U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
U\KE ISTOKPOGA
HIGHLANDS COUNT/
FLORIDA
EPA REGION IV
WORKING PAPER No, 258
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.P.O. 699-440
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^ REPORT
ON
cj. LAKE ISTOKPOGA
^ HIGHLANDS COUN1Y
1 FLORIDA
§ - EPA REGION IV
WORKING PAPER No, 258
o
WITH THE COOPERATION OF THE
FLDRIDA DEPARTMENT OF ENVIRONMENTAL REGULATION
AND THE
FLORIDA NATIONAL GUARD
DECEMBER, 1977
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i
CONTENTS
Page
Foreword ii
List of Florida Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Sasin Characteristics 4
III. Lake Water Quality Summary 5
IV. Nutrient Loadings 10
V. Literature Reviewed 15
VI. Appendices 16
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11
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide- threat of accelerated eutrophicatiori to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey v/as designed to develop, in conjunction v/ith state
environmental agencies, information on nutrient sources, concentrations,
and impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and state management
practices relating to point-source discharge reduction and non-point
source pollution abatement in lake watersheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophicatiori analysis are based on related, concepts that:
a. A generalized representation or model relating
sources, concentrations, and impacts can be constructed.
b. By applying measurements of relevant parameters
associated with lake degradation, the generalized model
can be transformed into an operational representation of
a lake, its drainage basin, and related nutrients.
c. With such a transformation, an assessment of the
potential for eutrophication control can be made.
LAKE ANALYSIS
In this report, the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented. The report is formatted to provide state environmental
agencies with specific information for basin planning [5303(e)], water
quality criteria/standards review [§303(c)], clean lakes [§314(a,b)"J,
and water quality monitoring [§106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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iii
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation's
fresh water lakes. Likewise, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.
ACKNOWLEDGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Florida Department of Environ-
mental Regulation for professional involvement and to the Florida
National Guard for conducting the tributary sampling phase of the
Survey.
Joseph W. Landers, Jr., Secretary of the Department of Environ-
mental Regulation; John A Redmond, former Director of the Division
of Planning, Technical Assistance, and Grants; and Dr. Tim S. Stuart,
Chief of the Bureau of Water Quality, provided invaluable lake docu-
mentation and counsel during the survey, reviewed the preliminary
reports, and provided critiques most useful in the preparation of this
Working Paper series.
Major General Henry W. McMillan (Retired), then the Adjutant
General of Florida, and Project Officer Colonel Hugo F. Windham,
who directed the volunteer efforts of the Florida National Guard,
are also gratefully acknowledged for their assistance to the Survey.
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1v
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF FLORIDA
LAKE NAME
Alligator
Apopka
Banana
Crescent
Doctors
Dora
East Tohopekaliga
Effie
Eloise
George
Gibson
Glenada
Griffin
Maines
Hancock
Horseshoe
Howel1
Istokpoga
Jessie
Oessup
Kissimmee
Lawne
Lulu
Marion
Minnehaha
Minneola
Monroe
Munson
Okeechobee
Poinsett
Reedy
Seminole
Semi no!e
South
Talquin
Tarpon
Thonotosassa
Tohopekaliga
Trout
VJeohyakapka
Yale
COUNTY
Columbia
Lake, Orange
Polk
Flagler, Putnam
Clay
Lake
Osceola
Polk
Polk
Putnam, Volusia
Polk
Highlands
Lake
Polk
Polk
Semi nole
Orange, Seminole
Highlands
Polk
Seminole
Osceola
Orange
Polk
Polk
Orange
Lake
Seminole, Volusia
Leon
Glades, Hendi-y, Martin,
Okeechobee, Palm Beach
Brevard, Orange, Osceola
Polk
Jackson, FL; Decatur,
Seminole, GA
Pine!las
Brevard
Gs.dr.den, Leon
Pine!las
IVUlsbo rough
Osceola
Lake
Pol k
Lake
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LAKE ISTOKPOGA
STORE! NO. 1221
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate Lake Istokpoga is rneso-eutrophic. It
ranked sixth in overall trophic quality when the 41 Florida
lakes sampled in 1973 were compared using a combination of
six parameters*. Six of the lakes had less median total phos-
phorus, four had less and one had the same median dissolved
phosphorus, nine had less and one had the same median inorganic
nitrogen, three had less mean chlorophyll a^ and 14 had greater
mean Secchi disc transparency.
Survey limnologists observed surface concentrations of algae
at stations 4, 5, and 6 in March, and emergent vegetation was
noted in the shallow areas at all stations.
B. Rate-Limiting Nutrient:
The results of the algal assays indicate that stations 1, 2,
and 3 were phosphorus limited and stations 4, 5, and 6 were nitro-
gen limited at the time the samples were collected (03/12/73).
The lake data indicate a temporal and spatial combination of
limiting nutrients. Generally, those sites nearest the nutrient
point sources were nitrogen limited, while the sites further
away tended toward phosphorus limitation.
* See Appendix A.
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2
C. Nutrient Controllability:
1. Point sources—It is estimated that point sources,
including septic tanks, contributed 7.6% of the total phosphorus
and 1.1% of the total nitrogen inputs to Lake Istokpoga during
the Survey sampling year. However, following termination of
sampling, the effluent of the Sebring city wastewater treatment
plant was diverted to seepage-evaporation pond and no longer
impacts the lake.
The sampling year phosphorus loading of 0.30 g/m2 is equiva-
lent to that proposed by Vollenweider (Vollenweider and Dillon,
1974) as a mesotrophic loading. However, the trophic condition
of the lake and unquantifiable "non-point" sources (see below)
indicate the loading may have been underestimated, particularly
since Florida lakes may assimilate phosphorus at higher levels
than those suggested by Vollenweider (see page 14).
2. Non-point sources—It is estimated that non-point sources
contributed 92.4% of the total phosphorus and 98.9% of the total
nitrogen loads to the lake during the sampling year.
Truck farming, citrus production, and cattle ranching are
major agricultural land uses in the Arbuckle Creek drainage,
but the relatively low nutrient exports of the stream (page 13)
indicate minimal nutrient impact by those activities during the
sampling year. However, precipitation was well below normal
during the year; but in years of normal or above normal rainfall,
those sources may contribute significant amounts of nutrients to
the lake.
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3
Two probable but unquantified sources of nutrients are
the muck and upland dewatering discharges to the lake during
the construction of the large Spring Lake subdivision on the
northern shores of Lake Istokpoga and the extensive and expanding
muck farm operations along the southern shore (Stuart, 1976).
