duval 1974-1999
E St. Johns 1972-1999
A Flagler 1972-1999
S Volusia 1972-1997
T
T Brevard 1972-1999
C
0 Indian River 1972-1997
A St. Lucie 1972-1997
S
T Martin 1971-1999
Palm Beach 1974-1996
Broward 1975-1998
Dade 1980-1998
W P
E A Escambia 1974-1998
s N Okaloosa 1973-1998
T H
A Walton 1973-1998
N
D Bay 1971-1999
L Gulf 1973-1998
E Franklin 1973-1998
W Pinellas 1974-1999
E
E Manatee 1974-1998
S
T Sarasota 1974-1994
Charlotte 1974-1998
COAST Lee 1974-1994
Collier 1973-1988




U
U
~

Figure 3a. Available Survey Dates for All Monuments
Along the 12 East Coastal Counties of Florida.

2000
1990
1980
S19702
Figure 3b. A
C

availablee Survey Dates for All Figure monuments Along the 6 West Panhandle oastal Counties of Florida.

2000-

1 9 7 0 - LI
3c. Available Survey Dates for All Monuments
Along the 6 West Coastal Counties of Florida.

Figure 4 presents a typical set of SHWL position data. As has been noted above, the survey profile line along which the SHWL intercept is computed, is oriented approximately perpendicular to the beach and the SHWL position is referenced to the monument. In this example, the station is monument R-023 in Nassau County, the most northerly county on the east coast of Florida, and it is seen that there are 6 surveys available, with the earliest computed from the 1974 beach profile survey and the latest computed from the 1998 beach profile survey. There are two features of the data in Figure 4 that are significant to the results to be presented in this report. First it is seen that an advancing trend of SHWL change is evident. This trend is represented by a straight line that will be described in the next section. Secondly, there is significant variability about the trend line. Both the trend line of the data




2 5 0 . . .'.. . . . . .
.- , , I . , j , . i , . . ..Deviatio n i
,-- (Typical) ,
200
F .
1970 1980 1990 2000
Time in Years
Figure 4. SHWL Position Data With the Trend Line for Monument R-23 in
Nassau County. Also Showing Typical Deviation From Trend Line.
and the deviation of the data about the trend line are relevant to the OBCS regulatory responsibilities and to a general understanding of shoreline dynamics. The Seasonal High Water Elevation at monument R-023 in Nassau County is 11.89 feet as shown in. Figure 5. There are several possible explanations for the trend of SHWL positions and also for the fluctuations about this trend. The purpose here is to quantify the trend and variability of the SHWL changes and not to provide detailed discussions of their causes or interpretations; however, it is noted that storms can cause fluctuations as can seasonal effects and the trend can be due to natural causes (sea level rise, onshore/offshore sediment transport, etc), human related effects (jetties, channels, beach nourishment, etc) and errors in the data. The shoreline at monument R-023 in Nassau County has been nourished. The following section describes the analysis procedures applied to the data.
III. ANALYSIS PROCEDURES
Time Periods Analyzed
The beach profiles available for the 24 coastal counties of Florida from OBCS of FDEP spans a period from 1971 to 1999 in contrast to the MHWL position database which encompasses a period from mid-1800's to the 1990's for which the long-terrn and the short-term historical shoreline change characteristics study have been developed recently. The beach profile data are available for a maximum period of 28 years from which to compute the SHWL position change characteristics. The purpose of the analysis of the short-term data is to provide results, which may be more representative of the current trends although they may also correspond to the long-term historical shoreline change rates. As has been referred to earlier, Table 1 presents the data periods analyzed for each of the 24 counties.




2 0 l- . . ... . . i . . . . I . . . . I . . . ..i. . . . . i .
Dune
SHWL=MHW Elevation+ 1.5 x Mean Tidal Range 11.89 ft
V
10F
\MHWL 3.32 ft
MSWL (NGVD) 0.0 ft
> 0 \
v MLWL -2.39 ft
- 1 0 . . . .
-100
-100 0 100 200 300 400 500 600 700
Distance in Feet
Figure 5. Beach Profile at Nassau County Monument R-023 Surveyed on July 28th,
1998 Showing the Dune Location and the Intercepts for SHWL, MHWL,
MSWL and MLWL Relative to NGVD.
Analysis Methods and Description of Results
First, the SHW elevations for each monument location in the 24 coastal counties are computed, where SHW elevation is computed as elevation of 1.5 times the mean tidal range above the MHW elevation. As shown in Figure 1, the SHW elevation varies from 12.0 feet at the north end of Nassau County to 5.04 feet at the south end of Dade County for the east coast of Florida, from 4.41 feet at the north end of Pinellas County to 5.18 feet at the south end of Collier County, and from 3.08 feet at the west end of Escambia County to 5.11 feet at the east end of Franklin County. Tidal data provided by OBCS staff are used to compute the SHW elevations for the 24 coastal counties of Florida. Next, the SHWL intercept position is determined for each of the beach profiles at each of the monuments and for each survey in the 24 coastal counties of Florida. There are some beach profiles for which the SHWL intercept positions cannot be determined because the SHW elevations to be used for those beach profiles are higher than all of the beach profile elevations. The availability of multiple beach profiles surveyed for a given monument provides for the computation of the multiple SHWL intercept positions in the form of distances relative to the monument versus survey dates. These results represent the database used for the analysis of the SHWL change characteristics. For the time period analyzed, the trend and a measure of the variability around the trend line are determined.
Determination of SHWL Trend Formally, the trend line extracted from the data available at each monument is the best least squares fit to the available data within the period of time being analyzed. Referring to Figure 4, the shoreline trend is represented by a solid line for all of the data and represents a SHWL advancement (accretion) of 4.6 feet per year for this location. This result is based on all six data points available at this monument. At least two data points are necessary to carry out the method of least squares and there are some monuments in some of the 24 coastal counties where this criterion is not met even though there may be more than two beach profiles surveyed. One case, for




example, is when the SHW elevation is higher than the surveyed beach profile elevations so there is no SHWL intercept position to be determined for the monument; another case is that, although the SHWL database consists of SHWL data computed from recent ijeld surveyed beach profiles, that is more reliable than the historical shoreline change database, there is still a filter to remove "unreasonable" data points, such as, data points that are outside three standard deviations relative to the trend line using all the SHWL positions for the monument. These data are discarded. Thus it is possible if enough data points are removed, the total number of data points remaining could fall below the minimum two required to carry out the computation. The reason for this filter is to avoid computing unreasonable short-term trend lines that are inconsistent with the results computed for the neighboring monuments. The number of removed data points is less than 8.5% considering all the data for the 24 coastal counties.
Quantification of SHWL Variability About the Trend Line -The determination of the SHWL variability can be illustrated by referring to Figure 4. For each time at which data are available, the deviation from the data to the trend line is calculated. The variability is the root-mean-square of all the deviations within the time period for which the data are being analyzed. The deviations are a measure of the uncertainties to be expected in the projection of the trend lines in the future. As noted previously, in addition to actual SHWL. positions being determined from the beach profiles, the fluctuations could still include some unknown contribution due to errors in the data. A minimum of three data points is required for the determination of the variability, i.e. one standard deviation about the trend line. Thus, in the tabulations to be described, if the two or the three data points required to compute the trend line and the variability respectively are not met, then no results are provided for that monument.
IV. RESULTS
The results are presented on a county-by-county basis in both graphical and tabular forms. Figure 6 presents the graphical results of the analysis from 1974 to 1999 for Nassau County, which are representative of the short-term SHWL change trend. The solid SHWL trend line is provided adjacent to the shoreline map of the county on which the monuments are shown. The solid vertical bars through the SHWL trend line represents the magnitude of the deviations described earlier; the equidistant lengths of the bar about the SHWL trend line position correspond to one standard deviation. The deviations are also plotted as dashed lines on the same graph. Note the different vertical axes and the different scales used in the graph when examining the plots, especially when comparing one graph to another. Table 2 presents sample pages of the tabulations provided for Nassau County. The first column is the monument identification for the county; the second column is the SHWL change rate; the third column is the variability or one standard deviation and the fourth column is the number of SHWL data points available that were used in developing the results for the previous two columns. Selecting Monument R-23 (which can be seen by referring to Figure 6 to be located approximately 2.5 miles south of the Entrance to St. Mary's River), the SHWL rate of change is 4.6 feet per year. The deviation about the trend line is 12.9 feet. These results are based on all 6 data points. At this location, there has been beach nourishment during the 1974-1999




period encompassed. Again, the purpose here is to describe the characteristics of the SHWL change and not to interpret the results.
Tables 3a and 3b are summary tables of the average SHWL change characteristics on a county-by-county basis for the 24 coastal counties, which include the average short term shoreline (MHWL) change rates based only on all the field surveyed beach profiles acquired by OBCS.
SHWL Change Rate (ft/yr) Using (1974-1999) Data
0 0
Scale:
0 1 2 3 4
M iles 7.' l ' . l ' ' . I . '

R-10

- R-20

- R-70

Figure 6. SHWL Change Rates and SHWL Deviations From Trend Line.
Example for Nassau County.




Table 2
Sample Pages of the Tabulation of SHWL Change Rates and Deviations From the Trend Line for Each FDEP Monuments in Nassau County.

County: Nassau Using (1974-1999) Data

DEP
Monument ID
R-011 R-012 R-013 R-014 R-015
R-016 R-017 R-018 R-019 R-020
R-021 R-022 R-023 R-024 R-025
R-026 R-027 R-028 R-029 R-030
R-031 R-032 R-033 R-034 R-035
R-036 R-037 R-038 R-039 R-040
Continued on Next Page ...

SHWL Change Rate(ft/yr)
.3
7.8
-1.1
-3.5
1.6
1.5
.6
3.8
33.3 11.1
1.8
10.6
4.6 7.6 8.2
8.6
.8
.4
1.0
-4.4
1.9 7.6 4.7 3.1 3.2
3.8 4.6
.3
8.1
10.0

Std.Deviation No of Data
(ft) Points

19.4 67.9
49.5 52.4 8.7
2.6 52.3 39.2 92.0
102.3
9.7 34.8 12.9 20.6 28.0
32.6 2.4
2.6 25.0 25.3
6.8 26.4 30.5
.9
5.6
4.4 9.1 35.1 14.4 49.1




County: Nassau Using (1974-1999) Data

DEP
Monument-ID
R-041 R-042 R-043 R-044 R-045
R-046 R-047 R-048 R-049 R-050
R-051 R-052 R-053 R-054 R-055
R-056 R-057 R-058 R-059 R-060
R-061 R-062 R-063 R-064 R-065
R-066 R-067 R-068 R-069 R-070

SHWL Change Rate(ft/yr)
9.1 7.0 5.9 8.3 6.3
5.8
20.8 -6.0
5.6 3.4
-.6
-3.0
-2.4
4.1 -1.3
-.4
4.9 3.2 4.0 7.8
8.8 -4.7
7.3 6.7 5.9
3.8 11.4 4.9 -7.1
7.0

Std.Deviation No of Data
(ft) Points

32.4 29.5 25.7 22.8 26.7
32.0 103.0 71.9 20.8 12.2
42.5 58.8 72.1 49.6 69.8
72.2 21.4 15.1 9.3 74.7
58.3 76.5 67.5 73.7 72.0
58.1 69.6 81.8
12.6 110.5

Continued on Next Page ...




