U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAKE MINNEOLA
LAKECOMY
FLORIDA
EPA REGION IV
WORKING PAPER No, 266
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.P.O. 699-440
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_ REPORT
CK ON
? LAKE MINNEOLA
LAKE COUNTY
FLORIDA
EPA REGION IV
o^ WORKING PAPER No, 266
"8
o
0
WITH THE COOPERATION OF THE
FLORIDA DEPARTMENT OF ENVIRONMENTAL REGULATION
AND THE
/
FLORIDA NATIONAL GUARD
DECEMBER, 1977
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1
CONTENTS
Page
Foreword ii
List of Florida Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
IIT. Lake Water Quality Summary 4
IV. Nutrient Loadings 8
V. Literature Reviewed 12
VI. Appendices 13
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ii
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to freshwater 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)], v/ater
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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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 cf 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
LAKE NAME
Alligator
Apopka
Banana
Crescent
Doctors
Dora
East Tohopekaliga
Effie
Eloise
George
Gibson
Glenada
Griffin
Haines
Hancock
Horseshoe
Howel1
Istokpoga
Jessie
Jessup
Kissimmee
Lawne
Lulu
Marion
Minnehaha
Mfnneola
Monroe
Munson
Okeechobee
Poinsett
Reedy
Semi no!e
Semi nole
South
Talquin
Tarpon
Thonotosassa
Tohopekaliga
Trout
Weohyakapka
Yale
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF FLORIDA
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, Hendry, Martin,
Okeechobee, Palm Beach
Brevard, Orange, Osceola
Polk
Jackson, FL; Decatur,
Seminol e, GA
Pine!las
Brevard
Gadsden, Leon
Pinellas
Hillsborough
Osceola
Lake
Polk
Lake
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LAKE MINNEOLA
Tributary Sampling Site
X Lake Sampling Site
1/2 i "/a Km.
Mi.
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LAKE MINNEOLA
STORE! NO. 1230
CONCLUSIONS
A. Trophic Condition:
Survey data indicate Lake Minneola is oligo-mesotrophic. It
ranked first in overall trophic quality when the 41 Florida lakes
sampled in 1973 were compared using a combination of six parameters*.
All of the other lakes had greater median total phosphorus and mean
chlorophyll a^ 37 had greater median dissolved phosphorus, 38 had
greater and two had the same median inorganic nitrogen, and only
one of the lakes had a greater mean Seechi disc transparency.
Survey limnologists reported rooted aquatic vegetation along
the shorelines.
B. Rate-Limiting Nutrient:
The algal assay results are not considered representative of
conditions in the lake at sampling time (03/15/73) due to a signifi-
cant loss of inorganic nitrogen during shipment from the field to
the laboratory. The lake data indicate phosphorus limitation at
two of the three sampling stations in March but nitrogen limitation
at all stations in September and November.
C. Nutrient Controllability:
1. Point sources—No known municipal or industrial wastewater
treatment plants impacted Lake Minneola during the sampling year.
See Appendix A.
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2
Septic tanks serving shoreline dwellings were estimated
to have contributed 1.0% of the total phosphorus load to the
lake, but a shoreline survey would be needed to determine the
actual significance of these sources.
The present phosphorus loading of 0.27 g/m2/yr is only half
that proposed by Vollenweider (Vollenweider and Dillon, 1974) as
a eutrophic loading (see page 11). If the loading rate is not
increased significantly, the existing trophic condition of Lake
Minneola should persist.
2. Non-point sources--It is calculated that the outlet of
Lake Hiawatha contributed about 81.9% of the total phosphorus
input to Lake Minneola. The controllability of this phosphorus
load is not known, but the very low phosphorus export rate of the
outlet stream B-l (see page 10) indicates point-source contri-
butions to Lake Hiawatha probably are minimal.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
4.4.