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphometry:
1. Surface area: 112.07 kilometers2.
2. Mean depth: 1.8 meters.
3. Maximum depth: 2.7 meters.
4. Volume: 201.726 x 106 m3.
5. Mean hydraulic retention time: 155 days (based on outlet flow).
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Josephine Creek 370.4 3.52
Arbuckle Creek 981.6 10.39
Minor tributaries &
immediate drainage - 108.0 1.12
Totals 1,460.0 15.03
2. Outlet -
Istokpoga Canal (C-l) 0.0 1.37
Canal C-41-A, overflow at
R.R., seepage 1.572.1 13.66
Total 1,572.1** 15.03**
C. Precipitation***:
1. Year of sampling: 126.9 centimeters.
2. Mean annual: 143.5 centimeters.
t Table of metric conversions—Appendix B.
tt No bathymetric maps available. Surface area from FL Game & Freshwater
Fish Comm. (Anonymous, 1972); depths estimated from soundings reported
in Appendix D.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of lake; outflow adjusted to equal sum of inflows.
*** See Working Paper No. 175.
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5
III. WATER QUALITY SUMMARY
Lake Istokpoga was sampled three times in 1973 by means of a
pontoon-equipped Huey helicopter. Each time, samples for physical
and chemical parameters were collected from six stations on the lake
and from one or more depths at each station (see map, page v). During
each visit, a single depth-integrated (near bottom to surface) sample
was composited from the stations for phytoplankton identification and
enumeration; and during the first visit, two 18.9-liter depth-integrated
samples were composited for algal assays (stations 1, 2, and 3 were
combined in one sample; and stations 4, 5, and 6 were combined in the
other). Also each time, a depth-integrated sample was collected from
each of the stations for chlorophyll a^ analysis. The maximum depth
sampled was 1.5 meters at all stations except station 4 (1.2 meters).
The sampling results are presented in full in Appendix D and are
ummarized in the following table.
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PARAMETER
TEMP (C)
DISS OXY (MG/L)
CNOCTVY (MCROMO)
Pri (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
ORTHO P (MG/L)
N02+N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/D
SECCHI (METERS)
A.. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 3/12/73)
6 SITES
RANGE
25.2 - 28.1
7.4 - 8.9
120. - 140.
7.2 - 9.0
10. - 10.
0.020 - 0.091
0.003 - 0.054
0.040 - 0.100
0.040 - 0.070
0.700 - 1.30C
0.080 - 0.160
0.740 - 1.350
2.4 - 6.0
0.6 - 1.9
CHEMICAL CHARACTERISTICS FOR
STORET CODE 1221
LAKE ISTOKPOGA
2ND SAMPLING ( 9/ 4/73)
6 SITES
3RD SAMPLING (ll/ 6/73)
6 SITES
MEAN
26.2
7.9
132.
7.9
10.
0.037
0.013
0.0b3
0.053
0.875
0.117
0.93"
4.8
1.5
MEDIAN
26.0
7.7
130.
7.0
10.
0.032
O.OOo
0.060
0.055
O.dSO
O.lOb
0.910
5.4
1.6
RANGE
29.4
6.4
100.
7.0
10.
0.030
0.008
0.060
0.070
1.300
0.130
1.400
8.7
0.5
- 30.0
7.6
- 130.
8.6
11.
- 0.051
- 0.024
- 0.100
- 0.120
- 1.600
- 0.220
- 1.700
- 14.5
0.9
MEAN
29.7
7.1
114.
7.6
10.
0.038
0.014
0.085
0.095
1.450
0.180
1.535
11.4
0.7
MEDIAN
29.6
7.2
113.
7.3
10.
0.037
0.013
0.090
0.095
1.400
0.180
1.475
11.6
0.7
RANGE
24.7
7.4
91.
6.5
10.
0.053
0.010
0.030
0.040
0.900
0.080
0.990
2.4
0.5
- 25.6
8.0
- 100.
7.2
11.
- 0.066
- 0.024
- 0.110
- 0.060
- 1.300
- 0.170
- 1.370
5.9
0.8
MEAN
25.0
7.5
96.
6.8
10.
0.057
0.015
0.060
0.056
1.089
0.116
1.149
3.6
0.5
MEDIAN
24.8
1 7.4
97.
6.8
10.
0.056
0.012
0.060
0.060
1.100
0.110
1.150
3.3
0.5
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
03/12/73
09/04/73
11/06/73
2. Chlorophyll a^ -
Sampling
Date
03/12/73
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Chroococcus sp.
Flagellates
Dinobryon sp.
Synedra sp.
Lyngbya sp.
Other genera
Total
Lyngbya sp_.
Microcystis sp.
Apjianocapsa sp^.
Melosira sp.
Pennate diatoms
Other genera
Total
Microcystis sp.
Melosira sp.
Flagellates
Spermatozoopsis sjj,
Merismopedia sp.
Other genera
Algal units
per ml
Total
1
596
678
632
196
166
753
Station
Number
1
2
3
4
5
6
4,021
4,427
4,427
962
770
670
5,039
16,295
2,618
2,310
693
539
539
3,234
9,933
Chlorophyll
(yg/D
5.5
5.3
2.4
6.0
4.1
5.6
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8
Sampling
Date
09/04/73
11/06/73
Station
Number
1
2
3
4
5
6
1
2
3
4
5
6
C. Limiting Nutrient Study:
1. Filtered and nutrient spiked -
a. Stations 1, 2, and 3 -
Ortho P
Cone, (mg/1)
Spike (mg/1)
Control
0.050
0.050 P + 1.0 N
1.0 N
b. Stations 4, 5, and 6 -
Chlorophyll a
(yg/i)
11.2
13.0
8.7
8.7
12.1
14.5
3.5
3.2
2.7
2.4
5.9
3.9
Inorganic N
Cone, (mg/1)
Maximum yield
(mg/1-dry wt.)
0.012
0.062
0.062
0.012
0.172
0.172
1.172
1.172
0.6
3.2
15.2
0.4
Ortho P
Cone, (mg/1)
Inorganic N
Cone, (mg/1)
Maximum yield
(mg/1-dry wt.)
0.016
0.066
0.066
0.016
0.120
0.120
1.120
1.120
2.8
3.3
20.9
4.6
Spike (mg/1)
Control
0.050
0.050 P + 1.0 N
1.0 N
Discussion -
The control yields of the assay alga, Selenastrum capri-
cornutum, indicate that the potential primary productivity
of Lake Istokpoga was moderately high at the time the samples
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9
were collected (03/12/73).
The results of the assay of the combined sample from
stations 1, 2, and 3 indicate phosphorus limitation, but
the results of the assay of the combined sample from stations
4, 5, and 6 indicate limitation by nitrogen.
