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South Florida Water Management District
3301 Gun Club Road P.O. Box 24680 West Palm Beach. FL 33416-4680 (407) 686-8800 FL WATS 1-800-432-2045
L M. "Buddy" Blain, Esquire
Blain and Cone, P.A.
202 Madison Street
Tampa, Florida 33602
Dear Mr. B4ainr &JK^
SUBJECT: Kissimmee River Safe Upland line
Enclosed are the maps and definitions that you requested from Bill Malone. The safe
upland line has been approximated on the maps for your review. If you have any questions
please call Bill Malone at (407) 687-6536 or me at 687-6846.
Morton "Butch" Horn
Chief of Land Acquisition
Real Estate Division
Allan MUledge. Chairman Miami
Valerie Boyd. Vice Chairman Naples
Ken Ad4ms West Palm Beach
James E. Nail Fort Lauderdale
Annie Betancourt Miami
Franklin B. Mann Fort Myers
Leah G. Schad West Palm Beach
Frank Williamson. Jr. Okeechobee
Eugene K. Pettis Fort Lauderdale
Tilford C. Creel. Executive Director
Thomas K. MacVicar.Deputy Executive Direct,-
MAPPING THE "SAFE UPLAND LINE" IN THE KISSIMMEE VALLEY
According to Florida Department of Natural Resources (FDNR), "A.
safe upland line (SUL) is used in lieu of the ordinary high water
line (OHWL) to provide the public with an economical means of
determining a line that may be used for development planning and
other purposes on freshwater lakes and rivers. The OHWL is the
true boundary of the waterbody, the SUL is not. The SUL is
upland of the OHWL and its location is generally based on the
presence of mature upland vegetation. Hydrological data and
soils may also be used to determine the location of the OHWL."
In the case of the Kissimmee River, a SUL was derived from
Shydrologic data. The regulated C-38 canal influenced the nature
of plant communities to the extent that vegetation was ruled out
as a reliable indicator of the SUL within the floodplain.
However, in many places along the rim of the floodplain can be
found strands of mature live oaks, an upland indicator species.
The live oak strands generally follow the SUL derived from
hydrological data and tend to support the location of the line.
There are four water level recorders along the Kissimmee River
having long term data predating the C-38 project. The data
collection period used to determine the SUL scans the years from
1942 to 1963. The data from the water level recorders is used to
calculate stage duration curves which represent cumulative
distribution graphs (Attached). An inundation period of 15% is
used to fix the SUL. This percentage was ascertained through
consultation with FDNR. Based on the pre-pro~-ect data: the SUL
along the Kissimmee River represents a line where water levels
could be expected to reach or exceed 15% of the time. Elevations
of the SUL between water level recorders are determined by
proportional measurement along the natural run of the Kissimmee
The SUL elevations are transferred to the 1":=200'
photogrammetrically derived one foot contour m-ap series covering
the Kissimmee Valley. Early transformations were done manually.
More recently, mapping the SUL is done by computer utilizing a
terrain model developed from a digital form of the one foot
contour map series. Additional field surveys are performed to
supplement the photogrammetrically derived elevations and to
verify accuracy. The SUL is straightened and further defined by
courses of bearings and distances.
/:arl Zeis, Division Director, Surveys/Mapping Division
department of Land Management
Jayantha Obeysekera, Staff Water Resources Engineer,
Water Resources Division, Resource Planning Departmen
Kent toftin, Assistant Director, Water Resources Division
Resource Planning Department
January 2.2, 1988
SUBJECT: Stage-Duration-curves for Lower Kissimmee
Per your request to Kent Loftin, I am sending herewith the pre-
38(1942-1963)- and post-C38(1970-1986) stage-duration curves for
stations"S-65, Fort KiAsimmee, Basinger,..:and;'S-'65E gaging stations.
Please -call me atcX205. if you have any comments or questions on
these plots. .' -
cc: Jorge Marban
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'STIGE-DURRTION CURVES FOR LOWER KISSIMMEE RIVER
S2 3 45 10 20 3
PERCENT TIME CAGE [S
.0 S 60 70 80 90 s8 w so aw
EOUALLED OR EXCEEDED
- ------ ~~-. ~.~-~-~----------~1^~---~l~-~----r~- ~3)1 1 0~..
o STAGE-DURAT I ON CURVES AT S-65E
1 2 346 10 ;20 30 40 60 60 70 BO 90 s wW as
PERCENT TIME STAGE IS EQUALLED OR EXCEEDED
E-URTION CURVES T 65
a, STAGE-DURATION CURVES AT S65
6 l III I | I I U i I I I iI I 5
1 24 20 30 40 GO 60 0 BO s90 osNs r W .9 s9.
PERCENT TIME STIOE IS EQUALLED OR EXCEEDED
1 ,' 4-Y
_ _~ 1_1 ~V~__ I 1_____ ~~II~ i ~------CIUII~-~FIII1--^-(~F I~II