A. Morphometry :
1. Surface area: 7.64 kilometers2.
2. Mean depth: 2.7 meters.
3. Maximum depth: 4.3 meters.
4. Volume: 20.628 x 106 m3.
5. Mean hydraulic retention time: 128 days (based on outflow).
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2*) (m3/secj*
Unnamed Stream B-l 398.9 1.86
Minor tributaries &
immediate drainage - 2.7 0.03
Totals 401.6 1.89
2. Outlet -
Palatlakaha River 409.2** 1.86
C. Precipitation***:
1. Year of sampling: 123.5 centimeters.
2. Mean annual: 130.5 centimeters.
t Table of metric conversions—Appendix B.
tt Wegner, 1967.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of lake.
*** See Working Paper No. 175.
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4
III. WATER QUALITY SUMMARY
Lake Minneola 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 three 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 a^ analysis.
The maximum depths sampled were 3.4 meters at station 1, 1.5 meters at
station 2, and 1.5 meters at station 3.
The sampling results are presented in full in Appendix D and are
summarized in the following table.
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PARAMETER
TEMP (C)
OISS OXY (MG/L)
CNDCTVY (MCROMOJ
PH (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)
INOKG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 3/15/73)
3 SITES
RANGE
24.7 - 25.8
8.1 - 8.7
75. - 90.
7.2 - 7.9
10. - 10.
0.013 - 0.017
0.003 - 0.012
0.020 - 0.040
0.040 - 0.100
0.400 - 0.700
0.060 - 0.140
0.420 - 0.740
0.9 - 1.7
8.2
85.
7.6
10.
MEA.M MEDIAN
25.2 25.3
8.3
82.
7.6
10.
0.014 0.014
0.006 0.005
0.026 0.02U
0.05u O.U4U
0.457 0.400
0.076 0.060
0.483 0.420
2.7 -
4.6
1.2
3.4
1.0
2.7
CHEMICAL CHARACTERISTICS FOR LAKE MINNEOLA
STORET COOE 1230
2ND SAMPLING ( 9/ 6/73)
3 SITES
RANGE
29.3 - 29.8
7.6 - 7.8
86. - 87.
6.7 - 8.3
10. - 10.
0.016 - 0.034
0.008 - 0.028
0.030 - 0.040
0.030 - 0.070
0.800 - 1.300
0.060 - 0.110
0.830 - 1.340
5.1 - 7.3
1.8 - 1.9
MEAN
29.6
7.7
87.
7.3
10.
0.022
0.015
0.032
0.047
0.975
0.080
1.007
6.0
1.9
MEDIAN
29.6
7.7
87.
7.1
10.
0.019
0.011
0.030
0.045
0.900
0.075
0.930
5.5
1.9
3RD SAMPLING (ll/ 7/73)
3 SITES
RANGE MEAN MEDIAN
22.4 - 22.8 22.6 22.7
8.0 - 8.2 8.0 8.0
85. - 90. 87. 86.
6.4 - 6.7 6.6 6.6
10. - 10. 10. 10.
0.015 - 0.029 0.024 0.027
0.005 - 0.018 0.011 0.011
0.020 - 0.030 0.029 0.030
0.040 - 0.050 0.041 0.040
0.500 - 0.600 0.543 0.500
0.060 - 0.080 0.070 0.070
0.520 - 0.630 0.571 0.530
2.7 - 3.0 2.8 2.8
1.5 - 2.1 1.9 2.1
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
03/15/73
09/06/73
11/07/73
2. Chlorophyll a^ -
Sampli ng
Date
03/15/73
09/06/73
11/07/73
Dominant
Genera
1.
2.
3.
4.
5.
Flagellates
Lyngbya S£.
Melosira sp.
Cryptomonas sp.
Aphanocapsa sp.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Total
Lyngbya sp_.
Chroococcus sp.
Flagellates sp_.
Cosmariurn sp.
Cryptomonas sp.
Other genera
Total
Lyngbya sp.
Chroococcus sp.
Aphanocapsa sp.
Synedra sp.
Chlamydomonas sp.
Other genera
Total
Station
Number
1
2
3
1
2
3
1
2
3
Algal units
per ml
174
35
35
35
35
314
5,752
757
6,382
Chlorophyll
(yg/i)
1.7
1.0
0.9
7.3
5.1
5.5
3.0
2.8
2.7
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7
C. Limiting Nutrient Study:
There was a loss of about 60% of the inorganic nitrogen in
the assay sample during shipment from the field to the laboratory,
and the assay results are not considered representative of con-
ditions in the lake at the time the sample was taken (03/15/73).