County: Nassau Using (1974-1999) Data

DEP SHWL Change Std.Deviation No of Data
Monument-ID Rate(ft/yr) (ft) Points

R-071 R-072 R-073 R-074 R-075
R-076 R-077 R-079

8.1
-8.1
4.4
7.0 2.3
-3.2
-2.5
4.2

79.8 8.7
51.4 47.9 53.6
8.3
50.5
79.6

Table 3a
Summary of Countywide Average SHWL and MHWL Change Characteristics for the Twelve Coastal Counties on the East Coast of Florida.
E Average Average Average Number Average Average Number
SSurvey SHWL SHW SHWL of Data MHWL MHW MHWL of Data
C Dates Change Rate Elevation Deviation Points Change Rate Elevation Deviation Points
T County (years) (ft/yr) (ft) (ft) for SHWL (ft/yr) (ft) (ft) for MHWL
C Nassau 1974-1999 5.29 11.65 42.02 71 3.23 3.2.4 48.21 72
0 Duval 1974-1999 6.40 10.9 47.55 76 5.97 2.99 57.02 80
St. Johns 1972-1999 1.71 9.83 14.34 200 0.20 2.64 19.72 207
T Flagler 1972-1999 0.27 8.94 7.11 55 -0.01 2.37 7.55 55
Volusia 1972-1997 0.34 8.30 11.75 140 0.66 2.20 19.38 156
Brevard 1972-1999 -1.32 7.23 17.95 195 -1.47 1.99 19.90 195
F Indian River 1972-1997 -0.88 6.95 14.63 106 -0.53 1.97 15.73 107
St. Lucie 1972-1997 0.54 6.77 10.42 102 0.54 1.96 10.97 102
o
R Martin 1971-1999 2.22 6.58 21.84 125 2.05 1.95 23.59 126
SPalm Beach 1974-1996 1.46 6.22 13.83 105 1.14 1.90 15.61 105
Broward 1975-1998 1.09 5.71 22.13 133 0.98 1.79 24.12 133
Dade 1980-1998 -0.12 5.27 24.35 105 -0.32 1.68 22.90 107




Table 3b

Summary of Countywide Average SHWL and MHWL Change Characteristics for the Twelve Coastal Counties on the West Coast of Florida.
w Average Average Average Number Average Average Number
E Survey SHWL SHW SHWL of Data MHWL MHW MHWL of Data
S County Dates Change Rate Elevation Deviation Points Change Rate Elevation Deviation Points
T (years) (ft/yr) (ft) (ft) for SHWL (ft/yr) (ft) (ft) for MHWI
Escambia 1974-1998 4.46 3.12 40.67 216 4.46 1.16 39.67 216
o Okaloosa 1973-1998 3.66 2.96 36.18 50 3.49 1.12 35.47 50
A Walton 1973-1998 2.99 2.90 34.49 134 3.35 1.12 35.20 133
S
T Bay 1971-1999 3.45 2.89 44.85 160 2.91 1.10 41.53 160
S Gulf 1973-1998 1.61 2.94 36.57 173 3.81 0.98 36.54 170
0 Franklin 1973-1998 1.95 3.41 20.97 153 1.85 1.10 19.83 153
F
F Pinellas 1974-1999 3.90 3.86 37.33 119 4.66 1.24 49.04 95
o Manatee 1974-1998 3.42 3.24 34.18 58 3.37 1.11 32.82 58
R Sarasota 1974-1994 2.01 3.19 18.78 141 1.79 1.1-1 19.16 141
9 Charlotte 1974-1998 1.67 3.38 42.97 67 2.17 1.15 43.46 67
4 Lee 1974-1994 3.61 3.88 29.50 229 4.75 1.23 32.00 238
Collier 1973-1988 -0.30 4.68 7.20 36 0.19 1.56 8.74 39
East Coast -Computing the average of all the SHWL change rate data and the average of all the MHWL change rate data between Nassau and Brevard counties, the computed average SHWL change rate of +1.37 feet per year is higher than that for the computed average MHWL change rate of +0.74 feet per year. Similarly using all the SHWL and MHWL change rate data for counties between Indian River and Dade, although the average SHWL change rate of +0.78 feet per year is higher than that of the average MHWL of +0.69 feet per year, the difference between them (average SHWL and average MHWL) is much less. Also the change rate averages computed using Nassau-Brevard Counties' data are higher than that computed using Indian River-Dade counties' data. On the other hand, the average of all the MHWL variability data between Nassau to Brevard counties of 25.40 feet is higher than that for the SHWL of 20.35 feet, and considering the variability data between Indian River and Dade counties, it is about the same in magnitude for the average SHWL variability and MHWL variability which is 18.19 feet and 19.22 feet respectively.
West Panhandle Coast Computing the average of all the SHWL change rate data and the average of all the MHWL change rate data between Escambia and Franklin counties, the computed average SHWL of +3.02 feet per year annual change rate is less than that for the MHWL change rate of +3.38 feet per year. The average of all the MHWL variability data between Escambia and Franklin counties is 35.03 feet that is about the same in magnitude as that computed for the average SHWL variability of 36.04 feet.




West Coast For the shoreline between Pinellas and Collier Counties, the average SHWL change rate of +2.88 feet per year is less than that for the MHWL change rate of +3.41 feet per year. The average of all the MHWL variability data between Escambia and Franklin counties is about the same in magnitude as that computed for the average SHWL variability of 29.18 feet and 31.56 feet respectively.
The averages using all the SHWL data for the 24 coastal counties are: average SHWL change rate is +2.06 feet per year, the average SHWL variability is 26.52 feet, the average MHWL change rate is +2.09 feet per year and the average MHWL variability is 28.17 feet, based on the analysis of all the available field surveyed beach profiles from 1971 to 1999 from OBCS.
In reviewing the results presented in this Atlas of SHWL change characteristics, it is surprising at least from the short term analysis of data that the Florida SHW L is not characterized by a pervasive erosional trend. However, it will also become evident that the Florida SHWL is characterized by some areas of erosion and other areas of advancement and, as noted, substantial nourishment has occurred during the period encompassed by the data used in this analysis. Stabilized inlet entrances play a great role in these uneven patterns of erosion and accretion. The problems caused by inlets are especially severe on Florida's east coast and at a smaller number of west coast inlets. It is also surprising that the variabilities of the MHWL and SHWL are so close in magnitude.
V. DESCRIPTION OF THE TABLES
The Appendix presents results for each of the 24 CCCL counties for which shoreline positions are available. The first page for each county is a summary of the total shoreline length, the total number of original monuments in the county, (not necessarily the total number of monuments for which SHWL data are available in the particular county) and the total period encompassed by the data. Also included on this page in tabular form are the county average SHWL change rate, the county average deviation and the coun,-ty average SHW elevation. The second page is a figure depicting the county shoreline, the locations of the monuments on the shoreline and the characteristics of SHWL change as described earlier. Adjacent to each shoreline is a graph that presents the SHWL change rates for each of the monuments. A vertical bar, which extend equidistant on either side of the trend line depicting the SHWL change rate, represents the magnitude of one standard deviation, described earlier. In addition, the standard deviation is also plotted as a dashed line. Note that the vertical scales are different for the SHWL change rate and the SHWL standard deviations plotted on the graph and are not necessarily the same from one county to the next. In some plots extreme data points cause the overall scales to vary greatly so the scales for these plots with these extreme data points have been adjusted.
The remainder of the pages for a particular county in the Appendix present detailed tabulations of the short-term SHWL change characteristics. The header information is the county name with the range of dates for which the SHWL data are available. The first column is the monument identification, the second is the annual SHWL change rate, the third column is one standard deviation from the trend line and the fourth column is the number of points that are available for the analysis. Finally, if the number of SHWL positions available




was too small (<3) to calculate the standard deviation or too small (<2) to calculate SHWL change rate at a monument, this information is missing from the figures and tables for the monument.
VI. AN APPLICATION OF THE SHWL DATABASE
The standard deviation data in Column 3 of Table 2 represent the total standard deviation as defined in "High Frequency Shoreline Changes for the Panhandle area of Florida" Dean (1999) for each monument. The equation for the anticipated recession, RTR,
RTR = FTR,
in which 6 is the total standard deviation about the trend line as presented in the Appendix and the factor, FTR, is presented in Table 4 for various return periods.
The predicted SHWL recessions for the high frequency return periods in Table 4 are computed as an illustration of the application of the recommended method from the report above under certain assumptions stated in the report. For monument R-023 in Nassau County, the "total standard deviation" is 12.9 feet, for which the recession, RTR values are computed for each associated return period and the results are both tabulated and plotted in Table 5 and Figure 7, respectively. The values of FTR in Table 4 are based on a normal probability distribution function.
Table 4
Values of the Factor FTR for Various Return Periods, TR.
FTR for Return Periods, TR (years)
Return Periods,TR (years) 5 10 15 20 25 30 35
FTR 0.97 1.40 1.61 1.75 1.86 1.96 2.00
Table 5
Predicted Values of SHWL Recession for Various Return Periods, TR for Nassau County Monument R-023.
FTR for Return Periods, TR (years)
Return Periods,TR (years) 5 10 15 20 25 30 35
Recession, RTR 12.5 18.1 20.8 1 22.6 24 25.3 25.8




Monument R-023, Nassau County
25
0
1i5
1 0 r . . I . . I . . I . .
5 10 15 20 25 30 35
Return Periods, TR in Years
Figure 7 Predicted Values of SHWL Recession for High Frequency Return Periods
for the Total Standard Deviation Value of 12.9 Feet for Monument R-023
in Nassau County. This is an Example of an Application of the SHWL Database.
VII. FINAL COMMENT REGARDING USE OF THIS ATLAS
The user of the results presented in this Atlas is cautioned that they represent the results of the analysis described and that there are other methods by which the data could have been analyzed. Although it is believed that these alternate methods would not lead to results that would have differed greatly from those presented here, in cases where the characteristics of SHWL change are of considerable importance, it is recommended that the user examine the original sources of data for determining the SHWL position data for the locations of interest.
VIII. ACKNOWLEDGMENTS
The authors are indebted to the Office of Beaches and Coastal Systems of the Florida Department of Environmental Protection for establishing, maintaining and making freely available the field surveyed beach profiles for the 24 coastal counties of Florida on which this Atlas is based. The current link that contains the beach profiles for the 24 coastal counties is http://www.dep.state.fl.us/beach/his-shor.htm.




