U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
EAST LAKE TOHOPEKfUGA
OSCEOLA COUNTY
FLORIDA
EPA REGION IV
WORKING PAPER No, 249
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.P.O. 699-440
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^ REPORT
i
AT* ON
2 EAST LAKE TOHOfTOLIGA
OXEDLA COUNTY
FLORIDA
EPA REGION IV
WORKING PAPER No, 2®
D
WITH THE COOPERATION OF THE
FLORIDA DEPARTTCNT OF ENVIRONMENTAL REGULATION
AND THE
FLORIDA NATIONAL GUARD
NOVEMBER, 1977
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CONTFNTS
Pajo
Foreword ii
List of Florida Study Lakes iv
Lake and Drainage Area Map v
Se£i;/ions_
I. Conclusions 1
II. Lake and Drainage Basin Characteristics. 4
III. Lake Water Quality Sinrcnary 5
IV. Nutrient Loadings 10
V. Literature Reviewed 15
VI. Appendices 16
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ii
F 0 R E W 0 R D
The National Djtrophicntion Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide1 throat 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 [5106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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Ill
Beyond the single Isl'.e analysis, broader based correlations
between nutrient concciii.rations (and loading) end trophic condi-
tion are being made to advance the rationale and do.t.a base for
refinement of nutrient water quality criteria for the Nation's
fresh water lakes. Likewise, multivsriate 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 F.PA
and to augment plans implementation by the states.
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 Deportment 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
Haines
Hancock
Horseshoe
Howel1
Istokpoga
Jessie
Jessup
Kissimmee
Lawne
Lulu
Marion
Minnehaha.
Minneola
Monroe
Munson
Okeechobee
Poinsett
Reedy
Seminole
Seminole
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
Semi no!e
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
-------
w
Apopka
f*
*r
Altamonte
Springs '
Lake
Maitlanda Ma it land
o*
'Winter
Garden
Orlando
^Mannf
EAST LAKE TOHOPEKALIGA
& LAKE TOHOPEKALIGA
<8> Tributary Sampling Site
X Lake Sampling Site
P Sewage Treatment Facility
o 5 10 is Km.
o 5 Mi.
*Windermere
\Lake
hi bet
^^
Little Lake,
Conway/
2830-
^•~
r^
U
Jaft
b**
' Mtid
Lake
J-ake
Mart
}Lake
)Mary
Jane
1*&
^
%^
:.,/ /
\Lake
^Russell
,V*L
'jGentry
^ *
J\
xy^
v-^ \Hatchineha
U\81i30
[cyf
*f*i
t,^*«
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EAST LAKE TOHOPEKALIGA
STORE! NO. 1261
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that East Lake Tohopekaliga is
mesotrophic. It ranked second in overall trophic quality
when the 41 Florida lakes sampled in 1973 were compared
using a combination of six parameters*. Eight of the lakes
had less median total phosphorus, none of the other lakes
had less but one had the same median dissolved phosphorus,
none had less but two had the same median inorganic nitrogen,
one had less mean chlorophyll a_, and three had greater mean
Secchi disc transparency.
Survey limnologists reported extensive growths of rooted
aquatic plants.
B. Rate-Limiting Nutrient:
The results of the algal assay indicate East Lake Toho-
pekaliga was phosphorus limited at the time the sample was
collected (03/13/73). The lake data indicate phosphorus limi-
tation in March but nitrogen limitation in September and
November.
C. Nutrient Controllability:
1. Point sources--Including septic tanks, point sources
* See Appendix A.
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2
contributed an estimated 14.0% of the total phosphorus and 2.5%
of the total nitrogen inputs to East Lake Tohopekaliga during
the Survey sampling year. The McCoy Air Force Base accounted
for 11.9% of the phosphorus load; the Orlando Jetport, 2.1%; and
the estimated septic tank input amounted to less than 1% of the
total load.