The lake data indicate a temporal and spatial combination
of limiting nutrients, although it will be noted that the
stations nearest the nutrient point sources tended toward
nitrogen limitation while the stations further away tended
toward phosphorus limitation.
Following is a tabulation of the mean inorganic nitrogen/
orthophosphorus ratios for each of the sampling stations and
times with the indicated limiting nutrient in parentheses.
Station 03/12/73 09/04/73 11/06/73
1 24/1 (P) 13/1 (N?) 6/1 (N)
2 15/1 (P) 26/1 (P) 10/1 (N)
3 22/1 (P) 24/1 (P) 6/1 (N)
4 3/1 (N) 7/1 (N) 7/1 (N)
5 17/1 (P) 13/1 (N?) 4/1 (N)
6 18/1 (P) 9/1 (N) 12/1 (N)
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10
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Florida National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v). Sampling was begun in
March, 1973, and was completed in February, 1974.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Florida District Office of the U.S. Geological Survey for the
tributary .sites nearest the lake. Flow out of the lake was determined
to occur at Istokpoga Canal, Drainage Canal C-41-A, seepage at the dike,
and overflow at the railroad (Anderson, 1974).
The total outflow from Lake Istokpoga was calculated in the
following way: first, the total outflow was assumed to equal the
total inflow; second, the flow at station C-l (1.37 m3/sec) was sub-
tracted from the total outflow (15.03 m3/sec); and third, the remainder
(13.66 m3/sec) was attributed to Canal C-41-A, overflow at the railroad,
and seepage at the dike.
In this report, nutrient loads for Arbuckle Creek (station B-l)
were determined by using a modification of a U.S. Geological Survey
computer program for calculating stream loadings*. Nutrient loads
shown are those measured minus point-source loads, if any.
*'See Working Paper No. 175.
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11
Josephine Creek (station A-l) was not sampled because the site
was inaccessible. Nutrient loads for this stream were computed using
the nutrient loads, in kg/km2/yr, at station B-l and multiplying by
the A-l drainage area in km2.
Nutrient loads for station C-l were estimated using the mean
stream concentrations (12 samples) and the mean annual flow.
Nutrient loads for the drainage Canal C-41--A, overflow, and
seepage were estimated using the mean concentrations of all lake
sampling stations (i.e., the means of 27 data points through time
and depth) and multiplying the means by the mean annual outflow.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the nutrient loads,
in kg/km2/yr, at station B-l and multiplying by the ZZ area in km2.
During the Survey sampling year, the operators of the Sebring
Airport and the City of Sebring wastewater treatment plants provided
monthly effluent samples and corresponding flow data. However, the
City of Sebring wastewater treatment plant no longer discharges to
Arbuckle Creek (Stuart, 1976).
A. Waste Sources:
1. Known municipal -
Pop. Mean Flow Receiving
Name Served Treatment (m3/d) Water
Sebring Airport 450* tr. filter 260.7 Arbuckle Creek
+ pond
City of Sebring 6,000** act. sludge 738.8 Arbuckle Creek
+ pond
2. Known industrial - None
* Treatment plant questionnaire; includes pretreated tannery waste.
** Parker, 1975.
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B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Josephine Creek 6,665 19.8
Arbuckle Creek 17,510 52.1
b. Minor tributaries & inmediate
drainage (non-point load) - 1,945 5.8
c. Known municipal STP's -
Sebring Airport 35 0.1
City of Sebring 2,485 7.4
d. Septic tanks* - 45 0.1
e. Known industrial - None
f. Direct precipitation** - 4,930 14.7
Total 33,615 100.0
2. Outputs -
Istokpoga Canal 6,005 -, 9(
Overflow, seepage, Canal C-41-A 19,565 *
3. Net annual P accumulation - 8,045 kg.
* Estimate based on 153 lakeshore dwellings; see Working Paper No. 175.
** Brezonik and Shannon, 1971.
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13
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Josephine Creek 132,975 22.3
Arbuckle Creek 352,090 59.1
b. Minor tributaries & immediate
drainage (non-point load) - 38,770 6.5
c_ Known municipal STP's -
Sebring Airport 1,550 0.3
City of Sebring 3,365 0.6
d. Septic tanks* - 1,630 0.3
e. Known industrial - None
f. Direct precipitation** - 65,000 10.9
Total 595,380 100.0
2. Outputs -
Istokpoga Canal 60,220 , r(-7 ETC
Overflow, seepage, Canal C-41-A 507,355 } ™'>w
3. Net annual N accumulation - 27,805 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Arbuckle Creek 18 359
* Estimate based on 153 lakeshore dwellings; see Working Paper No. 175.
** Brezonik and Shannon, 1971.
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14
E. Yearly Loads:
In the following table, the existing phosphorus loadings
are compared to those proposed by Vollenweider (Vollenweider
and Dillon, 1974). Note, however, that Florida lakes may be
able to assimilate phosphorus at a somewhat higher level than
that suggested by Vollenweider (Shannon and Brezonik, 1972).
Essentially, Vollenweider's "dangerous" loading is one at
which the receiving water would become eutrophic or remain
eutrophic; his "permissible" loading is that which would result
in the receiving water remaining oligotrophic or becoming
oligotrophic if morphometry permitted. A mesotrophic loading
would be considered one between "dangerous" and "permissible".
Vollenweider's model may not be applicable to water bodies
with short hydraulic retention times. /
Total Phosphorus Total Nitrogen
Total Accumulated Total Accumulated
grams/m2/yr 0.30 0.07 5.3 0.2
Vollenweider phosphorus loadings
(g/m2/yr) based on estimated mean depth and
hydraulic retention time of Lake Istokpoga:
"Dangerous" (eutrophic loading) 0.40
"Permissible" (oligotrophic loading) 0.20
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15
V. LITERATURE REVIEWED
Anderson, Warren, 1974. Personal communication (tributary flow
information for stations C-l and Canal C-41-A). U.S. Geol.
Surv., Orlando.
Anonymous, 1972. Water quality investigations, 1971-72 annual
report. Fed. Aid in Fish Restor., Dingell-Johnson Proj. No.
F-21-6, FL Game & Fresh Water Fish Comm., Tallahassee.
Brezonik, Patrick L., and Earl E. Shannon, 1971. Trophic state of
lakes in north central Florida. Publ. No. 13, FL Water Resources
Res. Ctr., U. of FL, Gainesville.
Parker, David M., 1975. Personal communication (municipal sewage
treatment plant information). Sebring.
Shannon, Earl E., and Patrick L. Brezonik, 1972. Relationships
between lake trophic state and nitrogen and phosphorus
loading rates. Env. Sci. & Techn. 6_ (8): 719-725.