The lake data indicate that primary productivity was limited
by phosphorus at two of the three sampling stations in March but
was nitrogen limited at all stations in September and November.
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 03/15/73 09/06/73 11/07/73
1 10/1
2 14/1
3 17/1
N)
P)
P)
4/1 (N)
5/1 (N)
10/1 (N)
5/1 (N)
8/1 (N)
11/1 (N)
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8
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 sampled tributaries were deter-
mined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. 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.
No known point sources impacted Lake Minneola during the sampling
year.
* See Working Paper No. 175.
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9
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Unnamed Stream B-l 1,680 81.9
b. Minor tributaries & immediate
drainage (non-point load) - 10 0.5
c. Known municipal STP's - None
d. Septic tanks* - 25 1.0
e. Known industrial - None
f. Direct precipitation** - 335 16.6
Totals 2,050 100.0
2. Outputs -
Lake outlet - Palatlakaha River 1,540
3. Net annual P accumulation - 510 kg.
* Estimate based on 85 lakeshore dwellings; see Working Paper No. 175.
** Brezonik and Shannon, 1971.
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10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Unnamed Stream B-l 46,695 89.2
b. Minor tributaries & immediate
drainage (non-point load) - 315 0.6
c. Known municipal STP's - None
d. Septic tanks* - 905 1.7
e. Known industrial - None
f. Direct precipitation** - 4,430 8.5
Total 52,345 100.0
2. Outputs -
Lake outlet - Palatlakaha River 125,420
3. Net annual N loss - 73,075 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Unnamed Stream B-l 4 117
* Estimate based on 85 lakeshore dwellings; see Working Paper No. 175.
** Brezonik and Shannon, 1971.
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11
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
grams/m2/yr
Total Accumulated
0.27 0.07
Total Accumulated
6.9 loss*
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Lake Minneola:
"Dangerous" (eutrophic loading) 0.54
"Permissible" (oligotrophic loading) 0.27
* There was an apparent loss of nitrogen during the sampling year. This
may have been due to nitrogen fixation in the lake, solubilization of
previously sedimented nitrogen, recharge with nitrogen-rich ground water,
unknown and unsampled point sources discharging directly to the lake, or
underestimation of the minor tributary and immediate drainage load.
Whatever the cause, a similar nitrogen loss has occurred at Shagawa Lake,
Minnesota, which has been intensively studied by EPA's former National
Eutrophication and Lake Restoration Branch (Malueg et al., 1975).
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12
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.
Malueg, Kenneth W., D. Phillips Larsen, Donald W. Schults, and
Howard T. Mercier, 1975. A six-year water, phosphorus, and
nitrogen budget for Shagawa Lake, Minnesota. Jour. Env. Qual.,
vol. 4, no. 2, pp. 236-242.
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.
Wegner, William, 1967. Clermont chain of lakes. Progress report
for the Central Florida Region Fish Management Area submitted
to the FL Game & Fresh Water Fish Comm., Tallahassee.