The sampling year phosphorus loading of 0.72 g/m2 is 1.8 times
that proposed by Vollenweider (Vollenweider and Dillon, 1974) as
a eutrophic loading. However, after the Survey sampling was com-
pleted, the number of Air Force Base personnel was sharply reduced;
and at this time, only a maintenance group remains (Dye, 1977).
The change in point-source phosphorus loading resulting from the
personnel reduction is not known, but Survey data indicate that
even complete removal of all point-source inputs would still leave
a loading of 0.62 g/m2/yr or nearly 1.6 times Vollenweider's eutro-
phic loading. While Florida lakes may be able to assimilate phos-
phorus at a higher level than that suggested by Vollenweider (Shan-
non and Brezonik, 1972), it is questionable whether an appreciable
improvement in the trophic condition of the lake would result
from point-source phosphorus control unless other sources can be
controlled as well (see discussion below).
2. Non-point sources—The estimated contributions of non-point
sources accounted for 86.0% of the total phosphorus and 97.5% of the
total nitrogen inputs to the lake during the sampling year. Boggy
Creek contributed 33.5% of the phosphorus load and 16.4% of the
nitrogen load, and the estimated ungaged minor tributary and immedi-
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3
ate drainage contributions accounted for 45.2% of the phosphorus
and 71.4% of the nitrogen inputs.
According to the Orange County Department of Pollution Control
(as cited by Federico and Brezom'k, 1975), dairy farms and cattle
ranches are major contributors of nutrients to Boggy Creek. The
controllability of nutrients from these sources is not known,
but Survey data indicate a reduction of such phosphorus inputs to
Boggy Creek would be necessary, in addition to point-source con-
trol, for a significant improvement in the trophic condition of
East Lake Tohopekaliga.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1":
A. Morphometry
1. Surface area: 49.30 kilometers2.
2. Mean depth: 2.7 meters.
3. Maximum depth: 4.5 meters.
4. Volume: 133.110 x 106 m3.
5. Mean hydraulic retention time: 247 days
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Boggy Creek 230.0 1.65
Unnamed Creek B-l 13.4 0.12
Minor tributaries &
immediate drainage - 505.0 4.46
Totals 748.4 6.23**
2. Outlet -
St. Cloud Canal 797.7*** 6.23
C. Precipitation****:
1. Year of sampling: 122.9 centimeters.
2. Mean annual: 134.1 centimeters.
t Table of metric conversions—Appendix B.
tt Surface area from FL Game & Fresh Water Fish Comm. (Anonymous, 1971);
depths estimated from soundings reported in Appendix D.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Sum of inflows adjusted to equal gaged outflow.
*** Includes area of lake.
**** See Working Paper No. 175.
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5
III. WATER QUALITY SUMMARY
East Lake Tohopekaliga 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 four 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 1.5 meters at
station 1, 4.0 meters at station 2, 2.4 meters at station 3, and 3.0
meters at station 4.
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 OXT (MG/L)
CNDCTVY IMCSOMOI
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (Mfi/L)
ORTHO P (MG/L)
N02»N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
IN03G N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (Ufi/L)
SECCHI (METERS)
22.2
6.2
120.
6.4
10.
0.012
0.003
0.020
0.0-+0
0.400
O.ObO
0.420
3.2
0.8
*». SUM"AKY
1ST SrtMPLl
4 SI
AlMC-n!
- 25.4
- 8.6
- 135.
7.4
lu.
- 0.033
- 0.007
- y.060
- (i.uflO
- 1.400
- u.l...
- 1.^60
a.-*
- 2.4
UK r--.r-.ICAL AND CHEMICAL CHARACTERISTICS FOR
STOKET COOE 1261
.\iG ( 3/
FES
MEA'J
24. j
«.*
12.3.
6.4
1,.
0.021
0.00-*
O.U33
0.049
0.6U9
0 . 0 i .i
0.642
3.8
.2.0
13/73)
MEDIAN
24. 0
d.3
120.
h.9
10.
