U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
ALLIGATOR LAKE
CQLlfBIA COUWY
FLORIDA
REGION IV
WORKING PAPER No, 243
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.P.O. 699-440
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C-
REPORT
ON
of AHIGATOR LAKE
£ COLUMBIA COUNTY
FLORIDA
REGION IV
WORKING PAPER No, 243
WITH THE COOPERATION OF THE
FLORIDA DEPARTTCNT OF ENVIRONMENTAL REGULATION
AND THE
FLORIDA NATIONAL GUARD
OCTOBER, 1977
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CONTENTS
Page
Fo rev/o rd ii
List of Florida Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 4
III. Lake Water Quality Sunmary 5
IV. Nutrient Loadings 9
V. Literature Reviewed 14
VI. Appendices 15
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11
F 0 R F: W 0 R D
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to fresh water lakes and
reservoirs..
OBJECTIVES
The Survey was designed to develop, in conjunction with 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 eutrophication 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 [§303(e)], water
quality criteria/standards review [§303(c)], clean lakes [§314(a,b)],
and water quality monitoring [§106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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Ill
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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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF FLORIDA
LAKE NAME
Alligator
Apopka
Banana
Crescent
Doctors
Dora
East Tohopekaliga
Effie
Eloise
George
Gibson
Glenada
Griffin
Raines
Hancock
Horseshoe
Howell
Istokpoga
Jessie
Jessup
Kissimmee
Lawne
Lulu
Marion
Minnehaha
Minneola
Monroe
Munson
Okeechobee
Poinsett
Reedy
Semi nole
Semi nole
South
Talquin
Tarpon
Thonotosassa
Tohopekaliga
Trout
Weohyakapka
Yale
COUNTY
Columbia
Lake, Orange
Polk
Flagler, Putnam
Clay
Lake
Osceola
Polk
Polk
Putnam, Volusia
Polk
Highlands
Lake
Polk
Polk
Seminole
Orange, Seminole
Highlands
Polk
Seminole
Osceola
Orange
Polk
Polk
Orange
Lake
Seminole, Volusia
Leon
Glades, Hendry, Martin,
Okeechobee, Palm Beach
Brevard, Orange, Osceola
Polk
Jackson, FL; Decatur,
Seminole, GA
Pinellas
Brevard
Gadsden, Leon
Pinellas
Hillsborough
Osceola
Lake
Polk
Lake
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ALLIGATOR LAKE
Tributary Sampling Site
X Lake Sampling Site
Sewage Treatment Facility
Map Location
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ALLIGATOR LAKE
STORE! NO. 1201
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Alligator Lake is hypereutrophic.
It ranked 36th when the 41 Florida lakes sampled in 1973 were
compared using a combination of six parameters*. Thirty of the
lakes had less median total phosphorus, 33 had less median dis-
solved phosphorus, 27 had less and three had the same median
inorganic nitrogen, 33 had less mean chlorophyll a^, and 28 had
greater mean Secchi disc transparency. Depression of dissolved
oxygen at depths less than two meters occurred at station 1 in
March and November.
Survey limnologists noted dense algal blooms and much emer-
gent vegetation along the shorelines during sampling. Chloro-
phyll a_ values ranging from 19.4 to 231.1 yg/1, high phytoplankton
counts (see page 7), and Secchi disc transparencies of less than
one meter confirm the over-enriched condition of this lake.
B. Rate-Limiting Nutrient:
The algal assay results indicate that Alligator Lake was
limited by nitrogen at the time the assay sample was collected
(03/07/73). The lake data indicate nitrogen limitation at the
other sampling times as well.
* See Appendix A.
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2
C. Nutrient Controllability:
1. Point sources--It is estimated that during the sampling
year, almost 71% of the total phosphorus and 52% of the total
nitrogen inputs to Alligator Lake were contributed by the Lake
City wastewater treatment plant which indirectly discharged to the
lake by way of Unnamed Creek C-l.
The sampling year phosphorus loading of 15.63 g/m2 is nearly
24 times that proposed by Vollenweider (Vollenweider and Dillon,
1974) as a eutrophic loading. However, even complete removal of
the proportionately large point-source phosphorus contribution
would still leave a loading of 4.59 g/m2/yr (seven times the
eutrophic level); and, although the critical level for Florida
lakes may be somewhat higher than that suggested by Vollenweider
(see page 13), it does not seem likely that point-source phos-
phorus control would result in a significant improvement of the
trophic condition of the lake.
The somewhat limited Survey data indicate nitrogen enrichment
may be contributing to the eutrophication of Alligator Lake.