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VI. APPENDICES
13
APPENDIX A
LAKE RANKINGS
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LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
1301 ALLIGATOR LAKE
1202 LAKE APOPKA
1303 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
1215 LAKE HAINES
1217 LAKE HANCOCK
1219 LAKE HORSESHOE
1220 LAKE HOWELL
1221 LAKE ISTOKPOGA
1223 LAKE JESSUP
122* LAKE KISSIMMEE
1227 LAKE LULU
1228 LAKE MARION
1229 LAKE MINNEHAHA
1230 LAKE MINNEOLA
1231 LAKE MONROE
1232 LAKE OKEECHOBEE
123* 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
4S3.000
468.833
435.000
406.333
474.555
472.366
469.000
468.500
464.000
462.167
MEAN
CHLORA
87.733
46.61*
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
0.028
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
0.051
0.008
0.028
0.031
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LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
1340 LAKE THONOTOSASSA
1241 LAKE TOHOPEKALIGA
1243 TROUT LAKE
1343 LAKE WEOHTAKAPKA
1216 LAKE YALE
1247 LAKE MUNSON
1248 LAKE SEMINOLE
1249 LAKE LAWNE
1250 LAKE TARPON
1252 LAKE ELOISE
1258 LAKE JESSIE
1261 EAST LAKE TOHOPEKALIGA
1264 PAVNE«.S PRAIRIE LAKE (NO
MEDIAN
TOTAL P
0.695
0.246
1.110
0.047
0.027
1.475
0.234
2.560
0.041
0.486
0.051
0.042
1.260
MEDIAN
INOR6 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
0.140
500-
MEAN SEC
466.167
472.917
472.000
458.667
441.000
486.667
473.833
494.667
400.889
465.333
452.667
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
5.167
88.200
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
MEDIA
DISS ORTC
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
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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 GLENAOA LAKE
1214 LAKE GRIFFIN
1215 LAKE HAINES
1217 LAKE HANCOCK
1219 LAKE HORSESHOE
1220 LAKE HOWELL
1221 LAKE ISTOKPOGA
1223 LAKE JESSUP
1224 LAKE KISSIMHEE
1227 LAKE LULU
1228 LAKE MARION
1229 LAKE MINNEHAHA
1230 LAKE HINNEOLA
1231 LAKE MONROE
1232 LAKE OKEECH08EE
123* LAKE POINSETT
1236 LAKE REEDY
1238 LAKE SOUTH
1239 LAKE TALOUIN
MEDIAN
TOTAL P
25
50
23
65
60
53
5
45
40
43
48
70
18
93
11
85
28
90
3
78
88
100
36
68
58
95
63
55
< 10)
( 20)
( 9)
( 26)
( 24)
( 21)
( 2)
( 18)
< 16)
< 17)
( 19)
I 28)
( 7)
« 37)
I 4)
C 34)
( 11)
( 36)
( 1)
( 3D
( 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 (
16 (
63 (
3 (
29 (
91 (
98 (
15 (
45 (
60 (
13 (
70 <
20 (
10)
IS)
10)
27)
301
14)
4)
21)
32)
21)
10)
32)
17)
27)
•9)
30)
7)
25)
1)
10)
36)
38)
6)
18)
24)
5)
27)
8)
500-
MEAN SEC
30 (
10 (
20 (
33 <
60 (
18 (
3 (
48 (
45 (
85 <
23 <
75 <
13 (
80 (
69 (
65 (
5 (
73 <
15 (
53 (
95 i
98 (
28 (
40 (
SO C
55 (
69 (
78 (
12)
4)
8)
13)
24)
7)
1)
19)
18)
34)
9)
30)
5)
32)
27)
26)
2)
29)
6)
21)
38)
39)
11)
16)
20)
22)
27)
31)
MEAN
CHLORA
18 ( 7)