O.Olfa
0.004
0.030
0.040
O.buO
0 . J 70
0.630
3.8
2.4
2ND SAMPLING ( 9/
RAMiE
28.4 -
5.6 -
lib. -
6.0 -
14. -
0.025 - 0
0.013 - 0
O.OnO - 0
0.040 - 0
0.900 - 1
O.OrtO - 0
0.940 - 1
4.7 -
O.b -
4
29.4
7.0
126.
6.7
18.
.081
.074
.060
.060
.600
.120
.660
7.1
1.9
SITES
MEAN
28.0
. 6.5
123.
6.4
16.
0.052
0.033
0.050
0.052
1.183
0.102
1.233
6.2
1.5
EAST LAKE
6/73)
MEOIAN
28.7
6.6
124.
6.4
15.
0.047
0.026
0.050
0.050
1.150
0.100
1.200
6.4
1.7
TOHOPEKALIGA
3RD
RANGE
22.3 -
7.0 -
105. -
6.3 -
10. -
0.042 - 0
0.006 - 0
0.020 - 0
0.030 - 0
0.900 - 2
0.050 - 0
0.920 - 2
5.0 -
0.5 -
SAMPLING 111/
4
23.1
7.8
116.
6.8
10.
.057
.012
.100
.070
.000
.170
.050
5.9
1.2
SITES
MEAN
22.7
7.5
112.
6.6
10.
0.047
0.009
0.037
0.046
1.110
0.033
1.147
5.5
1.0
7/73)
MEOIAN
22.6
7.5
113.
6.6
10.
0.046
0.008
0.030
0.040
0.950
0.070
0.980
5.6
1.0
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B. Biological characteristics:
1. Phytoplankton -
Sampli ng
Date
03/13/73
09/06/73
11/07/73
2. Chlorophyll
Sampl i ng
Date
03/13/73
09/06/73
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Flagellates
Apham'zomenon sp.
Oscillatoria sp.
Melosira sp.
Ankistrodesmus (?) sp.
Other genera
Total
Lyngbya sj).
Dactylococcopsis sp.
Flagellates
Merismopedia sp.
Chroococcus sp.
Other genera
Total
Melosira sp.
Flagellates
CycloteVIa sp.
Lyngbya sp_.
Dactylococcopsis sp.
Other genera
Total
Station
Number
1
2
3
4
1
2
3
4
Algal units
per ml
191
169
122
81
75
216
854
1,671
1,373
955
537
477
2.640
7,653
1,311
1,079
745
694
347
2.383
6,559
Chlorophyll a
4.1
4.4
3.5
3.2
6.9
6.0
7.1
4.7
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8
Sampl i ng
Date
11/07/73
Station
Number
1
2
3
4
Chlorophyll a
(yg/1)
5.4
5.0
5.9
5.8
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Spike (mg/1)
Ortho P
Cone, (mg/1)
Inorganic N
Cone, (mg/1)
Maximum yield
(mg/1-dry wt.)
Control
0.050 P
0.050 P + 1.0
1.0 N
2. Filtered and
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0
1.0 N
0.010
0.060
N 0.060
0.010
nutrient spiked -
Ortho P
Cone, (mg/1 )
0.006
0.056
N 0.056
0.006
0.300
0.300
1.300
1.300
Inorganic N
Cone, (mg/1)
0.258
0.258
1 . 258
1.258
0.1
6.3
15.3
0.1
Maximum yield
(mg/1 -dry wt. )
0.2
6.4
13.6
0.2
3. Discussion -
The control yields of the assay algal, Selenastrum capri-
cornutum, indicate that the potential primary productivity
of East Lake Tohopekaliga was low at the time the sample
was collected (03/13/73). The yield response to the addition
of phosphorus and the lack of increase in yield when nitrogen
alone was added indicate limitation by phosphorus.
The lake data indicate phosphorus limitation in March
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9
but nitrogen limitation 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 03/03/73 09/06/73 11/07/73
1
2
3
4
21/1 (P)
18/1 (P)
23/1 (P)
21/1 (P)
5/1 (N)
4/1 (N)
2/1 (N)
5/1 (N)
12/1 (N)
8/1 (N)
9/1 (N)
8/1 (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.