However, a more intensive study of the nitrogen budget of the lake
is needed for an assessment of the effects of point-source nitrogen
control.
2. Non-point sources — It is estimated that non-point sources
contributed 29% of the total phosphorus load and nearly 48% of the
total nitrogen load to Alligator Lake during the sampling year. The
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3
largest contributions were from minor tributaries and immediate
drainage which accounted for just over 22% of the phosphorus
load and 36% of the nitrogen load.
The 1962 Lake City East and Lake City West U.S.G.S. quad-
rangle maps indicate that land use around the lake is predominantly
urban.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Lake Morphometry :
1. Surface area: 1.37 kilometers2.
2. Mean depth: 1.5 meters.
3. Maximum depth: 2.4 meters.
4. Volume: 2.055 x 106 m3.
5. Mean hydraulic retention time: 50 days.
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Unnamed Creek A-l 2.1 0.02
Unnamed Creek B-l 2.1 0.02
Unnamed Creek C-l 4.7 0.12
Minor tributaries &
immediate drainage - 29.6 0.32
Totals 38.5 0.48
2. Outlet -
No surface outlet (seepage). 39.9** 0.48**
C. Precipitation***:
1. Year of sampling: 153.6 centimeters.
2. Mean annual: 129.6 centimeters.
t Table of metric conversions—Appendix B.
tt Surface area calculated from U.S.G.S. maps; 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; since the lake level is relatively constant,
seepage outflow is assumed to equal the sum of inflows.
*** See Working Paper No. 175.
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5
III. LAKE WATER QUALITY SUMMARY
Alligator Lake was sampled three times during 1973 by means of a
pontoon-equipped Huey helicopter. Each time, samples for physical and
chemical parameters were collected from two 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, a single 18.9-liter depth-
integrated sample was composited for algal assays. Also each time,
a depth-integrated sample was collected from each of the stations for
chlorophyll ^analysis. The maximum depth sampled at station 1 was 1.5
meters; only near-surface samples were taken at station 2.
The sampling results are presented in full in Appendix D and
are summarized in the following table.
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PARAMETER
TEMP (C)
DISS OXY (MG/L)
CNOCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
ORTHO P (MG/L)
N02+N03 (MG/L)
AMMONIA (M&/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 3/ 7/73)
2 SITES
KANGE MEAN MEDIAN
19.9 - 2-l»3 20.8 21.3
1.4 - 8.5 5.2 r>.2
110. - ItO. 157. 180.
7.b- 7.9 7.7 7.7
24. - 46. 3b. 43.
0.204 -.1.240 0.888 1.220
0.127 - l.OOu 0.6al 0.91fc>
0.080 - 0.290 0.207 0.250
u.07u - 0.330 0.207 0.
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
03/07/73
08/31/73
11/05/73
2. Chlorophyll a_ -
Sampli ng
Date
03/07/73
08/31/73
11/05/73
Dominant
Genera
1. Flagellates
2. Cryptomonas sp.
3. Crucigenia sp.
4. Scenedesmus sp.
5. Coelastrum sp.
Other genera
Total
1. Chroococcus sp.
2. Cyclotella sp.
3. Oscillatoria sp.
4. Microcystis sp.
5. Anabaena sp.
Other genera
Total
1. Melosira sp.
2. Oscillatoria sp.
3. Anabaena sp.
4. Aphanocapsa sp.
5. Flagellates
Other genera
Total
Station
Number
1
2
1
2
1
2
Algal Units
per ml
7,497
9,623
5,667
3,657
3,291
2,742
16,573
41,553
16,084
11,628
1,163
967
967
4.636
35,445
Chlorophyll
(yg/1)
25.6
19.4
80.4
231.1
49.2
120.7
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8
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum yield
Spike (mg/1) Cone, (mg/1) Cone, (mg/1) (mg/l-dry wt.)
Control 0.600 0.444 14.5
0.050 P 0.650 0.444 14.2
0.050 P + 1.0 N 0.650 1.444 31.3
1.0 N 0.600 1.444 31.8
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum, indicates that the potential primary productivity
of Alligator Lake was very high at the time the sample was
collected (03/07/73). Also, the lack of significant change
in yield with the addition of orthophosphorus until nitrogen
was also added shows that the lake was nitrogen limited when
sampled. Note that the addition of nitrogen alone produced
a yield much greater than the control.
Nitrogen limitation is also indicated by the lake data;
i.e., the mean inorganic nitrogen to orthophosphorus ratios
were less than 1 to 1 at all sampling times.
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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.