IX. REFERENCES

Dean, R.G. (1999) "High Frequency Shoreline Changes for the Panhandle Area of Florida", University of Florida, Department of Civil and Coastal Engineering Report No. UFL/COEL99/025.
Dean, R.G., and S. Malakar, (1999). Projected Flood Hazard Zones in Florida, Journal of Coastal Research, SI(28), 85-94.
Dean, R.G., J. Cheng and S. Malakar (1998) "Characteristics of Shoreline Change Along the Sandy Beaches of the State of Florida: An Atlas", University of Florida, Department of Civil and Coastal Engineering Report No. UFL/COEL-98/015.
Balsille, J.H. (1987) "Predicted Open Coast Tidal Datums for the Florida East Coast", Office of Beaches and Coastal Systems, Florida Department of Environmental Protections, Beaches and Shores Special Report No. 87-1.




APPENDIX




SHWL CHANGE CHARACTERISTICS FOR
NASSAU COUNTY

NAS-1

Total Shoreline Length: 15 miles
Total Number of Monuments: 82
Beach Profile Survey Period in Years: 1974-1999 Average SHWL Change Rate: 5.29 ft/yr
Average Standard Deviation: 42.02 ft
Average SHWL Elevation (wrt NGVD): 11.65 ft




SHWL Change Rate (ft/yr) Using (1974-1999) Data

Scale:
0 1 2 3 4
Miles 7
T

- R-10 R-20
- R-30
O
Z-40
CDj
(0
-50
Z-60 r R-70

Figure NAS-1

Std Dev Scale in Feet
0 100
0 100

Annual SHWL Change Rates With Deviations Along the Coastline of Nassau County.




County: Nassau Using (1974-1999) Data

DEP SHWL Change Std.Deviation No of Data
Monument-ID Rate(ft/yr) (ft) Points

R-011 R-012 R-013 R-014 R-015
R-016 R-017 R-018 R-019 R-020
R-021 R-022 R-023 R-024 R-025
R-026 R-027 R-028 R-029 R-030
R-031 R-032 R-033 R-034 R-035
R-036 R-037 R-038 R-039 R-040

.3
7.8
-1.1
-3.5
1.6
1.5
.6
3.8 33.3 11.1
1.8 10.6
4.6 7.6 8.2
8.6
.8
.4
1.0
-4.4
1.9 7.6
4.7 3.1 3.2
3.8 4.6 .3
8.1 10.0

19.4 67.9
49.5 52.4
8.7
2.6 52.3
39.2 92.0 102.3
9.7 34.8 12.9
20.6 28.0
32.6
2.4 2.6 25.0 25.3
6.8
26.4 30.5
.9
5.6
4.4 9.1 35.1 14.4 49.1

Continued on Next Page ...

NAS-3




County: Nassau Using (1974-1999) Data

DEP
Monument ID
R-041 R-042 R-043 R-044 R-045
R-046 R-047 R-048 R-049 R-050
R-051 R-052 R-053 R-054 R-055
R-056 R-057 R-058 R-059 R-060
R-061 R-062 R-063 R-064 R-065
R-066 R-067 R-068 R-069 R-070

SHWL Change Rate(ft/yr)
9.1 7.0 5.9 8.3 6.3
5.8
20.8 -6.0
5.6 3.4
-.6
-3.0
-2.4
4.1 -1.3
-.4
4.9 3.2 4.0 7.8
8.8 -4.7
7.3 6.7 5.9
3.8 11.4 4.9 -7.1
7.0

Std.Deviation No of Data
(ft) Points

32.4
29.5 25.7 22.8 26.7
32.0 103.0 71.9 20.8 12.2
42.5 58.8 72.1
49.6 69.8
72.2 21.4 15.1 9.3 74.7
58.3 76.5 67.5 73.7 72.0
58.1
69.6 81.8 12.6 110.5

Continued on Next Page ...

NAS-4




County: Nassau Using (1974-1999) Data

DEP
Monument-ID
R-071 R-072 R-073 R-074 R-075
R-076 R-077 R-079

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

8.1
-8.1
4.4 7.0 2.3
-3.2
-2.5
4.2

79.8 8.7
51.4 47.9 53.6
8.3
50.5 79.6

NAS-5




SHWL CHANGE CHARACTERISTICS FOR
DUVAL COUNTY

DUV-1

Total Shoreline Length: 15 miles
Total Number of Monuments: 80
Beach Profile Survey Period in Years: 1974-1999 Average SHWL Change Rate: 6.40 ft/yr
Average Standard Deviation: 47.55 ft
Average SHWL Elevation (wrt NGVD): 10.90 ft




SHWL Change Rate (ft/yr) Using (1974-1999) Data

Scale:
0 1 2
Miles

- N10
- R-10

R-20

Ft.George Inlet
St.Johns River R-30 Entrance
R-40
(0 O C.)
R-50
R-60 C
R-70
SR-O80

Figure DUV

Annual SHWL Change Rates With Deviations Along the Coastline of Duval County.




County: Duval Using (1974-1999) Data

DEP
Monument-ID
R-001 R-002 R-003 R-004 R-005
R-006 R-007 R-008 R-009 R-010
R-011 R-012 R-013 R-014 R-015
R-016 R-017 R-018 R-019 R-020
R-021 R-022 R-024 R-026 R-027
R-028 R-029 R-032 R-033 R-034

SHWL Change Rate(ft/yr)
31.5 21.6
2.8
3.8 -5.5
3.2
2.0 -3.5
-2.5
11.2
13 .1 15.3 17.6 10.1
6.3
9.6
13.4
7.0 4.6 3.9
9.1 9.0 17.1 37.0
9.9
13.8
7.4
14.4
8.2 12.1

Std.Deviation No of Data
(ft) Points

125.8 234.2 50.5 87.2
21.2
187.2
159.2 26.8 106.9 33.8
11.9 23.5 9.6 87.9 100.3
148.9 58.0 212.0
129.7 135.4
281.6 82.4
59.3 136.3 22.5
.2
115.1
59.3 63.4 15.8

Continued on Next Page ...

DUV-3




County: Duval Using (1974-1999) Data

DEP
Monument ID
R-035 R-036 R-037 R-038 R-039
R-040 R-041 R-042 R-043 R-044
R-045 R-046 R-047 R-048 R-049
R-050 R-051 R-052 R-053 R-054
R-055 R-056 R-057 R-058 R-059
R-060 R-061 R-062 R-063 R-064

SHWL Change Rate(ft/yr)
6.9 8.7
22.2
6.5 7.0
3.0 7.9 7.5 7.0 4.5
4.9 3.6
3.0 2.9 1.4
2.7 2.1 2.2 4.0 5.6
7.4
10.4
6.0 4.2 3.3
5.8
.0
-.4
-.1
.9

Std.Deviation No of Data
(ft) Points

71.6 18.7
60.6 1.1
8.2
50.2 30.2 24.9 12.6
7.7
13.6 16.1 23.5
19.2 16.6
20.9 22.2 31.5
1.9 10.2
11.5
21.5 9.0 8.8 6.3
16.1 37.9
1.6 1.0 7.8

Continued on Next Page ...

DUV-4




County: Duval Using (1974-1999) Data

DEP
Monument-ID
R-065 R-066 R-067 R-068 R-069
R-070 R-071 R-072 R-073 R-074
R-075 R-076 R-077 R-078 R-079
R-080

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

3.0
-6.3
3.5 6.8 .0
3.2
-.3
12.0
-.5
1.3
3.0 1.6
-1.8
2.2 2.5
1.3

9.1 38.0
6.6 14.3
.2
6.7 1.0 48.0
25.3 17.9
14.5 14.6
25.2 11.7 7.2

4.5

DUV- 5




SHWL CHANGE CHARACTERISTICS FOR
ST. JOHNS COUNTY

STJ-1

Total Shoreline Length: 39 miles
Total Number of Monuments: 209
Beach Profile Survey Period in Years: 1972-1999 Average SHWL Change Rate: 1.71 ft/yr
Average Standard Deviation: 14.34 ft
Average SHWL Elevation (wrt NGVD): 9.83 ft




Scale:
0 1 2 3 4
Miles
N -R- 1

-R-10
-R-20
R-30

R-40 R-50 R-60 R-70
R-90 0
O
- R-80
R 100
R-110
R-120
St.Augustine Inlet
R- 130 R- 140
- R-150 R-160
- -170 R-180 SR-190
Matanzas Inlet >
R-200

SHWL Change Rate (ft/yr) Using (1972-1999) Data
O
L O 0

Std Dev Scale in Feet
0 50

Figure STJ- I

Annual SHWL Change Rates With Deviations Along the Coastline of St.Johns County.

STJ-2




County: St. Johns Using (1972-1999) Data

DEP
Monument-ID
R-001 R-002 R-003 R-004 T-005
R-006 R-007 R-008 R-009 R-010
R-011 R-012 R-013
R-014A
R-015
R-016 R-017 R-018 R-019 R-020
R-021 R-022 R-023 R-024 R-025
R-026 R-027 R-028 R-029 R-030

SHWL Change Rate(ft/yr)
2.6 2.6
-.4
-.1
.0
.0
.2
1.2 1.9 1.5
2.0 2.7 1.7 1.0 2.2
1.7 2.7
-.4
-.1
-.9
-.2
-.6
-1.6
2.1
-.5
-1.5
-1.1
-.9
-.3
-.7

Std.Deviation No of Data
(ft) Points

5.6
11.3 10.5
.0
.1
.1
7.5 8.4 13.8 8.6
12.2 11.4
2.1 9.6
6.0
8.3 14.6 6.2 7.4
6.7
5.6 5.1 26.4
7.8 11.1
11.5
9.9 12.9 15.9 15.0

Continued on Next Page ...