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 shown are
those measured minus point-source loads, if any.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("II" of U.S.G.S.) were estimated using the nutrient loads,
in kg/km2/yr, at station B-l and multiplying by the II area in km2.
The operator of the McCoy Air Force Base wastewater treatment plant
provided monthly effluent samples and corresponding flow data. However,
the operator of the Orlando Jetport plant did not participate in the
Survey; nutrient loads attributed to this source are based on Orange
County Department of Pollution Control data reported by Federico and
Brezonik (1975).
See Working Paper No. 175.
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11
A. Waste Sources:
1. Known domestic* -
Name
McCoy Air
Force Base
Orlando Jetpo
2. Known industrial - None
Pop.
Served
4,000
varies
Treatment
trickling
f i 1 ter
pkg. plant
Mean Flow
(m'/d)
1,902.6
varies
Receiving
Water
Boggy Creek
Boggy Creek
* Dye, 1977.
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12
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source y_r total
a. Tributaries (non-point load) -
Boggy Creek 11,960 33.5
Unnamed Creek B-l 430 1.2
b. Minor tributaries & immediate
drainage (non-point load) - 16,160 45.2
c. Known domestic STP's -
McCoy Air Force Base 4,245 11.9
Orlando Jetport* 735 2.1
d. Septic tanks** - 30 <0.1
e. Known industrial - None
f. Direct precipitation*** - 2.170 6.1
Total 35,730 100.0
2. Outputs -
Lake outlet - St. Cloud Canal 5,025
3. Net annual P accumulation - 30,705 kg.
* Federico and Brezonik, 1975.
** Estimate based on 100 shoreline 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 y_r total
a. Tributaries (non-point load) -
Boggy Creek . . 59,595 16.4
Unnamed Creek B-l 6,885 1.9
b. Minor tributaries & immediate
drainage (non-point load),- 259,570 71.4
c. Known domestic STP's -
McCoy Air Force Base . 7,160 2.0
Orlando Jetport* 780 0.2
d. Septic tanks** - 1,065 0.3
e. Known industrial - None
f. Direct precipitation*** - 28,595 7.8
Total 363,650 100.0
2. Outputs -
Lake outlet - St. Cloud Canal 228,820
3. Net annual N accumulation - 134,830 kg.
* Federico and Brezonik, 1975.
** Estimate based on 100 shoreline dwellings; see Working Paper No. 175.
*** Brezonik and Shannon, 1971.
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14
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Boggy Creek 52 259
Unnamed Creek B-l 32 514
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/mVyr 0.72 0.62 7.4 2.7
Vollenweider phosphorus loadings
(g/m2/yr) based on estimated mean depth and
hydraulic retention time of East Lake Tohopekaliga:
"Dangerous" (eutrophic loading) 0.40
"Permissible" (oligotrophic loading) 0.20
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15
V. LITERATURE REVIEWED
Anonymous, 1971. Federal Aid in Fish Restoration, Dingell-Johnson
Proj. No. F-21-5, 1970-71 annual progress report. 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, Water Resources
Res. Ctr., U. of FL, Gainesville.
Dye, Craig W., 1977. Personal communication (Jetport treatment
facilities; present status of waste disposal to Boggy Creek).
FL Dept. of Env. Reg., Tallahassee.
Federico, Anthony C., and Patrick L. Brezonik, 1975. A survey of
water quality in the Kissimmee - Okeechobee watershed. FL
Dept. of Env. Reg. Techn. Ser. 1(8).