In this report, nutrient loads for tributaries A-l and B-l were
determined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Outlet nutrient loads were
estimated using mean nutrient concentrations in the lake and the assumed
seepage outflow.
Nutrient loads from the Lake City wastewater treatment plant exceeded
the loads measured in Unnamed Creek C-l, and the background loads for
this stream and the unsampled "minor tributaries and immediate drainage"
(ZZ of U.S.G.S.) were estimated using the means of the nutrient loads,
in kg/km2/yr, at stations A-l and B-l and multiplying the means by the
C-l and ZZ areas in km2.
The operator of the Lake City wastewater treatment plant provided
monthly effluent samples and corresponding flow data.
* See Working Paper No. 175.
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10
A. Waste Sources:
1. Known municipal -
Name
Lake City*
Woodland Grove
SD**
2. Known industrial - None
Pop.
Served
11,725
Treatment
trickling
filter
Mean Flow
(m3/d)
7,917.8
Receiving
Water
Unnamed Creek C-l
* Treatment plant questionnaire.
** Effluent does not reach Alligator Lake; Haltiwanger, 1975.
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11
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Unnamed Creek A-l 205 1.0
Unnamed Creek B-l 470 2.2
Unnamed Creek C-l 755 3.5
b. Minor tributaries & immediate
drainage (non-point load) - 4,800 22.4
c. Known municipal STP's -
Lake City 15,130 70.6
d. Septic tanks* - 5 <0.1
e. Known industrial - None
f. Direct precipitation** - §0_ 0.3
Total 21,425 100.0
2. Outputs -
Seepage 11,875
3. Net annual P accumulation - 9,550 kg.
* Estimate based on 15 lakeshore dwellings; see Working Paper No. 175.
** Brezonik and Shannon, 1971.
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12
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Unnamed Creek A-l 2,215 2.7
Unnamed Creek B-l 2,005 2.4
Unnamed Creek C-l 4,725 5.7
b. Minor tributaries & immediate
drainage (non-point load) - 29,950 36.0
c. Known municipal STP's -
Lake City 43,385 52.1
d. Septic tanks* - 160 0.2
e. Known industrial - None
f. Direct precipitation** - 795 0.9
Total 83,235 100.0
2. Outputs -
Seepage 43,140
3. Net annual N accumulation - 40,095 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Unnamed Creek A-l 98 1,055
Unnamed Creek B-l 224 955
* Estimate based on 15 lakeshore dwellings; see Working Paper No. 175.
** Brezonik and Shannon, 1971.
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13
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 meso-
trophic 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 15.63 6.97 60.8 29.3
Vollenweider phosphorus loadings
(g/m2/yr) based on estimated mean depth and
hydraulic retention time of Alligator Lake:
"Dangerous" (eutrophic loading) 0.66
"Permissible" (oligotrophic loading) 0.33
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14
V. LITERATURE REVIEWED
Brezonik, Patrick L., and Earl E. Shannon, 1971. Trophic state of
lakes in north central Florida. Publ. No. 13, Water Resources
Res. Ctr., U. of FL, Gainesville.
Haltiwanger, Joe, 1973. Personal communication (Woodland Grove STP
location). Lake City.
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.
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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15
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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LAKE DATA TO BE USED IN RANKINGS
LA^E
CODE LAKE NAME
1201 ALLIGATOR LAKE
1202 LAKE APOPKA
1203 LAKE BANANA
1206 LAKE CRESCENT
1207 DOCTORS LAKE
120>i LAKE DORA
1209 LAKE EFFIE
1210 LAKE GEORGE
1211 LAKE GIdSON
1212 GLENADA LAKE
1214 LAKE GRIFTIN
1215 LAKE HAINES
1217 LAKE HANCOCK
1219 LAKE HORSESHOE
1220 LAKE MOWELL
1221 LAKE ISTOKPOGA
1223 LAKE JESSUP
1224 LAKE KISSIMMEt
1227 LAKE LULU
1228 LAKE MARION
1229 LAKE MINNEHAHA
1230 LAKE MINNEOLA
1231 LAKE MONROE
1232 LAKE OKEECHOdEE
123* LAKC POINSETT
1236 LAKE PFEDY
1238 LAKE SOUTH
MEDIAN
TOTAL P
0.&2C
0.10?
0.660
0.065
0.084
0.10?
1.480
0.129
0.167
0.134
0.119
0.063
0.772
0.034
1.260
0.039
0.49?