STJ-3




County: St. Johns Using (1972-1999) Data

DEP
Monument-ID
R-031
R-033A
R-034 T-035 R-036
R-037 R-038 R-039 T-040 T-041
R-042 R-043 R-044 R-045 R-046
T-047 T-048 R-049 R-050 T-051
R-052 R-053 R-054 R-055 R-056
T-057 R-058 R-059 R-060 R-061

SHWL Change Rate(ft/yr)
-1.1
.2
-.5
1.5
-.3
.3
-.1
.0
1.3 1.7
-.6
.3
.4
-.6
-.4
.8
.2
-.3
.3
1.1
-.7
-.3
-.2
-.6
-1.2
.3
-.5
-.1
.5
.2

Std.Deviation No of Data
(ft) Points

14.9
6.1 9.4
3.2 7.5
14.3 12.8 12.8
5.5 3.2
12.7 14.1 16.0 13.1 11.8
3.4 4.2 12.5 11.4 1.6
10.2 17.4 10.9 11.0
10.9
7.9 6.7 10.1
10.3 13.1

Continued on Next Page ...

STJ-4




County: St. Johns Using (1972-1999) Data

DEP
Monument-ID
R-062 R-063 R-064 R-065 R-066
R-067 R-068 R-069 T-070 R-071
R-072 R-073 R-074 R-075 R-076
R-077 T-078 R-079 R-080 R-081
R-082 R-083 R-084 R-085 R-086
R-087 R-088 R-089 R-090 R-091

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

.1
.0
.2
.2
-.6
.0
-.1
-1.0
2.0
.6
.7
-.2
-.1
.5
.7
.7
2.3
.8
1.1
-.1
-1.8
4.3 .1
2.0 2.7
.3
-.3
1.0
-.3
-.4

10.9 15.0
6.9 9.2 14.1
12.4 12.1 12.0
6.0 17.5
16.3 13.9 13.6 13.2 22.6
20.9
2.7 11.4 3.9 11.7
14.3 12.4 28.4 11.4 17.4
16.9 14.3 12.7 14.6
3.8

Continued on Next Page ...

STJ-5




County: St. Johns Using (1972-1999) Data

DEP
Monument-ID
R-092 R-093 R-094 R-095 R-096
R-097 R-098 R-099 R-100 R-101
R-102 R-103 T-104 R-105 R-106
R-107 R-108 T-110 R-111 T-112
R-113 T-114 R-115 R-116 R-117
R-118 R-119 R-120 R-121 R-122

SHWL Change Rate(ft/yr)
.1
.4
-.8
-1.2
-1.3
-1.3
-.9
-1.0
-.9
-1.6
-.5
-.7
-1.0
-.2
.0
-1.8
-.5
-.8
-1.2
.9
-.3
1.9 1.8
.2
-1.7
-2.8
.6
.5
1.2 7.4

Std.Deviation No of Data
(ft) Points

4.0 6.0 7.4 17.4 6.5
10.0 13.8
8.1 3.4
8.7
14.5 12.3
5.1 6.2 10.2
13.3 11.6 11.9
4.3 7.6
10.4 10.6 19.5 12.3 13.9
8.9
41.4 34.6 26.8 48.7

Continued on Next Page ...

STJ-6




County: St. Johns Using

DEP
Monument-ID
T-124 T-126
R-127A
T-128 T-129
T-130 T-132
R-133A R-135A
T-138
R-139 R-141 R-143
R-144A
R-145
R-146
R-147A
R-150 R-151 R-152
R-153 R-154 R-155 T-156 T-157
R-158 T-159 R-160 T-161 R-162

SHWL Change Rate(ft/yr)
55.5 31.9 25.1 13.1
7.8
5.9 12.9
9.5
-15.8
-7.6
-.1
-.5
-.7
-.7
2.8
1.4
-.7
-.6
1.5 2.8
5.0 6.4 6.7
.9
3.9
9.6 4.6 7.5 7.5
8.9

Std.Deviation No of Data
(ft) Points

152.1
194.2 15.1
5.1 2.5
3.7 35.6 59.4 36.2 14.5
6.1
38.3 4.7 18.6
4.3
52.3 50.9 13.9
21.3 15.8
17.8 20.1 13.0
1.6 10.2
27.4
3.8 9.1 7.3 18.4

Continued on Next Page ...

STJ-7

(1972-1999) Data




County: St. Johns Using

DEP
Monument-ID
R-163 R-164 R-165 R-166 R-167
R-168 R-169 R-170 T-171 T-172
R-173 R-174 R-175 R-176 R-177
R-178 R-179 R-180 T-181 R-182
T-183 T-184 T-185 R-186 R-187
R-188 R-189 R-190 R-191 R-192

SHWL Change Rate(ft/yr)
7.6 7.3 8.0 6.6 6.8
4.7 5.3 3.4 3.6
3.7
4.7 4.8 5.7 2.0 2.9
2.4 3.2 2.4 2.5 1.8
3.5
3.0 2.8 -8.5
1.5
2.0 2.8 2.7 2.5 3.2

Std.Deviation No of Data
(ft) Points

16.1 16.0 16.7 16.1 17.7
11.6 11.7 17.0 7.2 6.3
13.8 36.2 16.0 10.4 8.3
9.0 7.3
4.3 8.5 11.7
8.4 9.5 12.0 76.1 16.8
10.3 13.9
7.1 12.8
9.1

Continued on Next Page ...

STJ-8

(1972-1999) Data




County: St. Johns Using

DEP
Monument-ID
R-193 T-194 R-195 T-196
T-197A
R-198 R-199 R-200 R-201 R-202
R-203 R-204 R-205 R-206 R-207
R-208 R-209

SHWL Change Rate(ft/yr)
2.7 2.0
.4
7.1 -1.4
7.1 -.1
-1.0
-.6
-.6
-.6
-.3
-1.1
-1.6
-1.4
-1.6
-2.0

Std.Deviation No of Data
(ft) Points

5.1 7.6 9.9 11.5 16.5
31.9 1.4 19.9 8.3
5.8
3.3 9.5 15.9 7.2
7.2

7.5 9.5

STJ-9

(1972-1999) Data




SHWL CHANGE CHARACTERISTICS FOR
FLAGLER COUNTY

FLA-1

Total Shoreline Length: 19 miles
Total Number of Monuments: 100
Beach Profile Survey Period in Years: 1972-1999 Average SHWL Change Rate: 0.27 ft/yr
Average Standard Deviation: 7.11 ft
Average SHWL Elevation (wrt NGVD): 8.94 ft




Scale:
0 1 2 3 4
Miles
\,- -7-- R 1

SHWL Change Rate (ft,/yr) Using (1972 1999) Data

R-10 R-20/
- R-30
(0 0)
- R-40 O
- R-50
- R-60
-R-70
-R-80
-R-90
- R-100
C

I
/
4
-I
I
~~.1
N
N
/
/
) /
N
N
N
/ /

- -

7
7
-I
L____/
7
7
N I
N
S '*1
- III

(1d) AOCI PIS

Std Dev Scale in Feet
0 25

Figure FLA- 1

Annual SHWL Change Rates With Deviations Along the Coastline of Flager County.

FLA-2

- I I I

I I I

I

I I I

7-




County: Flagler Using (1972-1999) Data

DEP
Monument-ID
R-001 T-003 R-006 R-009 R-012
R-015 R-017 R-018 R-021 R-024
R-025 R-027 R-030 R-033 R-035
R-036 R-039 R-042 R-045 R-048
R-051 R-054 R-057 R-061 T-063
T-066 R-069 R-070 R-072 R-073

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

6.9
.6
-.4
-.1
.4
-1.2
-1.4
-.7
-.7
-.7
-1.6
-1.0
.0
.1
-1.0
.3
-.4
-1.0
-.1
-.1
-.8
-.1
.1
-.6
1.3
3.1
-1.4
-1.5
.0
-1.0

17.5
.5
1.9 6.8 5.6
8.2
5.3 10.0 8.6 10.0
1.6 7.3
3.9 10.5
.8
2.5 5.0 11.5 10.2 11.5
20.0 16.3
20.6 3.8 6.1

9.8 1.4 6.2
7.1 2.5

Continued on Next Page ...

FLA-3




County: Flagler Using (1972-1999) Data

DEP SHWL Change Std.Deviation No of Data
Monument-ID Rate(ft/yr) (ft) Points
R-074 .6 10.0 3
R-075 .3 10.6 5
R-076 .2 5.4 4
T-077 .9 1.5 3
R-078 .4 13.7 6
R-079 .5 6.5 4
R-080 3.0 6.3 4
R-081 2.8 24.8 4
T-082 -.6 2.3 3
R-084 .1 4.5 6
R-086 2.0 8.0 4
R-087 .2 6.3 6
R-088 -.3 4.3 4
R-089 .2 2.6 4
R-090 .1 3.5 6
R-091 .6 .8 4
R-092 .5 1.8 4
R-093 .6 3.0 6
R-094 .8 5.3 4
R-095 .9 4.9 4
R-096 .9 8.5 6
R-097 .9 4.6 4
R-098 .6 7.7 4
R-099 .7 7.9 6
R-100 .8 3.3 4

FLA-4




SHWL CHANGE CHARACTERISTICS FOR
VOLUSIA COUNTY

Total Shoreline Length: 51 miles
Total Number of Monuments: 272
Beach Profile Survey Period in Years: 1972-1997 Average SHWL Change Rate: 0.34 ft/yr
Average Standard Deviation: 11.75 ft
Average SHWL Elevation (wrt NGVD): 8.30 ft

VOL-1




Scale:
0 2 4
Miles R-1
- R-10 R-20 R-30 SR-40 R-50 R-60 R-70
- R-80 R-90
R-100 R-110 R-120
- R-130
- R-140 Ponce de Leon Inlet R-160 0
SR-170 .
-R-180 R-190
R-200 R-210
R 220 R-230

Figure VOL- 1

SHWL Change Rate (ft/yr) Using (1972-1997) Data

Std Dev Scale in Feet
0 50
0 50

Annual SHWL Change Rates With Deviations Along the Coastline of Volusia County.