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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16
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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LAKE DATA TO BE USED IN HANK INGS
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
1215 LAKE HAINES
1217 LAKE HANCOCK
1219 LAKE HORSESHOE
1220 LAKE HOMELL
1221 LAKE ISTOKPOOA
1223 LAKE JES5UP
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 LAKC TALQUIN
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
0.442
0.034
1»49Q
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-
KEAN SEC
474.000
484.176
482.667
473.889
465.555
483.389
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
19.67S
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 PO
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
8.600
14.300
7.600
7.700
7.400
10.800
9.800
10.600
10.600
9.000
14,400
MEDIAN
OISS OHTHO 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
0.01C
0.051
0.008
0.028
0.031
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
1240 L»KE THONOTOSASSA
iz<4i LAKE TOHOPEKALIGA
1242 TSOUT LAKE
1243 LAKE WEOHYAKAPKA
12*6 LAKE YALE
1247 LAKE MUNSON
1248 LAKE SEMINOLE
1249 LAKE LAtfNE
1250 LAKE TARPON
1252 LAKE ELOISE
.1258 LAKE JESSIE
1261 EAST LAKE TOHOPEKALIGA
1264 PAYNE'S PWAIRIC LAKE (NO
MEDIAN
TOTAL P
0.695
0.246
1.110
0.047
0.027
1.475
0.234
2.560
0.041
0.4S6
0.051
0*042
1.260
MEDIAN
INORG N
0.095
0.200
0.650
O.OBO
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
472.003
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 00
10.200
10.500
12.903
8.200
7.600
12.200
8.600
10.400
9.000
12.200
10.800
9.400
7.400
MEDIAN
OISS ORTHO P
0-565
0.152
0.970
o.on
0.014
0.852
0.026
0.117
0.027
0.339
0.011
0.007
1.210
-------
PERCENT or LAKES MITH HIGHER VALUES (NUMBER or LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
1201 ALLIGATOR LAKE
120? LAKE APOPKA
1203 LAKE BANANA
1206 LAKE CRESCENT
1207 DOCTORS LAKE
1208 LAKE CORA
1209 LAKE EFFIE
1210 LAKE GEORGE
1211 LAKE GIBSON
1212 GLENAOA LAKE
1214 LAKE GRIFFIN
1215 LAKE HAINES
1217 LAKE HANCOCK
1219 LAKt HORSESHOE
1220 LAKE HONELL
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 OKEECHOBEE
1234 LAKE POIN5ETT
1236 LAKE HEED*
123d LAKE SOUTH
1239 LAKE TALOUIN
MEDIAN
TOTAL P
25 (
50 (
23 I
65 (
60 (
S3 (
5 (
45 (
40 I
43 <
46 (
70 <
18 (
93 (
11 (
«» <
2« <
90 1
3 <
78 <
88 (
100 1
38 <
68 I
58 (
95 <
63 (
55 (
10)
20)
9)
26)
24)
21)
2)
18)
16)
17)
19)
28)
7)
37)
4)
141
11)
36)
1)
3D
35)
40)
15)
27)
23)
38)
25)
22)
MEDIAN 500-
INORG N MEAN SEC
29 (
38 (
29 (
70 (
76 (
35 (
10 (
54 <
81 (
54 1
29 <
81 C
43 C
70 1
23 <
7k I
IS (
63 (
3 (
29 (
91 (
98 (
15 I
45 (
60 (
13 (
70 1
20 (
10)
15)
10)
27)
30)
14)
4)
21)
32)
21)
10)
32)
17)
2?)