0.034
1.490
0.044
0.038
o.oia
0.139
0.063
c.oes
0.033
0.074
MEDIAN
INO^G 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
500-
MEAN StC
474.000
484. 1 76
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
43b.OOO
406.333
474.555
472.366
469.000
468.500
464.000
MEAN
CHLO^A
87.733
4b.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
15-
MIN DO
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
1U.600
10.600
9.000
MEDIAN
DISS OrtTHO P
0.336
0.019
0.293
0.033
0.026
0.022
0.950
0.063
0.069
0.072
0.038
0.014
0.158
0.023
1.175
0.010
0.288
0.007
1.030
0.016
0.012
0.009
0.128
0.010
O.Oal
o.oou
0.028
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LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
12*0 LAKE THONOTOSASSA
12*1 LAKE TOHOPEKALIGA
12*2 TROUT LAKE
12*3 LAKE WEOHYAKAPKA
12*6 LAKE YALE
12<»7 LAKE MUNSON
LAKE SEMINOLE
LAKE LAniNE
1250 LAKE TARPON
1252 LAKE ELOISE
1258 LAKE JESSIE
1261 EAST LAKE TOHOPEKALIGA
1264 PAYNE'S PHAIRIE LAKE (NO
MEDIAN
TOTAL P
0.695
0.2*6
1.110
0.0*7
0.027
l.*75
0.23*
?.560
0.0*1
0.*86
0.051
0.0*2
1.260
MEDIAN
INORG N
0.095
0.200
0.650
0.080
0.160
0.925
0.175
1.350
0.070
0.170
0.090
0.070
0.1*0
500-
MEAN SEC
*66.167
*72.917
*72.000
*56.667
4*1.000
486.667
*73.833
*9*.t>67
400.889
*65.333
*52.667
**0.833
*76.000
MEAN
CHLO«A
37.700
30.633
76.967
7.767
25.367
1*0.317
102.000
84.900
6.867
70.233
26.300
5.167
88.200
15-
HIN 00
10.200
10.500
12.900
8.200
7.600
12.200
6.600
10. <«00
9.000
12.200
10.800
9.*00
7.400
MEDIAN
OISS OWTriO P
0.565
0.152
0.970
0.011
0.014
0.852
0.026
0.117
O.U27
0.339
0.011
0.007
1.210
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PERCENT OF LAKES U*ITH HIGHER VALUES (NUMBER or LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
1201 ALLIGATOR LAKE
1202 LAKE APO°KA
1203 LAKE BANANA
1206 LAKE CRESCENT
1207 DOCTORS LAKE
1208 LAKE DORA
1209 LAKE EFFIE
1213 LAKE GEORGE
1211 LAKE GIBSON
1212 GLENADA LAKE
1214 LAKE GRIFFIN
1215 LAKE HAINES
1217 LAKE HANCOCK
1219 LAKE HORSESHOE
1220 LAKE HOWELL
1221 LAKE ISTOKPOGA
1223 LAKE JESSUP
1224 LAKE KISSIMMEE
1227 LAKE LULU
1228 LAKE MARION
1229 LAKt MINNEHAHA
1230 LAKE MINNEOLA
1231 LAKE MONROE
1232 LAKE OKEECHOdEE
123* LAKE °OIN5ETT
1236 LAKE NEEDY
1238 LAKE SOUTH
1239 LAKE TALOUIN
MEOUN
TOTAL P
25 (
50 <
23 (
65 (
60 <
53 1
5 <
45 1
40 I
43 1
4P 1
70 I
18 I
. 93 I
11 '
85 i
28 '
90
3
78
88
100
38
68
58
95
63
55
10)
20)
9)
26)
?4>
: 21)
: 2)
1 16)
! 16)
: 17)
[ 19)
1 28)
t 7)
1 37)
I 4)
( 34)
( 11)
( 36)
( D
( 3D
( 35)
( 40>
( 15)
( 27)
( 33)
( 35)
( 25)
( 22)
MEDIAN 500-
INORG N MEAN SEC
29 (
38 (
29 (
70 (
76 (
35 (
10 (
54 1
81 1
54 (
29 1
81 1
43 1
70 i
23 i
76 '
1« <
63
3
29
91
98
15
45
60
13
70
20
10)
15)
10)
27)
30)
: 14)
4)
: 21)
: 32)
; 2i)
! 10)
I 32)
1 17)
1 27)
I 9)
( 30)
( 7)