County: Volusia Using (1972-1997) Data

DEP
Monument-ID
R-001 R-003 R-006 R-009 R-012
R-015 R-018 R-021 R-024 R-027
R-030 R-033 T-036 T-039 R-042
R-045 R-048 R-051 R-054 R-055
R-057 R-058 R-060 R-061 R-062
R-063 R-064 T-066 R-067 R-068

SHWL Change Rate(ft/yr)
.1
.6
.6
.7
.5
.8
.6
1.0
.7
.9
.2
-.1
2.7 1.7
.6
.2
4.4
.3
-.1
.0
-2.4
-.5
.1
-1.1
.1
-.3
-.5
.3
-2.2
.0

Std.Deviation No of Data
(ft) Points

3.1 5.5 4.4 4.8 3.8

2.5 6.4 10.4
3.6 12.6

4.5 2.8 5.4
4.9 9.7

11.9
.7
8.4
1.9 9.8
12.0
4.0 4.2 10.5 9.5

7.6 8.2
.6
9.8
.3

Continued on Next Page ...

VOL-3




County: Volusia Using (1972-1997) Data

DEP
Monument-ID
T-069 R-072 R-073 R-074 R-075
R-076 R-077 T-078 R-079 T-081
R-083 R-084 R-085 R-086 R-087
R-093 R-094 T-096 T-099 T-102
R-105 R-106 R-107 R-108 R-111
R-112 T-114 R-116 R-117 T-118

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

-.6
.1
1.3 1.9
.6
-.1
.8
.2
.5
-.1
.0
3.3 1.5
.2
4.7
.4
.1
-2.4
.0
.5
.5
1.1
-2.6
-4.7
-3.3
-1.3
-1.4
-3.4
-1.1
-3.5

.1
1.0 .8
4.2 .1

6.0 7.4
6.1 10.7 11.5
.2
14 .1
3.2 1.3 14.1
4.2 1.9 .3
.1
.8
8.0 8.0 2.1 5.6 17.0

2.4
2.5 5.9 4.7 7.6

Continued on Next Page ...

VOL-4




County: Volusia Using (1972-1997) Data

DEP
Monument-ID
R-119 R-120 R-121 R-122 T-123
R-124 R-126 R-128 R-129 R-130
R-131 R-132 R-133 R-134 R-135
R-136 R-137 R-138 R-139 T-141
R-142 R-143 R-144 R-145 R-146
T-147 R-148 R-150 R-153 R-154

SHWL Change Rate(ft/yr)
.9
-1.1
.2
-1.0
.7
-1.5
-1.6
-3.6
.3
-2.2
1.0
.1
1.6 2.4 2.8
2.9 4.5 12.3
5.1
12.7
-2.3
5.9 9.3 6.8 4.0
16.4
7.6 3.3
.2
3.7

Std.Deviation No of Data
(ft) Points

15.5 4.9 8.0 5.8 7.6
8.2 12.9 21.1 14.7 26.5
17.2 8.6 22.9 13.3 12.7
20.1 17.4
27.2 20.9
27.4
43.8 7.3 45.5 56.8 74.4
31.3 58.3 9.1
8.8 13.1

Continued on Next Page ...

VOL-5




County: Volusia Using (1972-1997) Data

DEP
Monument-ID
R-155 R-156 R-157 R-158 R-159
R-160 R-161 R-162 R-163 R-165
R-166 R-167 R-168 R-170 R-171
R-173 R-174 R-175 T-177 R-178
R-179 R-180 R-182 R-183 R-184
R-185 R-186 R-187
R-189A
R-191

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

2.8 4.1 4.0 2.4
.4
1.6
.4
.1
-2.3
-.2
.0
.4
-4.8
.2
.4
.0
-1.6
-.3
-1.4
-4.4
-2.2
-.7
-.8
-2.3
-8.6
-.8
-1.5
-1.2
.1
-10.7

1.6 33.3 12.8 10.2 36.9
34.5 24.2 15.1 60.9
20.4
15.4 16.1 32.0 12.7 15.8
1.2 10.0 2.4
7.8 20.9
15.7 11.4 9.7 13.6
41.3
3.5 11.8
4.2 .3
47.1

Continued on Next Page ...

VOL-6




County: Volusia Using (1972-1997) Data

DEP
Monument-ID
R-192 R-195 R-198 R-199 R-200
R-201 R-204 R-206 R-207 R-210
R-213 R-216 R-219 R-222 R-224
R-225 R-228 R-229 R-231 R-234

SHWL Change Rate(ft/yr)
-17.2
-.1
-.5
-.6
-1.0
-1.1
.8
.8
.6
.2
-.3
.1
-.1
-.2
-.4
-.2
.8
-.6
-.4
-.8

Std.Deviation No of Data
(ft) Points

4.5 7.4
2.7 5.3
5.9
6.2
9.0 1.6 3.2
8.8
2.4
7.7 4.0 5.7 4.0
3.1 7.7 5.7 4.5 5.4

VOL-7




SHWL CHANGE CHARACTERISTICS FOR
BREVARD COUNTY

BRE-1

Total Shoreline Length: 41 miles
Total Number of Monuments: 219
Beach Profile Survey Period in Years: 1972-1999 Average SHWL Change Rate: -1.32 ft/yr
Average Standard Deviation: 17.95 ft
Average SHWL Elevation (wrt NGVD): 7.23 ft




Scale:
02468
0 2 Miles4 6 Miles

1-100 1-110
V-120
-V-130 V-140
-V 150
0

SHWL Change Rate (ft, yr)
Using (1972-1999) Data
CO
CC
... I 111 I I 1111 1111 1 I I I II I II

-C
C_
--S
C
I------

2

00
(H ) ASQ p~g

Std Dev Scale in Feet
0 100
0 100

Figure BRE-1 Annual SHWL Change Rates With Deviations
Along the Coastline of Brevard County.

BRE-2




County: Brevard Using (1972-1999) Data

DEP
Monument-ID
R-001-T
R-002 R-003 T-004 R-005
R-006-T R-007-T
R-008 R-009 T-010

R-011 R-012 R-013 R-014
R-015-T
R-016
R-017-T
R-018 R-019 R-020
R-021 R-022 R-023 R-024 R-025
R-026 R-027
R-028-T R-029-T
R-030
Continued on Next Page ...

SHWL Change Rate(ft/yr)
-.2
3.9 1.2
-11.2
-.5
-4.9
-12.4
-.3
-1.5
-8.1

.7
.1
1.2 1.6
-3.4
-.3
-1.6
1.6
-7.4
3.9
4.3
-9.7
4.9 5.0 5.4
5.6 23.6
8.9 11.9 3.7

Std.Deviation No of Data
(ft) Points

9.9 33.2 86.2 10.5
58.2
43.3 20.0 48.5 62.1
3.5
40.1
51.6 35.7 37.0 10.2
48.6 5.3
21.4 74.7 13.4
14.0 79.9 11.5
7.0 2.6
6.6 78.3
9.1 12.2 28.8

BRE-3




County: Brevard Using (1972-1999) Data

DEP
Monument-ID
R-031 R-032 R-033 R-034
R-035-T
R-036 R-037 R-038 R-039 R-040

R-041-T
R-042
R-043-T
R-044
R-046
R-047 R-048 R-049
R-050-T R-051-T
R-052-T R-053-T
R-054
R-055-T R-056-T
R-057-T
R-059-T R-060-T R-061-T R-062-T
Continued on Next Page ...

SHWL Change Rate(ft/yr)
4.6 1.0 1.3
.2
2.3
.6
-7.4
1.2
.1
.0

.1
.4
.2
-6.9
.3
-.2
.4
-6.6
.7
11.6
.9
-.3
.0
-.9
.1

1.0 1.7
1.0 1.4
2.5

Std.Deviation No of Data
(ft) Points

2.4 13.8
2.2 15.4
3.5
10.6 14.8 12.1 1.1
.2
1.2
3.1 1.6 32.5 9.2
3.1 6.1 25.9 6.4 22.4
5.1 3.2 10.0
4.7 8.9

1.0 5.1 .4
6.9 2.0

BRE-4




County: Brevard Using (1972-1999) Data

DEP
Monument-ID
R-063-T R-065-T
R-066
R-068-T
R-069

R-070 R-071
R-072-T
R-073 R-075
R-076-T
R-077
R-078-T
R-079 R-080
R-081
R-082-T R-083-T
R-084 R-085
R-086 R-087
R-088-T R-089-T R-090-T
R-091-T R-092-T
R-093
R-094-T R-095-T
Continued on Next Page ...

SHWL Change Rate(ft/yr)
1.0 1.3
.3
.8
-7.6

-6.2
-.4
.3
-5.8
-.6
.2
.0
.3
-11.3
-10.1
1.2 .1
.0
-.7
-1.5
-7.8
-8.9
-.5
-2.3
-.4

-.7
-.9
-.4
-.1
.5

Std.Deviation No of Data
(ft) Po:nts

3.2 5.7 1.9 10.6 42.1
33.9 7.3
.8
35.6
4.0
2.0 3.3 1.1
69.9 64.2
50.8 11.3
.1
8.0 4.0
13.7 50.1
9.8 4.1 6.8

6.3
8.8 6.6
4.0 4.8

BRE-5




County: Brevard Using (1972-1999) Data

DEP SHWL Change
Monument-ID Rate(ft/yr)

R-096 R-097 R-098 R-099 R-100
R-101 R-102 R-103 R-105 R-106
R-107-T R-108 R-110-T R-111 R-112

R-113-T
R-114 R-115 R-116
R-117-T
R-118 R-119
R-121-T
R-122 R-123
R-124
R-125-T R-126-T
R-127 R-128
Continued on Next Page ...

-.4
-.2
-.5
-9.2
-10.1
-.8
-6.6
-.3
-10.1
-12.9
.5
-.2
-.5
-.1
-.7

.9
.3
-9.6
4.1
.0
-9.7
-7.7
1.2 1.1
.6
1.4 1.4
-1.0
-9.7
.4

Std.Deviation No of Data
(ft) Points

8.5 5.2 5.3 47.0 52.4
9.4 63.3
5.9 49.1 55.0
8.6 3.7 10.6
8.7 3.1
3.7 8.6
51.7 22.6 6.2
13.5 47.1
4.0 8.6 12.2
14.3
5.9 3.2 67.9
3.3

BRE-6




County: Brevard Using (1972-1999) Data

DEP SHWL Change
Monument-ID Rate(ft/yr)

R-129-T R-130 R-132 R-133 R-134
R-135 R-136
R-137-T R-138-T R-139
R-140 R-141 R-142
R-143 R-144
R-145 R-146
R-147-T R-148 R-149
R-150 R-151 R-152 R-153 R-154

R-156
R-157-T
R-159-T
R-161 R-162
Continued on Next Page ...