9)
30)
71
25)
1)
10)
36)
38)
6)
18)
24)
5)
27)
8)
30 <
10 <
20 (
33 1
60 (
18 (
3 I
48 1
45 (
65 <
23 (
75 (
13 I
80 (
69 (
•5 1
5 (
73 «
15 (
S3 (
95 (
98 <
28 (
40 (
50 <
55 (
69 C
78 (
12)
4)
81
13)
24)
7)
1)
19)
18)
34)
9)
30)
5)
32)
27)
16)
2)
29)
6>
21)
38)
39)
11)
16)
20)
22)
27)
31)
MEAN
CHLORA
18 ( 7)
38 I IS)
5 ( 2)
80 < 32)
55 < 22)
33 1 13)
3 < 1)
43 ( 17)
70 < 28)
53 ( 21)
30 I 12)
58 ( 23)
13 1 5)
78 I 31)
35 ( 14)
*3 < 3T)
25 1 10)
65 < 26)
0 < 0)
50 I 20)
85 ( 34)
100 ( 40)
75 ( 30)
73 < 29)
95 ( 38)
45 ( 18)
68 ( 27)
83 1 33)
15-
MIN 00
10 (
74 I
100 (
48 (
34 (
90 (
0 1
23 C
48 (
3 <
95 <
34 <
98 (
20 (
60 1
69 1
63 (
65 4
8 (
83 (
78 (
90 <
26 I
S3 <
34 (
34 (
60 (
5 (
4)
29)
40)
18)
12)
35)
0)
9)
18)
1>
38)
12)
39)
8)
23)
Z7I
32)
261
3)
32)
31)
35)
10)
21)
12)
12)
23)
2>
MEDIAN
OISS ORTHO f
18 (
70 <
23 (
SO I
56 (
68 I
10 <
43 (
40 (
38 (
48 (
78 <
28 C
65 <
3 (
a« <
25 (
99 <
5 (
73 (
80 (
93 (
33 <
89 (
45 (
95 (
56 (
53 I
71
28)
9)
20)
22)
27)
4)
17)
16)
15)
19)
31)
11)
26)
1)
JSI
10)
39)
2)
29)
321
37)
:3>
35)
18)
38)
22)
21)
INDEX
NO
no
280
330
346
341
297
31
256
324
276
273
396
213
406
201
47?
164
435
34
366
517
579
215
368
342
33?
3d6
2*4
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES MITH HIGHER VALUES)
LAKE
CODE LAKE NAME
1240 LAKE THONOTOSASSA
1241 LAKE TOHOPEKALIGA
1242 TROUT LAKE
1243 LAKE WEOHTAKAPKA
1246 LAKE YALE
1247 LAKE MUNSON
1248 LAKE SENIMOLE
12".9 LAKE LAMNE
1250 LAKE TAMPON
1252 LAKE ELOISE
1258 LAKE JESSIE
1261 EAST LAKE TOHOPEKALIGA
126<* PAYNE'S PRAIRIE LAKE (NO
MEDIAN
TOTAL P
20
33
15
75
98
a
35
0
83
30
73
30
11
< 8)
( 13)
( 6)
( 30)
( 39)
< 3)
( 14)
< 0)
< 33)
1 12)
4 29)
( 32)
( 4)
MEDIAN
INORG N
85
40
a
91
58
5
48
0
98
50
88
98
65
( 34)
( 16)
( 3)
( 36)
< 23)
( 2)
( 19)
( 0)
( 38)
( 20)
( 351
I 38)
4 26)
500-
MEAN SEC
58 (
38 <
43 (
83 4
90 (
a (
35 (
0 4
. 100 4
63 (
88 4
93 4
25 4
23)
15)
17)
33)
36)
3)
14)
0)
40)
25)
35)
37)
10)
MEAN
CrtLOHA
40 4
48 4
23 4
88 (
63 4
8 4
10 4
20 4
90 (
28 4
60 4
98 4
IS 4
'.6)
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
4 18)
I 16)
4 S)
4 29)
4 32)
4 6)
4 27)
4 17)
4 23)
4 6)
4 10)
4 22)
4 35)
MEDIAN
OISS OHTHO P
15 4
30 4
8 4
84 4
75 4
13 4
63 4
35 4
60 4
20 4
84 4
99 4
0 4
6)
12)
3)
33)
30)
b)
25)
14)
?4)
8)
33)
39)
0)
INDEX
NO
266
229
110
495
467
58
260
V»
491
207
419
523
206
-------
CAKES RANKED BY INDE* NOS.
HANK LAKE CODE LAKE NAME INDEX NO
i 1230 LAKE MINNEOLA 579
2 1261 EAST LAKE TOHOPEKALIGA 523
3 1229 LAKE MINNEMAHA 517
4 1243 LAKE WEOHYAKAPKA 495
5 1250 LAKE TARPON 491
6 1221 LAKE ISTOKP06A 47?