Stuart, Tim S., 1976. Personal communication (review of preliminary
report), FL Dept. of Env. Reg., Tallahassee.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Publ. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
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VI. APPENDICES
16
APPENDIX A
LAKE RANKINGS
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LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
1201 ALLIGATOR LAKE
1202 LAKE APOPKA
1203 LAKE BANANA
1206 LAKE CRESCENT
1207 DOCTORS LAKE
1208 LAKE OORA
1209 LAKE EFFIE
1210 LAKE GEORGE
1211 LAKE GIBSON
1212 GLENADA LAKE
1210 LAKE GRIFFIN
1215 LAKE HAINES
1217 LAKE HANCOCK
1219 LAKE HORSESHOE
1220 LAKE HOWELL
1221 LAKE ISTOKPOGA
1223 LAKE JF.SSUP
1224 LAKE KISSIMMEE
1227 LAKE LULU
1228 LAKE MARION
1229 LAKE MINNEHAHA
1230 LAKE MINNEOLA
1231 LAKE MONROE
1232 LAKE OKEECHOBEE
1234 LAKE POINSETT
1236 LAKE REEDY
1238 LAKE SOUTH
1239 LAKE TALOUIN
MEDIAN
TOTAL P
0.620
0.102
0.660
0.065
0.084
0.102
1.480
0.129
0.167
0.134
0.119
0.063
0.772
0.034
1.260
0.039
0.492
0.034
1.490
0.044
0.038
0.018
0.188
0.063
0.085
0.033
0.074
0.085
MEDIAN
INORG N
0.260
0.230
0.260
0.130
0.120
0.240
0.410
0.165
0.115
0.165
0.260
0.115
0.195
0.130
0.285
0.120
0.290
0.145
1.065
0.260
0.080
0.070
0.300
0.185
0.150
0.330
0.130
0.290
500-
MEAN SEC
474.000
484.176
482.667
473.889
465.555
482.889
489.000
469.308
470.000
454.167
481.333
462.667
483.500
459.000
464.000
464.222
487.000
463.667
483.000
468.833
435.000
406.333
474.555
472.366
469.000
468.500
464.000
462.167
MEAN
CHLORA
87.733
46.611
208.600
10.211
27.100
59.978
261.433
35.000
19.675
27.667
66.855
26.567
97.900
12.067
54.117
6.594
76.550
24.142
276.566
29.967
8.733
3.333
14.225
14.524
6.500
34.837
23.167
9.483
15-
MIN 00
13.100
8.200
3.600
10.200
10.600
7.400
15.000
11.000
10.200
14.700
6.600
10.600
5.600
11.500
9.000
8.600
7.600
8.800
14.300
7.600
7.700
7.400
10.800
9.800
10.600
10.600
9.000
14.400
MEDIAN
DISS ORTHO P
0.386
0.019
0.293
0.033
0.026
0.022
0.950
0.063
0.069
0.072
0.038
0.014
0.1S8
0.023
1.175
0.010
0.288
0.007
1.030
0.016
0.012
0.009
0.128
0.010
0.051
0.008
0.028
0.031
-------
LAKE DATA YO 8E USED IN RANKINGS
LAKE
CODE LAKE NAME
12*0 LAKE THONOTOSASSA
1241 LAKE TOHOPEKALIGA
1242 TROUT LAKE
1243 LAKE WEOHYAKAPKA
1246 LAKE VALE
1247 LAKE MUNSON
124B LAKE SEMIMOLE
1269 LAKE LAMNE
1250 LAKE TARPON
1252 LAKE ELOISE
1258 LAKE JESSIE
1261 EAST LAKE TOHOPEKALIGA
1264 PAYNE'S PRAIRIE LAKE WO
MEDIA ,
TOTAL P
Oo695
0.246
1.110
0.047
0.027
1.475
0.234
2.560
0.041
Oo486
0.051
0.042
1.260
MEDIAN
INORG N
0.095
0.200
0.650
0.080
0.160
0.925
00175
1.350
0.070
0.170
0.090
0.070
0.140
500-
MEAN SEC
466.167
472.917
472.000
458.667
441.000
486.667
473.833
494.667
400.889
465.333
452 066 7
440.833
476»000
MEAN
CHLORA
37.700
30.633
76.967
7.767
25.367
140.317
102.000
84.900
6.867
70.233
26.300
So 167
98.200
15-
MIN DO
10.200
10.500
12.900
8.200
7.600
12.200
8.600
10.400
9.000
12.200
10.800
9.400
7.400
MEOli
OISS ORTt
0.565
0.152
0.970
0.011
0.014
0.852
0.026
0.117
0.027
0.339
0.011
0.007
1.210
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
1201 ALLIGATOR LAKE
1202 LAKE APOPKA
1203 LAKE BANANA
1206 LAKE CRESCENT
1207 DOCTORS LAKE
1208 LAKE DORA
1209 LAKE EFFIE
1210 LAKE GEORGE
1211 LAKE GIBSON
1212 GLENADA LAKE
1214 LAKE GRIFFIN
121S LAKE HAINES
1217 LAKE HANCOCK
12!9 LAKE HORSESHOE
1220 LAKE HOWELL
1221 LAKE ISTOKPOGA
1223 LAKE JESSUP
1224 LAKE KISSIMMEC
1227 LAKE LULU
1228 LAKE MARION
1229 LAKE MINNEHAHA
1230 LAKE HINNEOLA
1231 LAKE MONROE
1232 LAKE OKEECHOBEE
123*» LAKE POINSETT
1236 LAKE REEDY
1238 LAKE SOUTH
1239 LAKE TALOUIN
MEDIAN
TOTAL P
25 1
50 (
23 (
65 (
60 (
53 <
5 (
45 (
40 <
43 (
48 (
70 (
18 (
93 (
11 (
85 (
28 (
90 (
3 (
78 (
88 (
100 (
3(9 (
68 (
58 (
95 (
63 (
55 (
10)
20)
9)
26)
24)
21)
2)
18)
16)
17)
19)
28)
7)
37)
4)
34)
11)
36)
1)
31)
35)
40)
15)
27)
23)
38)
25)
22)
MEDIAN