( 25)
( 1)
( 10)
( 36)
( 38)
( 6)
( 18)
( 24)
( 5)
( 27)
( 8)
30 (
10 (
20 (
33 1
toO (
18 1
3 1
48 1
45 1
85 1
23 1
75 I
13 1
00 i
t>9 '
65 '
5
73
15
53
95
98
2«S
40
50
55
69
78
12)
4)
8)
13)
: 24)
: 7)
: i>
[ 19)
I 18)
I 34)
1 9)
! 30)
! 5)
I 32)
I 27)
i 26)
( 2)
( 29)
< 6)
( 21)
( 38)
( 39)
( 11)
( 16)
( 20)
( 22)
< 27)
« V )
MEAN
CHLORA
18
38
5
80
55
33
3
43
70
53
30
58
13
78
35
93
25
t>5
0
bO
S5
100
fj
73
95
*5
68
,w,
( 7)
( 15)
( 2)
( 32)
( 22)
( 13)
( 1>
( 17)
( 28)
( 21)
( 12)
( 23)
( 5)
( 3D
( 14)
( 37)
( 10)
( 26)
( 0)
( 20)
( 34)
( 40)
( 30)
< 29)
( 38)
< IB)
( 27)
f ")
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
T
( 4)
( 29)
( 40)
( 18)
( 12)
< 35)
( 0)
( 9)
( 18)
( D
( 38)
( 12)
< 39)
( 8)
( 23)
( 27)
( 32)
( 26)
( 3)
( 32)
< 3D
( 35)
( 10)
( 21)
( 12)
< 12)
( 23)
t ^
MEDIAN
DISS ORTHO P
18
70
23
50
56
68
10
43
40
38
48
78
28
65
3
89
2S
99
5
73
80
93
33
89
45
95
56
C7
( n
( 28)
( 9)
( 20)
( 22)
( 27)
( 4)
( 17)
( 16)
( 15)
( 19)
( 3D
< ID
( 26)
( D
( 35)
( 10)
( 39)
( 2)
( 29)
< 32)
( 37)
< 13)
( 35)
( 18)
( 38)
( 22)
f 7*1
INiJEX
NO
1JO
2eU
200
346
341
297
31
256
324
276
273
396
213
406
201
477
1B4
4,5
34
366
517
579
215
368
3*2
33/
3d 6
7CV
-------
PERCENT or LAKES «IITH HIGHER VALUES INUMBE* OK LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
LAKE THONOTOSASSA
LAKE TOHOPEKALIGA
TROUT LAKE
1243 LAKE WEOHYAKAPKA
1246 LAKE YALE
1247 LAKE MUNSON
1248 LAKE SEMINOLE
1249 LAKE LAWNE
1250 LAKE TARPON
1252 LAKE ELOISE
1258 LAKE JESSIE
1261 EAST LAKE TOHOPEKALIGA
126<* PAYNE'S PRAIRIE LAKE (NO
MEDIAN
TOTAL P
20 (
33 (
15 (
75 (
9P (
8 (
35 (
0 <
83 (
30 (
73 (
80 (
11 <
8)
13)
6)
30)
39)
3)
14)
0)
33)
12)
29)
32)
4)
MEDIAN
!NOr?G N
85
40
8
91
58
5
48
0
98
50
68
98
65
( 34)
( 16)
( 3)
( 36)
( 23)
( 2)
( 19)
( 0)
( 38)
( 20)
( 35)
( 38)
< 26)
500-
MEAN SEC
58
38
43
83
90
8
35
0
100
63
88
93
25
( 23)
< 15)
< 17)
( 33)
( 36)
( 3)
( 14)
( 0)
( 40)
( 25)
< 35)
( 37)
( 10)
MEAN
CI-ILO*A
40
48
23
88
63
8
10
20
90
28
60
98
15
( 16)
( 19)
( 9)
( 35)
( 25)
< 3)
( 4)
( 8)
( 36)
( 11)
( 24)
( 39)
( 6)
15-
MIN DO
48
40
13
74
83
16
69
43
60
16
26
55
90
( 18)
( 16)
( 5)
( 29)
( 32)
( 6)
( 27)
( 17)
( 23)
( 6)
( 10)
< 22)
( 35)
MEDIAN
OISS OWTHO 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)
INDEX
NO
26b
229
110
495
467
58
260
V8
491
207
419
523
206
-------
LA8 ''4' f SKP
INDEX NO
579
523
517
495
491
477
467
455
419
406
396
386
368
366
346
342
341
337
3?4
297
294
280
276
273
?66
260
256
-------
LAKES RANKED BV INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
29 1231 LAKE MONROE 215
30 1217 LAKE HANCOCK 2)3
31 1252 LAKE ELOISE 207
32 1264 PAYNE'S PRAIRIE LAKE (NO 206
33 1220 LAKE riOWELL 201
3* 1203 LAKE BANANA 200
35 1223 LAKE JESSUP 184
36 1201 ALLIGATOR LAKE 130
37 1242 TROUT LAKE 110