7 1246 LAKE YALE 467
8 1224 LAKE KISSIMHEE 455
9 1258 • LAKE JESSIE 419
10 1219 LAKE HORSESHOE 406
11 1215 LAKE HAINES 396
12 1238 LAKE SOUTH 386
13 1232 LAKE OKEECHOBEE 368
14 1228 LAKE MARION 366
15 1206 LAKE CRESCENT 346
16 1234 LAKE POtNHtf 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 280
23 1212 GLENAOA LAKE 276
24 1214 LAKE GRIFFIN 273
25 1240 LAKE THONOTOSASSA 266
26 1248 LAKE SEMIMOLE 260
27 1210 LAKE GEORGE 256
28 1241 LAKE TOHOPEKALIGA 229
-------
LAKES RANKED BY INDEX NOS.
RAMK LAKE CODE LAKE NAME INDEX NO
29
30
31
32
33
3*
35
36
3T
38
39
-------
APPENDIX B
CONVERSIONS 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 iniles
Cubic meters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 = inches
Kilocjrams x 2.205 - pounds
Ki loqmms/square kilometer x 5.711 ~- Ibs/square mile
-------
APPLNDIX C
TRIBUTARY FLOW DATA
-------
LAKE CODE 1261
TRIBUTARY FLOW INFORMATION FOR FLORIDA
EAST LAKE TOHOPEKALIGA
8/25/75
TOTAL DRAINAGE AREA OF LAKEtSu KM)
TRIBUTARY
1261 A 1
1261B1
1261C1
1261ZZ
SUB-DRAINAGE
AREA (SO KM) JAN
230.0
13.4
797.7
505.0
O.H5
0.06
4.7fc>
2.76
FEB
1.61
O.C9
5.69
3.17
797.
MAR
2.61
0.14
7.65
4.84
7
APR
0.45
0.08
7.02
2.80
MAY
0.23
0.04
4.39
1.47
NORMALIZED FLOWS(CMS)
JUN JUL AUG
1.36
0.07
4.50
2.49
2.83
0.11
6.85
3.77
3.14
0.13
8.92
4.56
SEP
4.08
0.20
6.91
7.02
OCT
1.56
0.22
8.61
7.56
NOV
0.68
0.16
5.49
5.75
DEC
0.37
0.09
3.65
3.23
MEAN
1.65
0.12
6.23
4.12
TOTAL DRAINAGE AKEA OF LAKE = 797.7
SUM OF SUB-DRAINAGE AREAS = 748.5
MEAN MONTHLr FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
12blAl
126181
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
0.71
0.71
0.20
0.62
1.70
2.63
6.12
2.46
0.65
0.31
0.21
0.13
0.20
0.11
0.15
0.05
0.10
0.07
0.42
0.05
0.01
0.01
0.03
0.02
17
17
13
17
7
5
8
3
8
12
2
U
17
13
17
7
5
8
3
8
12
2
FLOW DAY
0.42
0.54 7
0.19
0.37
2.55
3.45
6.14
5.10
0.28
0.21
0.16
0.40
0.31
0.21
0.07
0.17
0.20
1.02
0.31
0.25
-0.01
0.01
15
15
SUMMARY
TOTAL FLOW IN
TOTAL FLOW OUT
70.62
74.64
FLOW DAY
0.76
FLOW
0.28
0.08
-------
LAKE CODE 1261
TRIBUTARY FLO* INFORMATION FOR FLORIDA
EAST LAKE TOHOPEKALIGA
8/25/75
MEAN MONTHLY FLOWS AND UAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
1261C1
1261ZZ
3
<4
5
b
7
8
9
10
11
12
1
2
3
4
5
6
7
R
9
10
11
12
1
2
73
73
73
73
73
73
73
73
73
73
7<»
74
73
73
73
73
73
73
73
73
73
73
74
74
7.65
5.78
5.78
0.0
0.62
3.43
7.67
5.24
0.0
0.0
0.0
0.0
0.63
2.2^
C.23
0.99
1.36
4.22
4.76
5.04
0.59
0.06
1.44
0.54
17
17
13
17
7
5
8
3
8
12
2
17
7
13
17
7
5
8
3
8
12
2
FLO* DAY
12.40
7.67 7
10.93
0.0
0.0
5.35
8. 86
0.0
0.0
0.0
0.0
-3l&0
2.66
-2.15
-3.43
1.50
-24.86
-5.75
-B.66
0.48
-0.28
FLOW DAY
8.58
FLOW
15
17
0.0
13.56
15
2.72
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORE! RETRIEVAL DATE 75/08/^5
126101
28 19 49.0 081 IS 16.0
EAST LAKE TOHOPEKALIGA
12097 FLORIDA
DATE
FROM
TO
73/03/13
73/09/06
73/11/07
TIME
OF
DAY
09 25
09 25
15 35
08 20
08 20
DEPTH
FEET
0000
0005
0000
0000
0005
00010
WATER
TEMP
CENT
25.