INORG N
29 (
38 (
29 (
70 (
76 (
35 <
10 (
54 (
81 (
54 (
29 (
81 (
43 (
70 <
23 (
76 (
18 (
63 (
3 (
29 (
91 (
98 (
15 (
45 <
60 (
13 (
70 (
20 <
10)
15)
10)
27)
30)
14)
4)
21)
32)
21)
10)
32)
17)
27)
•9)
30)
' 7)
25)
1)
10)
36)
38)
6)
18)
24)
5)
27)
8)
500-
HEAN SEC
30
10
20
33
60
18
3
48
45
es
23
75
13
80
69
65
5
73
IS
53
95
98
28
40
50
55
69
78
( 12)
( 4)
( 8)
( 13)
( 24)
( 7)
( 1)
( 19)
( 18)
( 34)
< 9)
( 30)
( 5)
( 32)
< 27)
( 26)
( 2)
< 29)
( 61
< 21)
< 38)
( 39)
( 11)
( 16)
( 20)
< 22)
{ 27)
( 31)
MEAN
CHLORA
18
38
5
80
55
33
3
43
70
53
30
58
13
78
35
93
25
65
0
50
85
100
75
73
95
45
68
83
( 7)
( 15)
( 2)
( 32)
( 22)
( 13)
I 1)
« 17)
< 28)
( 21)
( 12)
( 23)
( 5)
( 31)
( 14)
( 37)
( 10)
( 26)
( 0)
( 20)
( 34)
( 40)
( 30)
< 29)
( 38)
( 18)
( 27)
I 33)
15-
MIN 00
10 (
74 (
100 (
48 (
34 (
90 (
0 (
23 (
48 (
3 (
95 (
34 <
98 (
20 (
60 (
69 (
83 (
65 (
8 <
83 (
78 (
90 (
26 <
53 (
34 (
34 (
60 (
S (
4)
29)
40)
18)
12)
35)
0)
9)
18)
1)
38)
12)
39)
8)
23)
27)
32)
26)
3)
32)
31)
35)
10)
21)
12)
12)
23)
2)
MEDIAN
OISS ORTHO P
18
70
23
50
56
68
10
43
40
38
48
78
28
65
3
89
25
99
5
73
80
93
33
89
45
95
56
53
<
(
(
(
(
<
{
(
(
(
(
(
<
(
(
(
(
(
(
<
(
(
(
(
(
<
(
(
7)
28)
9)
20)
22)
27)
4)
17)
16)
15)
19)
31)
11)
26)
1)
35)
10)
39)
2)
29)
32)
37)
13)
35)
18)
38)
22)
21)
INOEX
NO
130
280
200
346
341
297
31
256
324
276
273
396
213
406
201
477
184
465
34
366
517
579
215
368
342
337
386
294
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
1240 LAKE THONOTOSASSA
1241 LAKE TOHOPEKALIGA
1242 TROUT LAKE
1243 LAKE WEOHYAKAPKA
1246 LAKE YALE
1247 LAKE HUNSON
1248 LAKE SENIMOLE
1249 LAKE LAWNE
12SO LAKE TARPON
1252 LAKE ELOISE
1358 LAKE JESSIE
1261 EAST LAKE TOHOPEKALIGA
1264 PAYNE'S PRAIRIE LAKE (NO
MEDIAN
TOTAL P
20
33
15
75
98
8
35
0
83
30
73
80
11
( 8)
< 13)
( 6)
( 30)
( 39)
( 3)
( 14)
( 0)
( 33)
( 12)
( 29)
( 32)
( 4)
MEDIAN
INORG N
85 1
40 <
8 <
91 1
58 1
5 I
48 1
0 i
98
50 I
as i
98 '
65 I
! 34)
1 16)
I 3)
1 36)
1 23)
1 2)
1 19)
1 0)
( 38)
I 20)
I 35)
( 38)
1 26)
500-
MEAN SEC
58 1
38 1
43 1
83 I
90 I
8 i
35 i
0 <
100
63 i
88
93
25
1 23)
1 15)
1 17)
I 33)
1 36)
1 3)
I 14)
I 0)
( 40)
( 25)
I 35)
( 37)
1 10)
MEAN
CHLORA
40 1
48 (
23 1
88 1
63 1
8 1
10 1
20 I
90 i
28 1
60 I
98 i
15 <
1 16)
1 19)
1 9)
! 35)
1 25)
! 3)
[ 4)
! 8)
I 36)
1 ID
I 24)
1 39)
1 6)
15-
MIN 00
48
40
13
74
83
16
«9
43
60
16
26
55
90
( 18)
( 16)
( 5)
( 29)
I 32)
< 6)
( 27)
( 17)
( 23)
( 6)
( 10)
( 22)
( 35)
MEDIAN
OISS ORTHO P
15 (
30 (
8 (
84 (
75 (
13 (
63 (
35 (
60 (
20 (
84 (
99 (
0 (
6)
12)
3)
33)
30)
5)
25)
14)
24)
8)
33)
39)
0)
INUEX
NO
266
229
110
495
467
58
260
98
491
207
419
523
206
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
i 1230 LAKE HINNEOLA . 579
Z 1261 EAST LAKE TOHOPEKALIGA 523
3 1229 LAKE MINNEHAHA 517
4 1243 LAKE WEOHYAKAPKA 495
5 1250 LAKE TARPON 491
6 1221 LAKE ISTOKPOGA 477
7 1246 LAKE YALE 467
8 1224 LAKE KISSIMMEE 455
9 1258 LAKE JESSIE 419
10 1219 LAKE HORSESHOE 406
11 1215 LAKE HAINES 396
12 1238 LAKE SOUTH 386
13 1232 LAKE OKEECH08EE 368
14 1228 LAKE MARION 366
15 1206 LAKE CRESCENT 346
16 1234 LAKE POINSETT 342
17 1207 DOCTORS LAKE 341
18 1236 LAKE REEDY 337
19 1211 LAKE GIBSON 324
20 1208 LAKE DORA 297
21 1239 LAKE TALQUIN 294
22 1202 LAKE APOPKA 260
23 1212 GLENADA LAKE 276
24 1214 LAKE GRIFFIN 273
25 1240 LAKE THONOTOSASSA 266
26 1248 LAKE SEMINOLE 260
27 1210 LAKE GEORGE 256
28 1241 LAKE TOHOPEKALIGA 229
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
29
30
31
32
33
34
35
36
37
38
39
40
41
1831
1217
1252
1264
1220
1203
1223
1201
1242
1C49
1247
1227
1209
LAKE MONROE
LAKE HANCOCK
LAKE ELOISE
PAYNE'S PRAIRIE LAKE (NO
LAKE HOWELL
LAKE BANANA
LAKE JESSUP
ALLIGATOR LAKE
TROUT LAKE
LAKE LAWNE
LAKE MUNSON
LAKE LULU
LAKE EFFIE
215
213
207
206
201
200
184
130
110
98
58
34
31
-------
APPENDIX B
CONVERSION FACTORS
-------
CONVERSION FACTORS -
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles.