38 1249 LAKE LAWNE 98
39 1247 LAKE MUNSON 58
40 1227 LAKE LULU 34
41 1209 LAKE EFFIE 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"4 = 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 FLORIDA
8/35/75
LAKE CODE 1201
ALLIGATOR LAKE
TOTAL DRAINAGE AREA OF LAKE(SO KM)
FEB
39.9
SUB-DRAINAGE
TRIBUTARY AREA(SO KM)
JAN
MAR
APR
MAY
NORMALIZED FLOWS(CMS)
JUN JUL AUG
SEP
OCT
NOV
DEC
MEAN
1201A1
1201B1
1201C1
1201ZZ
2.1
2.1
4.7
29.8
0.02 0.04
0.02 0.04
0.10 0.15
0.25 0.50
0.04
0.04
0.15
0.55
0.01
0.02
0.10
0.22
0.01
0.01
0.10
0.20
0.01
0.01
0.09
0.13
0.02
0.02
0.10
0.26
0.04
0.04
0.15
0.55
0.04
0.04
0.16
0.54
0.03
0.03
0.12
0.37
0.01
0.01
0.07
0.09
0.01
0.01
0.09
0.22
0.02
0.02
0.12
0.32
SUMMARY
OTAL DRAINAGE
AREA OF
LAKE =
UM OF SUB-DRAINAGE AREAS a
39.9
38.7
TOTAL FLOW
TOTAL FLOW
IN =
OUT =
5.83
0.0
NOTE «*« LAKE IS A CLOSED SINK AND HAS NO OUTLET
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
1201A1
1201B1
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
0.06
0.07
0.01
0.02
0.01
0.04
0.02
0.01
0.00
0.02
0.01
0.01
0.06
0.08
0.01
0.02
0.01
0.04
0.02
0.01
0.00
0.02
0.01
0.00
17
14
19
14
14
12
15
3
17
13
18
15
17
14
19
14
14
12
15
3
17
13
18
15
FLOW DAY
0.03
0.02
0.01
0.00
0.01
0.02
0.04
0.01
0.00
0.01
0.01
0.01
0.03
0.02
0.01
0.00
0.01
0.02
0.04
0.01
0.00
0.01
0.01
0.01
FLOW DAY
FLOW
-------
TRIBUTARY FLOW INFORMATION FOR FLORIDA
8/25/75
LAKE CODE 1201
ALLIGATOR LAKE
MEAN MONTHLY FLOWS AND OAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
1201C1
1201Z2
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
0.19
0.23
0.09
0.12
0.09
0.16
0.12
0.08
0.06
0.09
0.08
0.10
0.79
1.05
0.12
0.34
0.17
0.59
0.31
0.11
0.03
0.25
0.11
0.16
17
14
19
14
14
12
15
3
17
13
18
15
17
14
19
14
14
12
IS
3
17
13
18
15
FLOW DAY
0.12
0.11
0.08
0.08
0.08
0.10
0.15
0.09
0.06
0.07
0.07
0.08
0.37
0.27
0.08
0.04
0.12
0.28
0.48
0.14
0.02
0.14
0.08
0.10
FLOW DAY
FLOW
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 75/08/25
DATE
FROM
TO
73/03/07
73/08/31
73/11/05
TIME DEPTH
OF
DAY FEET
11 20 0000
11 20 0004
14 50 0000
14 50 0005
11 24 0000
11 24 0001
11 24 0005
00010
WATER
TEMP
CENT
21.3
19.9
29.4
29.2
19.8
19.8
19.3
120101
HEP ALES
00300
DO
MG/L
1.9
8.5
5.4
3.2
00077
TRANSP
SECCHI
INCHES
30
24
36
00094
CNDUCTVY
FIELD
MICROMHO
180
180
178
178
178
178
178
3
00400
PH
SU
7.70
7.50
8.80
8.10
8.20
7.40
2111202
0008 FEET DEPTH
00410
T ALK
CAC03
MG/L
43
46
54
54
68
71
00610
NH3-N
TOTAL
MG/L
0.220
0.330
0.110
0.100
0.090
0.350
00625
TOT KJEL
N
MG/L
2.300
1.800
2.700
1.600
2.800
2.100
00630
N02&N03
N-TOTAL
MG/L
0.290
0.250
0.130
0.120
0.110
0.060
00671
PHOS-DIS
ORTHO
MG/L P
0.916
1.000
0.386
0.287
0.830
0.990
DATE
FROM
TO
73/03/07
73/08/31
73/11/05
TIME DEPTH
OF
DAY FEET
11 20 0000
11 20 0004
14 50 0000
14 50 0005