-.7
.7
.6
.6
-.2
-.5
-8.7
.1
1.2
-.2
-.2
-.9
.2
-.3
.1
-.6
-.2
-2.8
-.3
-7.2
-5.9
-6.6
-4.6
-5.9
.9
-.5
.7
-3.0
-.3
-.6

Std.Deviation No of Data
(ft) Points

7.1 4.8 6.5
4.6 7.7

10.6
45.3 6.9
6.0 1.9
12.2
7.1 5.9 17.7
7.0
4.5 1.6 21.0
7.1 34.5
54.7
39.6 36.0
36.7 6.6

5.0 4.6 9.4
8.8 3.5

BRE-7




County: Brevard Using (1972-1999) Data

DEP
Monument-ID
R-164 R-165 R-166 R-167 R-168
R-169
R-171-T
R-172 R-174 R-176
R-177 R-178 R-179 R-180 R-181
R-182 R-183 R-184 R-185 R-186
R-187 R-188 R-189 R-190 R-191
R-192 R-193 R-194 R-195 R-196

SHWL Change Rate(ft/yr)
-.4
-3.2
-1.0
-5.1
-3.8
-.2
.6
.9
1.3
-12.9
.2
-14.3
.7
.1
-11.9
.9
.7
.5
.2
.0
-6.1
.5
.4
-7.9
-.4
1.1
-4.3
.0
-.2
-.1

Std.Deviation No of Data
(ft) Points

4.3 42.3
.9
39.9 50.6
5.4
3.8 6.4
4.6 75.2
9.1 87.7
2.3 9.4 73.8
7.1 10.0
4.3 8.8
7.9
39.7
4.9 10.7 50.0
3.6
3.9 25.8
.8
6.0 2.4

Continued on Next Page ...

BRE-8




County: Brevard Using (1972-1999) Data

DEP
Monument ID
R-197 R-198 R-199 R-200 R-201
R-203 R-204 R-207 R-210 R-213

R-216-T R-219

SHWL Change Rate(ft/yr)
-.1
-.5
-.1
-.5
-.9
.3
.8
.7
1.3
.5

.0
-13.7

Std.Deviation No of Data
(ft) Points

.3
14.8
2.3 1.5 4.7
2.0 10.4 9.3
2.5 3.4
9.3 96.0

BRE-9




SHWL CHANGE CHARACTERISTICS FOR
INDIAN RIVER COUNTY

IND-1

Total Shoreline Length: 22 miles
Total Number of Monuments: 119
Beach Profile Survey Period in Years: 1972-1997 Average SHWL Change Rate: -0.88 ft/yr
Average Standard Deviation: 14.63 ft
Average SHWL Elevation (wrt NGVD): 6.95 ft




Scale:
0 1 2 3 4
Miles
Ar
teoian3 jolet
set.et
R-1
R-10
R-20
R-30
0
R-0
R-650
RO

R-70

R-80
-90
R-100

SHWL Change Rate (ft/yr)
Using (1972-1997) Data
0 0
Co o
0 C
/
N
1 1 1 1 1 1 1 1 I I I I 4 I l i l l 1 1 /
1I

0 100

) 'I )
- \I
o(nj) *Aec rns

Figure IND-1

Annual SHWL Change Rates With Deviations Along the Coastline of Indian River County

IND-2




County: Indian River Using (1972-1997) Data

DEP
Monument-ID
R-001 R-002 R-003 R-004 R-005
R-006 R-007 R-008 R-009 R-010
R-012 R-014 R-015 R-018 R-019
R-021 R-022 R-023 R-024 R-025
R-026 R-027 R-028 R-029 R-030
R-033 R-034 R-035 T-036 R-037

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

-1.7
-1.9
-.1
-1.6
-.5
-1.7
-.7
.9
.7
.3
-1.0
-1.1
-1.3
-1.6
-1.2
-2.1
-2.3
-2.7
-2.3
-2.3
-2.2
-2.0
-2.0
-1.9
-2.0
-2.3
-1.6
-1.5
-1.2
-.7

9.9 19.3 22.9 16.7 11.6
8.2
4.9 3.7 13.4 1.2
7.2
2.3 5.7 13.2
3.9

6.7 4.0 2.5 .8
2.4
1.0 3.6 5.4 6.5
1.0
5.8 .6
3.6
.6
3.7

Continued on Next Page ...

IND-3




County: Indian River Using (1972-1997) Data

DEP
Monument-ID
T-038 R-039 R-040 R-041 R-042
R-043 R-044 T-045 R-047 R-048
R-049 R-050 R-051 R-052 R-053
R-054 R-055 R-056 R-057 R-058
T-060 R-061 R-062 R-063 R-064
R-065 R-066 R-068 R-069 T-071

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

-4.6
-1.4
-4.0
-2.3
-1.8
-6.2
-3.1
-3.5
-3.0
3.2
-1.3
-1.1
-.5
-.2
-3.4
2.6 2.1 2.9 3.0 1.7
3.6 1.2
.6
-1.9
-3.5
1.5
.7
-4.4
-2.2
2.3

3.5 15.5 24.8
5.9 13.2
20.9 26.6
3.8 21.3 53.0
5.8 7.6 8.2
3.2 12.2
12.9
.7
10.8 22.0 17.9
6.3
6.8 3.8 16.1 22.9
4.8 15.6 26.2 14.3 12.8

Continued on Next Page ...

IND-4




County: Indian River Using (1972-1997) Data

DEP
Monument-ID
T-072 R-073 R-074 R-075 R-076
R-077 R-078 T-079 R-080 R-081
R-082 R-083 R-084 R-085 R-086
R-087 R-088 R-089 R-090 R-091
R-092 R-093 R-094 T-096 R-097
T-098 R-099 R-101 R-102 R-103

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

.2
-5.6
.2
-5.1
-9.0
.1
-1.1
-.6
-1.0
-.4
-5.5
-.9
-3.7
-1.4
-.3
.4
1.9
3.5 8.1
-4.9
5.8 1.1
6.3
4.0 1.3
3.2
-3.8
-12.4
-4.5
-3.4

18.9 26.8
4.8 24.1
41.3
6.5 6.3
6.1 6.4 10.9
80.5
6.8 31.7 8.8
8.9
11.3 12.3 14.6
9.5 86.8
2.3 24.6 13.2
5.0 12.6
9.8 26.9 42.9 12.8 13.5

Continued on Next Page ...

IND-5




County: Indian River Using (1972-1997) Data

DEP
Monument-ID
R-104 R-105 R-106 R-107 R-108
R-109 R-110 R-111 T-112 T-113
R-114 R-115 R-116 T-117 T-118
R-119

SHWL Change Rate(ft/yr)
-4.7
-3.7
2.7 6.6
.3
2.7 -3.8
-14.0
6.6 4.0
-4.4
1.2 1.2 2.7
.0
1.0

Std.Deviation
(ft)
15.4 13.3 18.3 52.4
6.1
.6
54.9 96.9 21.3 11.9
36.3
.2
.4
2.6 12.4
9.5

No of Data
Points
3 5 3 3 6
3 3 4 3 3
5 3 3 3 3
4

IND-6




SHWL CHANGE CHARACTERISTICS FOR
ST. LUCIE COUNTY

STL-1

Total Shoreline Length: 21 miles
Total Number of Monuments: 115
Beach Profile Survey Period in Years: 1972-1997 Average SHWL Change Rate: 0.54 ft/yr
Average Standard Deviation: 10.42 ft
Average SHWL Elevation (wrt NGVD): 6.77 ft




Scale:
0 1 2 3 4
Miles

SHWL Change Rate (ft/yr) Using (1972-1997) Data

0
IVC\

Std Dev Scale in Feet 0 5(

Figure STL- 1

Annual SHWL Change Rates With Deviations Along the Coastline of St.Lucie County.

STL-2

a
0




County: St. Lucie Using

DEP
Monument-ID
T-001 R-002 R-003 R-004 R-005
R-006 R-007 R-008 R-009 R-010
R-011 R-012 R-013 R-014 R-015
R-016 R-017 R-018 R-019 R-020
R-021 R-022 R-023 R-024 R-027
R-029 R-030 R-031 R-032 R-033

SHWL Change Rate(ft/yr)
.0
-.5
-5.6
-1.4
-1.5
-.1
-.7
1.2
-.7
2.3
4.1 4.0 3.5 3.6
3.5
-1.1
-1.8
1.0 3.6
.9
4.1 4.5 4.9 4.0 7.4
7.0
.3
7.4 6.6 11.7

Std.Deviation No of Data
(ft) Points

6.8 7.0 33.2
.8
6.7
5.1 1.1
18.6 8.4 8.5

1.1
5.1 5.3 1.6 6.1

40.2 35.0
7.5 4.2 4.1
8.1
.2
.4
8.7 4.2
10.3
29.5 5.9 13.5
31.2

Continued on Next Page ...

STL-3

(1972-1997) Data




County: St. Lucie Using

DEP
Monument-ID
R-034 R-035 T-036 R-037 R-038
R-039 T-042 R-043 R-044 R-046
R-047 T-048 R-050 R-051 R-052
R-053 R-054 R-055 R-056 R-057
R-058 R-059 R-060 R-061 R-062
T-063 R-064 R-065 R-066 R-067

SHWL Change Rate(ft/yr)
-1.1
-2.8
-5.5
-4.3
-4.2
-3.8
-4.2
-1.5
-.8
-2.4
-1.6
-1.9
-.2
.8
.3
-.1
.6
.2
-.5
-.6
3.8
.4
-.3
.2
3.2
-1.4
-.7
-1.1
-1.8
-2.3

Std.Deviation No of Data
(ft) Points

10.9 10.0 19.3 7.5 10.7
17.7
2.8 9.7 9.6 12.9
13.6 10.1
3.7 7.4 12.6
18.3
9.0 19.0 15.7
8.7
4.3 13.4 14.2
5.5 6.8
13.0 12.3 12.9 12.0
4.7

Continued on Next Page ...

STL-4

(1972-1997) Data




County: St. Lucie Using (1972-1997) Data

DEP
Monument-ID
R-068 R-069 R-070 R-071 R-072
R-073 R-074 R-075 R-076 R-077
R-078 R-079 R-080 R-081 R-082
R-083 R-084 R-085 R-086 R-087
R-088 R-089 R-091 R-092 R-093
R-096 R-098 R-099 R-102 R-103

SHWL Change Rate(ft/yr)
-2.7
-2.9
-1.2
.6
-2.5
-2.0
-.6
-1.2
-.7
-.3
-.9
.5
.4
-.9
-.3
.2
.2
.0
-.2
4.7
-1.2
7.3
.0
-2.0
-2.0
-1.4
-1.8
-1.0
-.6
3.3

Std.Deviation
(ft)
2.4 9.0
18.4 23.3 16.0
.9
11.0
13.4 4.4 1.0
8.7 1.3 2.2 6.2 2.2
5.4 9.9 5.8 4.0 13.4
11.0
22.7
6.1 6.3 7.3

No of Data
Points
3 5 3 3 6
3 3 6 4 3
7 3 3 6 3
3 7 4 3 4
3 4 3 3 6

7.4
1.7 4.9 4.1 15.0

Continued on Next Page ...