Meters x 3.281 = feet
Cubic meters x 8.107 x 10 = acre/feet
Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.315 - cubic feet/sec
Centimeters x 0.3937 = inches
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY' FLOW INFORMATION FOR FLOKIDA
8/25/75
LAKE CODE 12?1
LAKE ISTOKPOGA
TOTAL DRAINAGE AREA OF LAKE(SO KM) 1572.1
SUB-DRAINAGE
TRIBUTARY AREA(SO KM)
JAN
FEB
MAR
NORMALIZED FLOWS(CMS)
APR MAY JUN JUL AUG SEP OCT NOV DEC MEAN
1221A1
1221B1
1221C1
1221XX
1221ZZ
370.4
981.6
0.0
1572.1
108.8
2.0*
5.52
0.91
8.92
0.59
2.04
5.69
1.81
9.60
0.62
2.27
7.39
1.78
10.02
0.76
1.81
5.52
0.68
9.77
0.59
1.03
3.54
0.65
7.65
0.37
2.49
8.69
0.54
10.14
0.91
3.91
11.04
0.74
15.01
1.19
5.69
15.29
1.78
19.26
1.70
8.10
23.36
3.88
29.79
2.52
7.11
23.42
2.18
32.22
2.46
3.43
8.98
0.91
21.38
0.99
2.24
5.97
0.59
11.81
0.68
3.52
10.39
1.37
15.49
1.12
SUMMARY
TOTAL DRAINAGE AREA OF LAKE = 1572.1
SUM OF SUB-DRAINAGE AREAS = 1460.8
TOTAL FLOW IN = 196.46
TOTAL FLOW OUT = 185.56
NOTE ««» XX(OUTFLOW)=ISTOKPOGA CANAL* CANAL 41A» OVERFLOW AT RR. SEEPAGE THRU DIK
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
1221A1
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
f>
7
8
9
10
11
12
1
2
73
73
73
73
73
73
73
73
73
73
74
74
73
73
73
73
73
73
73
73
73
73
74
74
19.09
12.94
9.83
1.47
7.14
18.89
35.25
10.14
2.49
2.29
2.52
1.98
1.93
1.13
0.57
1.36
1.36
1.98
5.83
1.98
0.88
0.59
0.34
0.37
18
13
17
14
13
17
14
12
16
14
17
14
18
13
17
14
13
17
14
12
16
14
14
FLOW DAY
19.11
12.97
12.74
1.44
0.0
11.21
48.14
16.42
7.87
0.74
1.70
4.25
3.23
1.73
0.62
1.30
1.76
1.87
6.71
2.49
0.79
0.48
0.23
FLOW DAY
FLOW
-------
TRIBUTARY FLOW INFORMATION FOR FLORIDA
3/35/75
LAKE CODE 1221
LAKE ISTOKPOGA
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR
1221dl
1221ZZ
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
73
73
73
73
73
73
73
73
73
73
74
74
73
73
73
73
73
73
73
73
73
73
74
74
MEAN FLOW DAY
7.16
9.74
6.34
3.68
8.33
21.12
27.35
15.63
4.79
2.58
2.27
2.04
0.74
0.88
0.57
0.40
0.79
1.87
2.66
1.42
0.45
0.25
0.20
0.20
18
13
17
14
13
17
14
12
16
14
17
14
18
13
17
14
13
17
14
12
16
14
17
14
FLOW DAY
6.51
16.14
7.22
2.66
5.52
18.01
30.87
16.68
4.56
2.63
1.84
1.87
0.79
1.44
0.62
0.31
0.59
1.59
3.03
1.53
0.42
0.25
0.17
0.17
FLO« DAY
FLO*
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORE! RETRIEVAL DATE 75/08/25
122101
27 19 04.0 081 17 40.0
LAKE ISTOKPOGA
12055 FLORIDA
DATE
FROM
TO
73/03/10
73/09/04
73/11/06
TIME DEPTH
OF
DAY FEET
17 00 0000
17 00 0005
14 20 0000
14 05 0000
14 05 0004
00010
WATER
TEMP
CENT
25.6
25.6
29.5
25.6
25.5
00300 00077
DO TRANSP
SECCHI
MG/L INCHES
8.9
7.6
7.6
11EPALES
3
2111202
0008 FEET
DEPTH
7
,P
II
S
25
37
20
00094
CNDUCTVY
FIELD
MICROMHO
135
120
130
99
99
00400
PH
SU
7.20
7.30
8.60
7.20
7.20
00410
T ALK
CAC03
MG/L
10K
10K
11
11
11
00610
NH3-N
TOTAL
MG/L
0.070
0.070
0.120
0.060
0.040
00625
TOT KJEL
N
MG/L
0.900
0.900
1.600
1.200
1.000
00630
N02&N03
N-TOTAL
MG/L
0.070
0.080
0.100
0.030
0.040
00671
PHOS-UIS
ORTHO
MG/L P
0.007
O.OOS
0.017
0.015
0.012
DATE
FROM
TO
73/03/10
73/09/04
73/11/06
TIME DEPTH
OF
DAY FEET
17 00 0000
17 00 0005
14 20 0000
14 05 0000
14 05 0004
00665
PHOS-TOT
MG/L P
0.035
0.033
0.040
0.053
0.056
32217
CHLRPHYL
A
UG/L
5.5
11.2
3.5
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/08/25
122102
27 21 54.0 081 17 00.^
CAKE ISTOKPOGA
12055 FLORIDA
DATE
FROM
TO
73/03/12
73/09/04
73/11/06
TIME DEPTH
OF
DAY FEET
10 30 0000
10 30 0005
14 45 0000
14 20 0000
14 20 0005
00010
WATER
TEMP
CENT
25.2
25.2
30.0
24.8
24.7
00300 00077
DO TPANSP CM
SECCHI FIELD
M(i/L INCHES MI
7.7
7.2
7.4
55
30
18
11EPALES
3
2111202
0008 FEET
DEPTH
94
TVY
MHO
120
130
114
97
97
00400
PH
SU
9.00
8.60
8.10
6.80
6.80
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
10K
00610
NH3-N
TOTAL
MG/L
0.060
0.040
0.110
0.060
0.050
00625
TOT KJEL
N
MG/L
1.300
0.700
1.600
1.100
1.000
00630
N02&N03
N-TOTAL
MG/L
0.050
0.060
0.100
0.050
0.060
00671
PHOS-DIS
ORTHO
MG/L P
0.009
0.005
0.008
0.011
0.010
00665 32217
DATE TIME DEPTH PHOS-TOT CHLRPhYL
FROM OF A
TO DAY FEET MG/L P UG/L
73/03/12 10 30 0000 0.033 5.3
10 30 0005 0.025
73/09/04 14 45 0000 0.036 13.0
73/11/06 14 20 0000 0.056 3.2
14 20 0005 0.055
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/08/25
122103
27 20 19.0 081 15 52.0
LAKE ISTOKPOGA
12055 FLORIDA
DATE
FROM
TO
73/03/12
73/09/04
73/11/06
TIME DEPTH
OF
DAY FEET
10 50 0000
10 50 0005
14 35 0000
14 15 0000
00010
WATER
TEMP
CENT
26.5
25.8
29.4
24.9
00300 00077 00094
00 TRANSP CNDUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
7.4
7.2
7.4
72
34
20
130
130
127
98
11EPALES
3
00400
PH
SU
8.30
8.20
7.60
6.70
00410
T ALK
CAC03
MG/L
10K
10K
10
10K
2111202
0008 FEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.050