38 ( 15)
5 ( 2)
80 ( 32)
55 ( 22)
33 ( 13)
3 1 1)
43 ( 17)
70 ( 28)
S3 < 21)
30 I 12)
58 < 23)
13 ( 5)
78 ( 3D
35 ( 14)
93 < 37)
25 ( 10)
65 < 26)
0 1 0)
50 < 20)
85 ( 34)
100 < 40)
75 ( 30)
73 < 29)
95 ( 38)
45 ( 18)
68 ( 27)
83 I 33)
15-
MIN 00
10 (
74 (
100 (
48 <
34 (
90 (
0 (
23 I
48 (
3 (
95 <
34 (
98 (
20 (
60 1
69 <
83 (
65 (
8 I
83 (
78 <
90 (
26 (
S3 (
34 (
34 <
60 I
5 (
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
DISS 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)
INDEX
NO
130
280
200
346
341
297
31
256
324
276
273
396
213
406
201
477
184
455
34
366
517
579
215
368
342
337
336
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 MUNSON
1248 LAKE SEHINOLE
1249 LAKE LAWNE
1250 LAKE TARPON
1252 LAKE ELOISE
1258 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
1 8)
< 13)
( 6)
( 30)
( 39)
( 3)
( 14)
( 0)
( 33)
( 12)
( 29)
( 32)
< 4)
MEDIAN
INORG N
85 I
40 (
8 (
91 (
58 (
5 <
48 I
0 (
98 (
50 (
88 (
98 (
65 (
34)
16)
3)
36)
23)
2)
19)
0)
38)
20)
35)
38)
26)
500-
MEAN SEC
58 1
38 1
43 I
83 <
90 '
8 '
35 i
0
100
63
88
93
25
! 23)
1 IS)
1 17)
1 33)
1 36)
( 3)
1 14)
I 0)
( 40)
( 25)
( 35)
( 37)
I 10)
MEAN
CHLORA
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)
1 6)
15-
MIN 00
48
40
13
74
83
16
69
43
60
16
26
55
90
I 18)
( 16)
( 5)
( 29)
( 32)
( 6)
( 27)
( 17)
( 23)
( 6)
( 10)
( 22)
( 35)
MEDIAN
OISS ORTHO P
15
30
a
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
266
229
110
495
467
58
260
S(8
491
207
419
523
206
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 1330 LAKE HINNEOLA . 579
2 1361 EAST LAKE TOHOPEKALI6A 523
3 1239 LAKE MINNEHAHA 517
4 1343 LAKE WEOHYAKAPKA 495
5 1350 LAKE TARPON 491
6 1321 LAKE ISTOKPOGA 477
7 1246 LAKE YALE 467
8 1234 LAKE KISSIMMEE 455
9 1258 LAKE JESSIE 419
10 1319 LAKE HORSESHOE 406
11 1215 LAKE HAINES 396
13 1338 LAKE SOUTH 366
13 1232 LAKE OKEECHOBEE 368
14 1228 LAKE MARION 366
15 1206 LAKE CRESCENT 346
16 1334 LAKE POINSETT 342
17 1207 DOCTORS LAKE 341
18 1236 LAKE REEDY 337
19 1211 LAKE GIBSON 324
20 1208 LAKE DORA 297
21 1339 LAKE TALQUIN 294
22 1202 LAKE APOPKA 260
23 1212 GLENAOA LAKE 276
24 1214 LAKE GRIFFIN 273
25 1240 LAKE THONOTOSASSA 266
26 1248 LAKE SEMINOLE 260
27 1210 LAKE GEORGE 256
28 1341 LAKE TOHOPEKALIGA 229
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
29 1231 LAKE MONROE 215
30 1217 LAKE HANCOCK 213
31 1252 LAKE ELOISE 207
32 1264 PAYNE'S PRAIRIE LAKE (NO 206
33 1220 LAKE HOMELL 201
34 1203 LAKE BANANA 200
35 1223 LAKE JESSUP 184
36 1201 ALLIGATOR LAKE 130
37 1242 TROUT LAKE 110
38 124-7 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 = 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
a/25/75
LAKE CODE 1230
LAKE MINNEOLA
TOTAL DRAINAGE AREA OF LAKE (SO KM)
TRIBUTARY
1230A1
1230B1
1230ZZ
SUB-DRAINAGE
AREA(SQ KM) JAN
409.2
398.9
2.6
1.24
1.21
0.31
FEB
1.52
1.55
0.00
409.