STL-5




County: St. Lucie Using

DEP
Monument-ID
R-105 R-106 R-107 R-108 R-109
R-110 R-111 R-112 R-113 R-114
R-115

SHWL Change Rate(ft/yr)
.2
2.0 1.0
3.6 3.8
8.0 -1.4
1.5 3.2 1.4
.6

Std.Deviation No of Data
(ft) Points

7.6 7.2 1.3 15.8 17.4
33.7 9.7 5.6 23.0 8.1
20.1

STL-6

(1972-1997) Data




SHWL CHANGE CHARACTERISTICS FOR
MARTIN COUNTY

MAR-1

Total Shoreline Length: 24 miles
Total Number of Monuments: 127
Beach Profile Survey Period in Years: 1971-1999 Average SHWL Change Rate: 2.22 ft/yr
Average Standard Deviation: 21.84 ft
Average SHWL Elevation (wrt NGVD): 6.58 ft




Scale:
0 2 4 6 8
Miles
5 kuT m R -1

R-10

R-30 R-40

SR-50

R-70
- R-80
-R-90
- R-100

R 120

Figure MAR- 1

SHWL Change Rate (ft/yr) Using (1971-1999) Data
0

I LIT AO P0 P0

Shoreline Change Rates With Deviations Along the Coastline of Martin County.

MAR-2




County: Martin Using (1971-1999) Data

DEP
Monument-ID
R-001 R-002 R-003 R-004 R-005
R-006 R-007 R-008 R-009
R-010U
R-011
R-012U
R-013 R-014 R-015
R-016 R-017 R-018 R-019 R-020
R-021 R-022 R-023 R-024 R-025
R-026 R-027 R-028 R-029
R-030A

SHWL Change Rate(ft/yr)
.8
.1
.7
-.8
-.4
.4
.3
1.2
.2
2.0
.4
1.6
.6
1.0
.2
1.1
-.2
1.2 9.1
-.2
1.1
.0
.2
-.6
-.1
-1.1
-.2
-.2
2.4 -.8

Std.Deviation No of Data
(ft) Points

9.0 9.8 4.8 16.3 13.8
18.6 14.5 15.5 19.4 17.4
25.6 16.6 19.0
21.2 17.7
14.5 20.8 11.6 52.1 14 .1
12.9
7.0 14.3 9.5 10.8

4.1 2.7 3.0 9.2
4.9

Continued on Next Page ...

MAR -3




County: Martin Using (1971-1999) Data

DEP
Monument ID
R-031 R-032 R-033 R-034 R-035
R-036 R-037 R-038 R-039 R-040
R-041 R-042 R-045 R-046 R-047
R-048 R-049 R-050 R-051 R-052
R-053 R-054 R-055 R-056 R-057
R-058 R-059 R-060 R-061 R-062

SHWL Change Rate(ft/yr)
1.3
-.4
.1
.2
-1.0
-3.1
-3.9
-.7
1.0 1.0
1.5 4.3 15.4 17.2 4.9
11.1
12.8 11.5
6.4 6.4
3.2 3.2 2.1 3.0
.6
1.5 4.0 3.3 2.5 3.1

Std.Deviation No of Data
(ft) Points

9.9
19.6 7.2 8.6 17.6
35.8 57.5 29.9
38.5 27.1
28.0 19.1 37.7
26.3 77.1
69.3 38.6 40.0 11. 1
17.1
2.0 23.3
.6
3.6 8.3
4.5 11.2
19.1 21.4 30.6

Continued on Next Page ...

MAR -4




County: Martin Using (1971-1999) Data

DEP SHWL Change Std.Deviation No of Data
Monument-ID Rate(ft/yr) (ft) Points
R-063 3.0 32.0 3
R-064 -.7 28.3 4
R-065 .7 24.1 3
R-066 -.1 7.2 3
R-067 -.4 10.3 3
R-068 .0 11.0 3
R-069 -1.1 13.9 4
R-070 -1.2 12.9 3
R-071 2.7 7.8 3
R-072 1.7 17.5 4
R-073 2.6 17.4 4
R-074 3.4 16.4 3
R-075 3.6 33.8 3
R-076A 2.2 22.6 5
R-077 3.1 20.8 6
R-078 1.4 18.7 7
R-079 4.8 26.8 6
R-080 6.4 17.6 6
R-081 1.8 19.4 7
R-082 1.4 25.9 6
R-083 3.0 22.6 5
R-084 .9 20.7 5
R-085A 1.2 36.8 4
R-086 -7.0 84.6 6
R-087 2.7 36.2 6
R-088 5.0 22.4 6
R-089 5.0 19.3 5
R-090 4.7 17.1 5
R-091 3.1 23.6 6
R-092 2.1 24.2 5

Continued on Next Page ...

MAR- 5




County: Martin Using (1971-1999) Data

DEP
Monument-ID
R-093 R-094 R-095 R-096 R-097
R-098 R-099 R-100 R-101 R-102
R-103 R-104 R-105 R-106 R-107
R-108 R-109 R-110 R-111 R-112
R-113 R-114 R-115 R-116 R-117
R-118 R-119 R-120 R-121 R-122

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

1.7
4.0 2.1 .9
2.0
.8
.4
.2
.1
1.2
.7
.2
1.7 4.3 5.3
4.8 3.9 3.4 1.6
2.1
4.0 3.5 3.1 4.9 6.4
8.3
6.0 4.3 3.7 1.8

30.1 28.1 17.8 35.8 37.0
39.0 39.7 14.8 31.0 17.8
11.0
33.7 25.6 45.5 34.5
30.6 24.5 20.1 43.1 26.5
22.1 46.0 50.3 18.3 17.4
27.3 28.0 25.8 15.5 9.3

Continued on Next Page ...

MAR -6




County: Martin Using (1971-1999) Data

DEP
Monument-ID
R-123 R-124 R-125 R-126 R-127

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

.8
.4
-.2
.2
.4

4.6 6.5 2.5 .7
6.7

MAR -7




SHWL CHANGE CHARACTERISTICS FOR
PALM BEACH COUNTY

PAL-1

Total Shoreline Length: 42 miles
Total Number of Monuments: 227
Beach Profile Survey Period in Years: 1974-1996 Average SHWL Change Rate: 1.46 ft/yr
Average Standard Deviation: 13.82 ft
Average SHWL Elevation (wrt NGVD): 6.22 ft




Scale:
0 2 4 6 8
Miles
R-1
R-100
R-20 N
-R-30
Soth Lake Worth Inlet
N R-80
N~iN[R-110
\\\: Boca Roton Inlet

SHWL Change Rate (ft/yr) Using (1974-1996) Data

Figure PAL- 1

Annual SHWL Change Rates With Deviations Along the Coastline of Palm Beach County.




County: Palm Beach Using (1974-1996) Data

DEP
Monument-ID
R-001 R-003 R-004 R-006 R-009
R-010 R-012 R-015 R-016 T-018
R-021 T-027 R-029 R-030 R-033
R-036 R-039 R-040 R-042 R-043
R-045 R-048 R-050 R-051 R-054
R-058 R-060 R-061 R-063 R-066

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

-.1
3.5
.3
3.1
-3.5
-4.5
-3.9
5.7
2.0
-.3
.0
-.6
-.5
1.9
-.8
-.7
-2.5
.2
.3
-.6
.0
3.1
-.9
2.5 2.3
-7.3
-3.6
-2.4
2.8 2.0

5.8
.5
9.4
5.7 23.7
32.4 49.9 72.9 17.4 13.9
.2
13.9
2.7 7.4 19.5
21.9 14.4
5.6 22.9
6.7
29.8 13.3
7.3 9.9
7.1
12.7 11.3
6.5 9.3
6.9

Continued on Next Page ...

PAL-3




County: Palm Beach Using (1974-1996) Data

DEP
Monument-ID
R-067 R-069 R-070 R-072 R-075
R-078 R-080 R-081 R-084 R-087
R-090 R-091 R-093 R-096 R-099
R-100 R-102 R-105 R-108 R-111
R-113 R-114 R-118 R-120 R-121
R-123 R-126 R-129 R-130 R-132

SHWL Change Rate(ft/yr)
4.8 6.7 4.7
.1
4.9
.7
-.8
.1
-.6
1.3
2.5 3.1 2.8 8.4
.0
3.5
.0
1.0 -.6
.5
-1.3
2.6 2.3 2.1
3.5
3.0 3.3 1.2
3.0 1.5

Std.Deviation
(ft)
49.3 20.4 11.6 29.7
7.9
32.5
9.3
10.8 12.1 21.2
23.9
4.9 12.2 81.1
.6
1.6
.8
6.2
16.7
3.8
2.1 4.1 2.6
22.2
3.6

14.3
7.8 29.7 8.5 9.2

No of Data
Points
3 4 3 6 3
6 3 4 6 4
6 3 4 5 4
3 6 4 5 4
3 4 3 5 3
4 5 4 3 5

Continued on Next Page ...

PAL-4




County: Palm Beach Using (1974-1996) Data

DEP
Monument-ID
R-135 R-137 R-138 R-139 R-141
T-144 R-147 R-150 R-153 R-155
R-156 R-159 R-160 T-162 R-165
T-168 R-171 R-174 R-175 R-177
R-180 R-182 T-183
R-186 R-189
R-190 R-192 R-194 R-195 R-198

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

2.0
4.5
-.8
-4.8
.5
-2.3
4.8 3.9 1.9
-2.4
-3.1
-1.5
-3.2
-.5
.2
1.5 3.0 6.9
3.5 6.1
5.4
8.9 13.6
8.5 6.2
5.4
3.5 2.8 2.8
-.4

16.3 14 .1
7.6 7.9 2.7
1.7 2.2 8.1 12.3 8.0
9.3 16.4 5.2
8.0 10.6
12.9 10.4
9.1 4.5 23.2
26.5
3.8 12.3 12.6
7.9
7.9 6.2 3.8 24.5
4.8

Continued on Next Page ...