0.040
0.090
0.050
00625
TOT KJEL
N
MG/L
0.800
0.700
1.300
1.100
00630
N02&N03
N-TOTAL
MG/L
0.050
0.060
0.100
0.060
00671
PHOS-DIS
ORTHO
MG/L P
0.006
0.003
0.008
0.017
DATE
FROM
TO
73/03/12
73/09/04
73/11/06
TIME DEPTH
OF
DAY FEET
10 50 0000
10 50 0005
14 35 0000
1<» 15 0000
00665
PHOS-TOT
MG/L P
0.023
0.020
0.035
O.OS<«
32217
CHLRPHYL
A
UG/L
2.4
8.7
2.7
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/08/25
122104
27 25 35.0 081 16 27.0
LAKE ISTOKPOGA
12055 FLORIDA
DATE
FROM
TO
73/03/12
73/09/04
73/11/06
TIME DEPTH
OF
DAY FEET
11 20 0000
11 20 0004
15 10 0000
16 00 0000
00010
WATER
TEMP
CENT
26.3
25.9
29.7
24.7
00300 00077 00094
DO TRANSP CNDUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
7.6
6.4
7.4
72
18
30
140
140
100
100
11EPALES
3
00400
PH
SU
8.00
7.90
7.00
6.80
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
2111202
0006 FEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.060
0.060
0.080
0.060
00625
TOT KJEL
N
MG/L
1.000
0.700
1.400
0.900
00630
N02&N03
N-TOTAL
MG/L
0.090
0.100
0.080
0.110
00671
PHOS-DIS
ORTHO
MG/L P
0.043
0.054
0.024
0.024
00665 32217
DATE TIME DEPTH PHOS-TOT CHLRPHYL
FROM OF A
TO DAY FEET M(i/L p UG/L
73/03/12 11 20 0000 0.073 6.0
11 20 0004 0.091
73/09/04 15 10 0000 0.051 8.7
73/11/06 16 00 0000 0.054 2.4
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/08/25
122105
27 22 50.0 081 14 38.0
LAKE ISTOKPOGA
12055 FLORIDA
DATE
FROM
TO
73/03/12
73/09/04
73/11/06
TIME DEPTH
OF
DAY FEET
12 00 0000
12 00 0005
15 20 0000
16 05 0000
00010
WATER
TEMP
CENT
28.1
26.8
29.5
25.2
00300 00077 00094
DO TRANSP CNOUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
8.1
7.0
8.0
76
25
20
130
140
103
91
11EPALES
3
00400
PH
SU
7.80
7.70
7.00
6.60
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
2111202
0007 FEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.040
0.0^0
0.070
0.060
00625
TOT KJEL
N
MG/L
0.800
0.700
1.400
1.300
00630
N02&N03
N-TOTAL
MG/L
0.050
0.040
0.060
0.030
00671
PHOS-DIS
ORTHO
MG/L P
0.006
0.004
0.010
0.024
DATE
FROM
TO
73/03/12
73/09/04
73/11/06
TIME DEPTH
OF
DAY FEET
12 00 0000
12 00 0005
15 20 0000
16 05 0000
00665
PHOS-TOT
MG/L P
0.026
0.021
0.039
0.066
32217
CHLRPHYL
A
UG/L
4.1
12.1
5.9
K VALUE KNOWN TO 8E
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/08/25
122106
27 24 21.0 081 19 18.0
LAKE ISTOKPOGA
12055 FLORIDA
DATE
FROM
TO
73/03/12
73/09/04
73/11/06
TIME DEPTH
OF
DAY FEET
12 15 0000
12 15 0004
15 00 0000
15 45 0000
15 45 0005
00010
WATER
TEMP
CENT
26.9
26.1
30.0
24.8
24.8
00300 00077 00094
DO TRANSP CNDUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
7.8
7.4
7.4
54
18
20
130
140
111
93
92
11EPALES
3
00400
PH
SU
7.70
7.60
7.10
6.50
6.50
00410
T ALK
CAC03
MG/L ,
10K
10K
10
10K
10K
2111202
0009
00610
NH3-N
TOTAL
MG/L
0.060
0.050
0.100
0.060
0.060
FEET
00
TOT 1
N
MG
1
1
1
1
0
DEPTH
1.000
1.000
1.400
1.300
900
00630
N02&N03
N-TOTAL
MG/L
0.060
0.050
0.070
0.070
0.090
00671
PHOS-DIS
ORTHO
MG/L P
0.007
O.OOS
0.019
0.012
0.012
DATE
FROM
TO
73/03/12
73/09/04
73/11/06
TIME
OF
DAY
12
12
15
IS
15
15
15
00
45
45
DEPTH
FEET
0000
0004
0000
0000
0005
00665
PHOS-TOT
MG/L
0.
0.
0.
0.
0.
P
033
032
030
056
059
32217
CHLRPHYL
A
UG/L
5.
14.
3.
6
5
9
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 75/08/25
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
73/03/18
73/04/13
73/05/17
73/06/10
73/07/13
73/08/17
73/09/14
73/10/12
73/11/16
73/12/14
74/01/17
74/02/14
10 00
08 30
09 05
09 25
08 30
08 35
09 10
09 15
09 30
10 10
09 20
08 SO
122161
27 26 30.0 081 18 00.0
ARBUCKLE
12 7.5 LORIDA
T/LAKE ISTOKPOGA
ST HWY 700 8ROG SE OF SEBKING AIR TRMNU
11EPALES 2111204
4 0000 FEET DEPTH
0630 00625
&N03 TOT KJEL
OTAL N
G/L MG/L
0.050
0.014
0.026 (
0.032 i
0.035
0.019
0.013
0.032
.280
.180
.840
.950
.050
.050
.100
.000
0.280 0.900
0.400 0.700
0.320 0.700
0.240 0.700
00610 00671 00665
NH3-N PHOS-DIS PH05-TOT
TOTAL ORTHO
MG/L
0.072
0.046
0.270
0.046
0.074
0.044
0.044
0.060
0.076
0.040
0.090
0.025
MG/L P
0.047
0.036
0.029
0.027
0.056
0.058
0.086
0.058
0.028
0.016
0.044
0.015
MG/L P
0.080
0.055
0.045
0.040
0.067
0.070
0.113
0.095
0.055
0.030
0.050
0.025
-------
STORE! RETRIEVAL DATE 75/08/35
1221C1
27 23 00.0 081 12 00.0
ISTOKPOGA CANAL
12 7.5 BASINGER NW
0/LAKE ISTOKPOGA
BROG AT NE EDGE OF LAKE
11EPALES 2111204
4 0000 FEET
DEPTH
DATE
FROM
TO
73/03/18
73/04/13
73/05/17
73/06/14
73/07/13
73/08/17
73/09/14
73/10/12
73/11/16
73/12/14
74/01/17
74/02/14
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
GAY FEET
10
08
08
09
08
08
08
09
09
10
09
08
30
55
45
05
10
25
55
00
15
30
00
30
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
029
042
010K
021
013
024
010K
021
048
072
080
052
MG/L
1.