MAR
2.80
2.94
0.01
2
APR
2.62
2.56
0.00
MAY
1.78
1.60
0.00
NORMALIZED FLOWS (CMS)
JUN JUL AUG
1.07
1.01
0.00
1.09
1.12
0.00
2.04
2.06
0.01
SEP
2.44
2.62
0.01
OCT
2.76
2.86
0.01
NOV
1.80
1.67
0.00
DEC
1.13
1.05
0.00
MEAN
1.86
1.86
0.03
SUMMARY
TOTAL DRAINAGE AREA OF LAKE = 409.2
SUM OF SUB-DRAINAGE AREAS = 401.4
TOTAL FLOW IN = 22.62
TOTAL FLOW OUT = 22.27
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
FLOW DAY
FLOW DAY
FLOW
1230A1
1230B1
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
0.05
0.09
-0.03
0.08
0.01
0.05
0.07
-0.04
-0.05
0.01
0.05
-0.07
0.15
0.27
-0.10
0.24
0.04
0.14
0.20
-0.12
-0.14
0.03
0.14
-0.21
-------
APPENDIX D
PHYSICAL and CHfMICAL DATA
-------
STORE! RETRIEVAL DATE 75/08/25
123001
28 34 35.0 081 45 50.0
LAKE MINNEOLA
12069 FLORIDA
11EPALES
3
2111202
0014 FEET
DEPTH
DATE
FROM
TO
73/03/15
73/09/06
73/11/07
TIME DEPTH
OF
DAY FEET
09 35 0000
09 35 0005
09 35 0010
16 10 0000
16 10 0008
11 20 0000
11 20 0005
11 20 0011
00010
WATER
TEMP
CENT
25.3
25.3
24.7
29.4
29.3
22.6
22.4
22.4
00300 00077 00094
00 TRANSP CNOUC
SECCHI FIELD
MG/L INCHES MICRO
8.2
8.7
7.8
7.6
8.0
8.0
180
72
84
14
VY
IHO
85
85
90
86
87
88
87
86
00400
PH
SU
7.60
7.60
7.20
7.50
8.30
6.70
6.60
6.60
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
10K
10K
10K
10K
00610
NH3-N
TOTAL
MG/L
0.100
0.040
0.050
0.070
0.030
0.050
0.040
0.040
00625
TOT KJEL
N
MG/L
0.700
0.400
0.500
1.300
0.800
0.600
0.500
0.500
00630
N02&N03
N-TOTAL
MG/L
0.040
0.020
0.030
0.040
0.030
0.030
0.030
0.030
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.012
0.006
0.010
0.028
0.018
0.014
0.014
00665 32217
DATE TIME DEPTH PHOS-TOT CHLRPHYL
FROM OF A
TO DAY FEET MG/L P UG/L
73/03/15 09 35 0000 0.015 1.7
09 35 0005 0.014
09 35 0010 0.017
73/09/06 16 10 0000 0.020 7.3
16 10 0006 0.034
73/11/07 11 20 0000 0.028 3.0
11 20 0005 0.028
11 20 0011 0.029
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/08/25
123002
28 34 43.0 081 46 50.0
LAKE MINNEOLA
12069 FLORIDA
DATE
FROM
TO
73/03/15
73/09/06
73/11/07
TIME DEPTH
OF
DAY FEET
10 15 0000
10 15 0005
16 45 0000
11 35 0000
11 35 0005
00010
WATER
TEMP
CENT
25.8
25.8
29.8
22.8
22.7
00300
00
MG/L
8.1
7.6
8.0
00077 00094
TRANSP CNDUCTVY
SECCH1 FIELD
INCHES MICROMHO
108
74
60
80
85
86
90
86
11EPALES
3
00400
PH
SU
7.60
7.60
6.80
6.40
6.50
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
10K
2111202
0009
00610
NH3-N
TOTAL
MG/L
0.040
0.040
0.040
0.040
0.040
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.400
0.400
1.000
0.600
0.500
00630
N02&N03
N-TOTAL
MG/L
0.020
0.030
0.030
0.030
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.004
0.005
0.013
0.006
0.011
DATE
FROM
TO
73/03/15
73/09/06
73/11/07
TIME DEPTH
OF
DAY FEET
10 15 0000
10 15 0005
16 45 0000
11 35 0000
11 35 0005
00665
PHOS-TOT
MG/L P
0.013
0.013
0.019
0.027
0.024
32217
CHLRPHYL
A
UG/L
1.0
5.1
2.8