PAL 5




County: Palm Beach Using (1974-1996) Data

DEP
Monument-ID
R-201 R-204 R-206 R-207 R-209
R-210 T-213 R-216 R-218 R-219
R-221 R-222 T-225 R-226 R-227

SHWL Change Rate(ft/yr)
-.4
3.1 4.6 -3.6
6.8
3.3 1.0 1.9
-.1
.3
7.0 -2.5
-10.8
2.8 1.1

Std.Deviation No of Data
(ft) Points

5.0
27.6 50.2 17.5
8.7
36.5 16.5
4.0 8.1 5.2
1.5 16.7 10.9 11.5 9.6

PAL -6




SHWL CHANGE CHARACTERISTICS FOR
BROWARD COUNTY

BRO-1

Total Shoreline Length: 24 miles
Total Number of Monuments: 128
Beach Profile Survey Period in Years: 1975-1998 Average SHWL Change Rate: 1.09 ft/yr
Average Standard Deviation: 22.13 ft
Average SHWL Elevation (wrt NGVD): 5.71 ft




Scale:
0 2 4 6 8
Miles

SHWL Change Rate (ft/yr) Using (1975-1998) Data

Std Dev Scale in Feet
dU!Aap PI0 5
O
0 50

Figure BRO- 1

Annual SHWL Change Rates With Deviations Along the Coastline of Broward County.

BRO-2

R-1
N
R-10
-R 20

R-30 R-40
R-50

R-60 R-70 R-80

Everglades

R-90 R-100
-R-110
- R-120




County: Broward Using (1975-1998) Data
DEP SHWL Change Std.Deviation No of Data
Monument-ID Rate(ft/yr) (ft) Points

R-001 R-002 R-003 R-004 R-005
R-006 R-007 R-008 R-009 R-010
R-011 R-012 R-013 R-014 R-015
R-016 R-017 R-018 R-019
R-020
T-021 T-022 R-023 R-024 R-025
T-026 R-026 R-027 R-028 R-029

2.3 1.9
.4
.1
.8
2.0 3.2
2.1 2.8 2.7
.9
.5
-.3
-.7
-.2
2.8
.3
.2
2.1 2.3
2.8 3.5
.7
-.4
2.9
6.8 19.9
6.7 8.8 12.1

5.3
8.9 3.0
19.6 6.6
15.9 44.0
38.8 49.9 46.6
37.3 15.5 14.3 13.2 14.3
16.8 18.5 14.2
7.1 10.9
4.4 14.6 9.3 13.1 50.0
47.8
6.6 22.3 26.4 48.9

Continued on Next Page ...

BRO-3




County: Broward Using (1975-1998) Data

DEP
Monument-ID
R-030 R-031 R-032 T-033 R-034
R-035 R-036 R-037 R-038 R-039
R-040 R-041 T-042 R-043 R-044
R-045 R-046 R-047 R-048 R-049
R-050 R-051 T-052 R-053 R-054
R-055 R-056 R-057 R-058 R-059

SHWL Change Rate(ft/yr)
9.5 6.5 5.9 5.1 2.7
3.6 1.9 2.4 1.5
.3
-1.5
-.4
.3
3.4 5.1
5.4 4.4 4.4 3.6 2.6
3.3 2.1
.0
1.3 1.1
1.0
.9
.4
.3
-1.4

Std.Deviation No of Data
(ft) Points

40.8 30.6 17.3 24.8 9.4
21.0
26.2 28.8 34.6 31.9
25.4 17.5 25.1 28.0 23.6
24.6 28.0 24.2 27.6 37.0
40.2 35.1 27.1
26.9 19.0

2.5 3.9 7.4 6.8 8.2

Continued on Next Page ...

BRO-4




County: Broward Using (1975-1998) Data

DEP
Monument-ID
R-060 R-061 R-062 T-063 R-064
T-065 R-066 R-067 R-068 T-069
R-070 R-071 R-072 R-073 R-074
R-075 R-076 R-077 R-078 R-079
R-080 R-081 R-082 R-083 R-084
R-086 R-087 R-088 T-089 T-090

SHWL Change Rate(ft/yr)
.2
-.1
.4
.4
.2
1.3 -1.6
2.0
.9
.4
-.1
.1
1.7
.1
-.7
1.8 4.5 4.2 1.6 1.4
6.4 1.4 4.9 5.9 5.6
-.9
-12.3
-13.0
-4.0
-2.4

Std.Deviation No of Data
(ft) Points

8.9 5.4 8.9
2.3 4.4
2.0 25.5 35.5
1.0 7.4
21.4
.9
7.8 6.6 5.9
8.2
6.6 7.6 4.3 11.4
10.5 17.4 15.4 17.0 19.2
13.8 12.7
4.6 11.7 7.4

Continued on Next Page ...

BRO-5




County: Broward Using (1975-1998) Data

DEP
Monument-ID
T-091 R-092 R-093 R-094 R-095
R-096 T-097 R-098 R-099 R-100
R-101 T-102 R-103 R-104 R-105
R-106 R-107 R-108 R-109 R-110
T-111 T-112 R-113 T-114 T-115
R-116 R-117 T-118
R-119
R-120T

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

2.5 2.2 1.8
2.6 1.4
-.3
-.4
-2.1
-1.9
-1.3
-12.0
-.6
.0
1.0 .9
-.2
.9
.9
.8
2.3
1.2
.7
-4.1
.2
-.3
1.6
4.2 5.6
2.2
-8.0

41.3 29.9 25.5 8.2
5.8
4.6 6.5 9.5
4.8 16.8
49.9 56.5
40.3 36.8 32.8
34.5 26.8 25.6 23.0 34.2
27.3 37.1 37.7 38.3 52.8
39.4 25.8 41.8 33.8 19.1

Continued on Next Page ...

BRO-6




County: Broward Using (1975-1998) Data

DEP SHWL Change Std.Deviation No of Data
Monument-ID Rate(ft/yr) (ft) Points
R-121 -.7 53.1 8
R-122 -2.8 49.0 9
R-123 -2.7 48.5 8
R-124 -.8 25.5 8
R-125 -.2 68.6 9
R-126 -15.7 8.5 3
R-127 -.3 51.5 8
R-128 1.6 15.1 9

BRO-7




SHWL CHANGE CHARACTERISTICS FOR
DADE COUNTY

DAD-1

Total Shoreline Length: 21 miles
Total Number of Monuments: 112
Beach Profile Survey Period in Years: 1980-1998 Average SHWL Change Rate: -0.12 ft/yr
Average Standard Deviation: 24.35 ft
Average SHWL Elevation (wrt NGVD): 5.27 ft




Scale:
0 2 4 6
Miles

SHWL Change Rate (ft/yr) Using (1980-1998) Data

R-1I
S-10 R-20
f2 Bakers Haulover Cut CO5
t R-30

R-40
- R-50

- R-60

Government Cut
Norris Cut
R-80
R-90
- R-100
R-110
Biscayne Channel

/-..
N 2
/
C /I

C
lJ0a~

( 1'

A U! AaG PIE;

TEEL

Std Dev Scale in Feet D 100

Figure DAD- 1 Annual SHWL Change Rates With Deviations Along the Coastline of Dade County.
DAD-2

I . . I . . I




County: Dade Using (1980-1998) Data

DEP
Monument ID
R-001 R-002 R-003 R-004 T-005
R-006 R-007 R-008 R-009 R-010
R-011 R-012 R-013 R-014 R-015
R-016 R-017 R-018 R-019 R-020
T-021 R-022 R-023 R-024 R-025
R-026 R-027 R-028 R-029 R-030

SHWL Change Rate(ft/yr)
-.5
3.4 2.2 4.9
.7
2.1 2.1 9.1 6.4 4.8
5.3 -4.1
5.4 4.3 6.8
4.6 2.4 1.6 4.1 2.8
-2.2
2.2 -7.3
6.9 6.3
6.2 1.0 -1.5
-2.5
-9.1

Std.Deviation No of Data
(ft) Points

6.5 6.6
9.9 10.4 14.4
11.9 8.3 32.0
31.4 23.3
20.0 8.0 22.9 13.4 24.0
10.9
4.4 26.5 16.8 7.3
25.1 6.4 32.0 14.0
10.0
25.4 21.6 31.8 33.8 37.5

Continued on Next Page ...

DAD -3




County: Dade Using (1980-1998) Data

DEP
Monument-ID
R-031 R-032 R-033 R-034 R-035
R-036 T-037 T-038 T-039 R-040
R-041 R-042 R-043 R-044 R-045
T-046 R-047 R-048 R-049 R-050
R-051 R-052 R-053 R-054 R-055
R-056 R-057 R-058 R-059 R-060

SHWL Change Std.Deviation No of Data Rate(ft/yr) (ft) Points

-8.8
-7.3
-7.9
-8.6
-10.2
-9.7
-6.6
-3.7
-3.9
-4.0
-10.8
-2.3
-4.5
-5.4
-4.2
-8.1
-9.8
-6.3
-10.8
-17.5
-7.7
-6.2
-9.3
-.7
-6.6
-6.0
-1.5
-8.7
-13.3
-8.4

25.9 8.8
11.2 14 .1 14.8
7.3 11.5
7.5 12.8 15.4
70.0
4.9 12.1
7.6 9.4
9.8 10.7 14.7 37.3 30.9
6.7 5.2 59.2 63.1
97.8
53.8 70.4 45.3 22.2 23.7

Continued on Next Page ...

DAD-4




County: Dade Using (1980-1998) Data

DEP
Monument-ID
R-061 R-062 R-063 R-064 R-065
R-066 R-067 R-068 R-069 R-070
R-071 R-072 R-073 R-074 T-076
R-077 R-080 R-081 R-082 R-083
R-085 T-086 T-087 R-089 T-093
R-094 R-095 T-096 R-097 R-098

SHWL Change Rate(ft/yr)
-18.1
-17.2
6.7 -2.7
5.8
15.1 28.6 24.5 17.9 20.4
4.8
.2
-7.0
22.9
-.6
.0
.9
-1.8
-2.1
5.0
-9.9
-5.6
-2.1
2.0
.7
1.4 5.7 -2.4
-.4
.0

Std.Deviation No of Data
(ft) Points

54.0
48.5 24.3 117.8
30.0
138.1
33.6 39.1
107.3 31.3
7.9 152.7
27.4 48.5
.0
2.3 1.4
12.4 6.3
4.4
13.4 30.0
2.6 .2
11.9

1.7 3.9 8.8 3.6 .6

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DAD-5