1.
1.
1.
1.
1.
0.
2.
0.
0.
0.
0.
600
700
700
100
680
900
990
000
875
700
900
800
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
110
052
042
028
060
120
037
210
040
040
075
030
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
P
050
050
035
017
230
036
061
430
040
040
044
020
MG/L P
0.085
0.075
0.075
0.055
0.280
0.052
0.095
0.660
0.082
0.060
0.065
0.045
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/08/25
12Z1BA TF1221BA P000450"
27 30 00.0 081 26 30.0
SE8RING
12117 1-250000 FT PIER
0/LAKE ISTOKPOGA
LAKE ISTOKPOGA
11EPALES 2141204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665 50051 50053
DATE TIME DEPTH N02&N03 TOT KJEL NH3-N PHOS-DIS PHOS-TOT FLOW CONDUIT
FROM OF
TO DAY FEET
73/02/28 11 00
CPU)- "
73/02/28 16 00
73/03/30 11 00
CP(T>-
73/03/30 16 00
73/04/30 11 00
CP(T)-
73/04/30 16 00
73/05/31 11 00
CP-
73/05/31 16 00
73/06/29 11 00
CP < T >-
73/06/29 16 00
73/07/31 11 00
CP < T) -
73/07/31 16 00
73/08/31 11 00
CPU>-
73/08/31 16 00
73/10/02 11 00
CP(T)-
73/10/02 16 00
73/11/02 11 00
CP(T)-
73/11/02 16 00
73/11/28 11 00
CP(T>-
73/11/28 16 00
-74/01/03 11 00
CP(T>-
74/01/03 16 00
74/01/28 08 00
CPU)-
OTAL
IG/L
4.900
2.400
3.300
3.000
0.315
0.540
1.500
5.100
4.800
6.600
0.760
N
MG/L
12.300
27.300
13.200
16.000
26.000
16.800
21.000
8.700
7.600
9.400
12.000
25.000
TOTAL
MG/L
3.100
13.300
3.800
3.900
12.100
7.200
9.000
5.000
1.200
2.400
2.520
13.200
ORTHO
MG/L P
0.082
0.650
0.130
0.155
0.130
0.115
0.049
0.220
0.086
0.250
0.490
MG/L P
0.390
0.940
0.440
0.330
0.660
0.548
0.440
0.078
0.250
0.120
0.450
0.910
RATE FLOW-MGD
INST MGD MONTHLY
0.140 0.138
0.085 0.076
0.082 0.071
0.087 0.091
0.065 0.059
0.053 0.035
0.041 ,0.038
0.031 0.043
-------
STORE! RETRIEVAL DATE 75/08/35
00630 00625 00610 00671
DATE TIME DEPTH N02^N03 TOT KJEL NH3-N PhOS-DIS
FROM OF N-TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/L MG/L P
12218A TF1221BA P000450»
27 30 00.0 081 26 30.0
SE8RING
12117 1-250000 FT PIER
0/LAKE ISTOKPOGA
LAKE ISTOKPOGA
HEPALES 2141204
4 0000 FEET DEPTH
00665
PHOS-TOT
MG/L P
S0051
FLOW
RATE
1NST MGD
S0053
CONDUIT
FLOW-MOD
MONTHLY
74/02/27 11 00
0.680
23.000
8.600
0.150
0.080
0.052
-------
STORET RETRIEVAL DATE 75/08/25
12216B AS1221B8 P002500
27 27 40.0 081 21 10.0
SEBRING
12 7.5 LORIOA
T/LK ISTOKPOGA
ARBUCKLE CREEK
11EPALES 2141204
4 0000 FEET DEPTH
00630 00625
DATE TIME DEPTH IM02t>N03 TOT KJEL
FROM OF N-TOTAL N
TO DAY FEET MG/L MG/L
73/04/30 11 00
CP(T)- 0.440 14.000
73/04/30 16 00
73/05/31 11 00
CP(T)- 0.550 11.500
73/05/31 16 00
73/06/29 11 00
CPU)- 0.165 9.800
73/06/29 16 00
73/07/31 11 00
CP(T>- 0.660 4.000
73/07/31 16 00
73/08/31 11 00
CP(T>- 4.500
73/08/31 16 00
73/10/02 11 00
CP(T>- 0.900 7.800
73/10/02 16 00
73/10/31 11 00
CPU)- 3.780 5.100
73/10/31 16 00
73/11/30 11 00
CP(T>- 1.800 8.500
73/11/30 16 00
74/01/03 11 00
CP(T)- 3.200 9.400
74/01/03 16 00
74/01/28 08 00
CPU)- 4.500 4.500
74/01/28 20 00
74/02/27 11 00
CPU)- 14.300 11.000
74/02/27 16 00
74/04/02 11 00 11.000 6.700
00610 00671 00665 50051 50053
NH3-N PHOS-D1S PHOS-TOT FLOW CONDUIT
TOTAL ORTHO RATE FLO»/-MGO
MG/L MG/L P MG/L P INST MGD MONTHLY
1.400
1.680
0.120
0.920
7.700
9.000
9.000 10.000
0.570 4.800 9.100
0.250 5.200 6.600
0.125
0.123
0.191
0.135
O.lbS 0.135
0.114
0.185
0.250 6.400 7.230 0.238 0.213
7.800 8.100 0.225 0.218
0.140 7.500 8.700 0.218 0.214
8.700 9.100 0.213 0.206
0.510 11.600 14.000 0.190 0.218
1.760 10.000 10.000 0.246 0.181
4.900 8.300 9.900 0.273 0.258
1.500 8.000 9.100 0.248 0.265
------- |