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/08/25
123003
28 33 56.0 081 46 26.0
LAKE MINNEOLA
12069 FLORIDA
00010
DATE TIME DEPTH WATER
FROM OF TEMP
TO DAY FEET CENT
73/03/15 10 40 0000 24.7
10 40 0005 24.7
73/09/06 16 35 0000 29.8
73/11/07 11 45 0000 22.8
11 45 0005 22.7
00300 00077 00094
DO TRANSP CNDUC
SECCHI FIELD
MG/L INCHES MICRO
8.3
7.8
8.2
108
73
84
11EPALES
3
2111202
0009 FEET
DEPTH
14
VY
IHO
75
75
87
85
85
00400
PH
SU
7.70
7.90
6.70
6.60
6.50
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
10K
00610
NH3-N
TOTAL
MG/L
0.040
0.040
0.050
0.040
0.040
00625
TOT KJEL
N
MG/L
0.400
0.400
0.800
0.600
0.500
00630
N02&N03
N-TOTAL
MG/L
0.020
0.020
0.030
0.030
0.030
00671
PHOS-DIS
ORTHO
MG/L P
0.003
0.004
0.008
0.005
0.008
DATE
FROM
TO
73/03/15
73/09/06
73/11/07
TIME DEPTH
OF
DAY FEET
10 40 0000
10 40 0005
16 35 0000
11 45 0000
11 45 0005
00665
PriOS-TOT
MG/L f
0.013
0.014
0.016
0.015
0.019
32217
CHLRPHYL
A
UG/L
0.9
5.5
2.7
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORE! RETRIEVAL DATE 75/08/25
1230A1
28 35 00.0 081 47 00.0
PALATLAKAHA
12095 7.5 CLERMONT HES
0/LAKE MINNEOLA
B*OG NEAR CRYSTAL COVE
11EPALES 2111204
4 0000 FEET
DEPTH
DATE TIME DEPTH N02«»N03
FROM OF
TO DAY FEET
73/03/17
73/04/07
73/05/13
73/06/17
73/07/08
73/08/05
73/09/08
73/11/03
73/12/08
73/12/15
74/01/12
74/02/02
09 25
11 05
10 00
08 00
10 15
15 15
14 00
14 35
10 45
10 40
11 05
11 45
)0630
><»N03
FOTAL
4G/L
0.014
0.021
0.010K
0.010K
0.022
0.016
0.016
0.011
0.028
0.012
0.020
0.020
00625
TOT KJEL
N
MG/L
1.800
1.050
1.470
0.610
3.900
0.580
7.800
0.600
0.600
0.800
0.500
0.800
00610
NH3-N
TOTAL
MG/L
0.080
0.100
0.010
0.032
0.189
0.078
0.800
0.060
0.032
0.04Q
0.032
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.007
0.005K
0.005K
0.012
0.005K
0.013
0.008
0.029
0.012
0.032
0.012
0.015
00665
PHOS-TOT
MG/L P
0.015
0.020
0.035
0.015
0.025
0.025
0.020
0.029
0.020
0.050
0.030
0.015
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/08/25
I230bl
28 34 00.0 081 46 30.0
UNNAMED TRIB
12 7.5 CLERMONT WES
I/LAKE MINNEOLA
BROG OVER CONN BTW LKS MINNEOLA & HIAWAT
11EPALES 2111204
4 0000 FEET DEPTH
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
73/03/17
73/04/07
73/05/13
73/06/17
73/07/08
73/08/05
73/09/08
73/11/03
73/12/08
73/12/15
74/01/12
74/02/02
09 40
11 14
10 15
08 10
10 00
15 00
13 40
15 45
10 30
10 20
11 45
11 30
0630
I&N03
OTAL
IG/L
0.010K
0.014
0.010K
0.010K
0.022
0.240
0.010K
0.010K
0.012
0.010K
0.012
0.008
00625
TOT KJEL
N
MG/L
1.380
0.780
1.500
0.630
0.735
3.200
0.690
0.550
0.600
0.600
0.500
0.700
00610
NH3-N
TOTAL
MG/L
0.048
0.021
0.012
0.024
0.036
1.580
0.037
0.066
0.028
0.028
0.055
0.015
00671
PHOS-DIS
ORTHO
MG/L P
0.006
0.007
0.005K
0.008
0.015
0.005K
0.009
0.01B
0.011
0.020
0.008
0.005
00665
PHOS-TOT
MG/L P
0.015
0.040
0.040
0.010
0.030
0.035
0.035
0.150
0.025
0.035
0.020
0.025
K VALUE KNOWN TO BE
LESS THAN INDICATED
------- |