11 24 0000
11 24 0005
00665
PHOS-TOT
MG/L P
1.220
1.240
0.620
0.435
1.020
1.130
32217
CHLRPHYL
A
UG/L
25.6
80.4
49.2
-------
STORET RETRIEVAL DATE 75/08/25
120102
30 09 27.0 082 38 12.0
ALLIGATOR LAKE
12023 FLORIDA
DATE TIME DEPTH
FROM OF
TO DAY FEET
73/03/07 12 20 0000
73/08/31 14 40 0000
73/11/05 11 35 0000
00010
WATER
TEMP
CENT
21.3
29.6
22.4
00300
DO
MG/L
8.5
11.4
12.0
00077 00094
TRANSP CNOUCTVY
SECCHI FIELD
INCHES MICROMHO
36
22
8
110
172
11EPALES
3
00400
PH
SU
7.90
10.10
9.60
00410
T ALK
CAC03
MG/L
24
49
54
2111202
0003 FEET DEPTH
00610
NM3-N
TOTAL
MG/L
0.070
0.120
0.120
00625
TOT KJEL
N
MG/L
1.600
3.600
4.400
00630
N02&N03
N-TOTAL
MG/L
0.080
0.180
0.140
00671
PHOS-DIS
ORTHO
MG/L P
0.127
0.137
0.311
00665 32217
DATE TIME DEPTH PHOS-TOT CHLRPHYL
FROM OF A
TO DAY FEET MG/L P UG/L
73/03/07 12 20 0000 0.204 19.4
73/08/31 14 40 0000 0.330 231.1
73/11/05 11 35 0000 0.574 120.7
-------
APPENDIX E
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 75/08/35
1201A1
30 11 00.0 082 36 30.0
UNNAMED TRIB
12011 7.5 LAKE CITY E
I/ALLIGATOR LAKE
RT 33 CULVERT
11EPALES 2111204
4 0000 FEET
DATE
FROM
TO
73/03/17
73/04/14
73/05/19
73/06/14
73/07/14
73/08/12
73/09/15
73/10/03
73/11/17
73/12/13
74/01/18
74/02/15
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
14
09
09
09
09
10
09
09
12
12
12
12
08
00
00
00
00
00
00
00
30
30
00
00
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
.016
.058
.046
.010K
.017
.036
.030
.105
.040
.156
.040
.032
MG/L
1.
6.
4.
0.
2.
4.
2.
5.
1.
1.
2.
1.
050
200
900
820
900
600
900
400
950
800
100
200
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.
090
252
700
028
035
440
460
450
056
460
036
125
MG/L P
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
072
170
044
063
028
065
087
120
064
110
068
080
MG/L P
0.315
0.290
0.315
0.220
0.230
0.150
0.280
0.330
0.260
0.300
0.507
0.210
DEPTH
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/08/25
DATE TIME DEPTH
FROM OF
TO DAY FEET
73/03/17
73/04/14
73/05/19
73/06/14
73/07/14
73/08/12
73/09/15
73/10/03
73/11/17
73/12/13
74/01/18
74/02/15
14 30
09 15
09 15
09 15
09 15
09 45
09 15
09 15
12 45
12 12
12 15
13 45
1201B1
30 10 30.0 082 37 00.0
UNNAMED TRIB
12 7.5 LAKE CITY E
I/ALLIGATOR LAKE
DAM AT SE EDGE OF LAKE CITY
11EPALES 2111204
4 0000 FEET
DEPTH
10630
!&N03
•QTAL
IG/L
0.930
0.760
0.450
0.020
0.510
0.590
0.890
0.640
0.740
1.010
0.860
0.528
00625
TOT KJEL
N
MG/L
0.480
0.960
5.200
1.800
3.500
2.520
1.980
3.900
1.850
0.900
0.900
0.600
00610
NH3-N
TOTAL
MG/L
0.084
0.035
0.132
0.180
0.098
0.240
0.220
0.200
0.048
0.072
0.032
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.300
0.176
0.154
0.150
0.028
0.210
0.370
0.240
0.262
0.264
0.300
0.240
00665
PHOS-TOT
MG/L P
0.370
0.290
0.220
0.510
2.200
0.370
1.050
0.915
0.400
0.390
0.600
0.300
-------
STORE! RETRIEVAL DATE 75/08/25
1201C1
30 10 00.0 082 38 30.0
UNNAMED TRIB
12 7.5 LAKE CITY W
T/ALLI6ATOR LAKE
SOUTH FIRST ST BRDG .75 HI S OF LAKE CIT
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
73/03/17
73/04/14
73/05/19
73/06/14
73/07/14
73/08/12
73/09/15
73/10/03
73/11/17
73/12/13
74/01/18
74/02/15
TIME DEPTH
OF
DAY FEET
14 45
09 30
09 30
09 30
09 30
09 30
09 30
09 30
13 00
12 00
12 30
13 30
00630
N02&N03
N-TOTAL
MG/L
1.880
2.700
1.820
4.300
1.460
2.900
2.600
11.800
11.800
12.000
7.000
8.300
00625
TOT KJEL
N
MG/L
10.500
4.300
18.900
5.100
7.200
3.700
9.600
3.500
8.600
7.250
9.500
6.700
00610
NH3-N
TOTAL
MG/L
7.100
1.790
8.900
2.000
0.098
0.750
1.800
1.060
2.300
2.400
3.600
1.880
00671
PHOS-DIS
ORTHO
MG/L P
4.000
1.680
4.900
0.650
1.600
1.300
2.700
4.200
4.620
4.400
3.800
3.670
00665
PHOS-TOT
MG/L P
5.100
2.200
3.150
2.100
1.720
2.900
5.200
6.100
5.100
5.400
4.800
-------
STORET RETRIEVAL DATE 75/08/25
1201CA TF1201CA P011725
30 10 30.0 082 38 30.0
LAKE CITY
12011 7.5 LK CITY W
D/ALLIGATOR LAKE
ALLIGATOR LAKE
11EPALES 2141204
4 0000 FEET DEPTH
00630 00625
DATE TIME DEPTH N02«.N03 TOT KJEL
FROM OF N-TOTAL N
TO DAY FEET MG/L MG/L
73/02/14 07 30
CP(T)-
73/02/14 16 30
73/03/14 07 30
CP(T)-
73/03/14 16 00
73/04/18 08 00
CP-
73/04/18 16 00
73/05/23 07 30
CPU>-
73/05/23 16 00
73/06/13 07 00
CPU)-
73/06/13 16 00
73/07/11 07 30
cpm-
73/07/11 16 00
73/08/15 07 30
CP(T>-
73/08/15 16 00
73/09/20 09 00
CP < T)-
73/09/20 14 00
73/10/24 07 30
CP(T>-
73/10/24 16 30
73/11/28 07 30
CP(T)-
73/11/28 16 00
73/12/12 07 30
CP(T>-
73/12/12 16 00
74/02/04 08 00
CP < T >-
74/02/04 14 00
7.000
0.450
2.600
4.400
5.700
5.800
5.700
8.400
12.800
11.600
13.000
10.500
7.400
10.000
10.000
9.100
5.200
5.000
6.500
5.100
9.950
6.700
00610 00671 0066S 50051 50053
NH3-N PHOS-DIS PHOS-TOT FLOW CONDUIT
TOTAL 08THO RATE FLOW-MOD
MG/L MG/L P MG/L P INST MGD MONTHLY
2.400 3.100 4.300 2.000
0.640 2.600 3.000 2.000 2.000
0.850 4.100 5.400 2.300
0.530 4.500 5.700 2.300 2.300
2.300 3.900 4.800 2.000 2.000
1.130 3.800 4.300 2.500 2.250
0.890 3.100
0.510
1.100
2.000 2.000
3.570 4.BOO 2.500 2.000
0.890 5.200 6.600 2.250
1.320 4.900 5.300 2.000
2.250
5.400 6.500 2.000 2.000
2.000
2.500 2.500
-------
STORED JHETRIEVAL DATE 75/08/25
00630
DATE TIME DEPTH N02&.N03
FRO* OF N-TOTAL
TO DAY FEET MG/L
74/02/26 08 00
CPU)-
74/02/28 16 00
9.800
8.500
1201CA TF1201CA P011725
30 10 30.0 082 38 30.0
LAKE CITY
12011 7.5 LK CITY W
D/ALLIGATOR LAKE
ALLIGATOR LAKE
11EPALES 2141204
4 0000 FEET DEPTH
00625
TOT KJEL
N
MG/L
00610
NH3-N
TOTAL
v MG/L
00671
PHOS-OIS
ORTHO
MG/L P
00665
PHOS-TOT
MG/L P
50051
FLOW
RATE
INST MGD
S0053
CONDUIT
FLOW-MOD
MONTHLY
2.700
5.300
6.700
2.000
2.000
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