25.
29.
22.
22.
4
1
4
9
a
00300 00077
DO TRANSP O
SECCHI FIELD
MG/L INCHES M]
6.2
6.4
7.0
33
31
20
11EPALES
3
2111202
0009 FEET
DEPTH
94
TVY
MHO
135
130
116
105
105
00400
PH
SU
6.40
6.80
6.00
6.30
6.30
00410
T ALK
CAC03
MG/L
10K
10K
16
10K
10K
00610
NH3-N
TOTAL
MG/L
0.080
0.070
0.060
0.070
0.070
00625
TOT KJEL
N
MG/L
1.400
1.100
1.600
2.000
1.600
00630
N02&N03
N-TOTAL
MG/L
0.060
0.060
0.060
0.050
0.100
00671
PHOS-OIS
ORTHO
MG/L P
0.007
0.006
0.013
0.012
0.012
DATE
FROM
TO
73/03/13
73/09/06
73/11/07
TIME DEPTH
OF
DAY FEET
09 25 0000
09 ?5 0005
15 35 0000
08 20 0000
08 20 0005
00665
PHOS-TOT
MG/L P
0.029
0.033
0.039
0.057
0.050
32217
CHLRPHYL
A
UG/L
4.1
6.9
5.4
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL JATE 75/08/25
126102
28 18 08.0 081 16 31.0
EAST LAKE TOHOPEKALIGA
12097 FLORIDA
DATE
FROM
TO
73/03/13
73/09/06
TIME
OF
DAY
10 00
10 00
10 00
DEPTH
FEET
0000
0005
0011
15 15 0000
IS 15 0013
73/11/07
DATE
FROM
TO
73/03/13
73/09/06
73/11/07
08 30
08 30
08 30
TIME
OF
DAY
10 00
10 00
10 00
15 15
15 15
08 30
08 30
08 30
0000
0005
•0011
DEPTH
FEET
0000
0005
0011
0000
0013
0000
0005
0011
00010
WATER
TtMP
CENT
24. <»
24.3
22.2
28.9
28.4
22.7
22.6
22.6
00665
PHOS-TOT
MG/L P
0.016
0.016
0.018
0.042
0.052
0.045
0.044
0.045
00300 00077 00094
DO TRANSP CNOUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
8.2
8.0
6.8
6.6
7.8
7.8
32217
CHLRPHYL
A
UG/L
4.4
6.0
5.0
96 120
120
120
60 123
123
44 113
113
114
11EPALES
3
00400 00410
PH T ALK
CAC03
su
6.90
6.70
6.60
6.40
6.40
6.60
6.60
6.70
MG/L
10K
10K
10K
15
18
10K
10K
10K
2111202
0015 FEET DEPTH
00610 00625 00630 00671
NH3-N TOT KJEL N02&N03 PHOS-DIS
TOTAL N N-TOTAL ORTHO
M&/L
0.040
0.050
0.040
0.050
0.050
0.040
U.030
0.040
MG/L
0.500
0.400
0.500
1.200
1.000
1.000
0.900
0.900
MG/L
0.030
0.030
0.020
0.050
0.050
0.030
0.020
0.020
MG/L P
0.004
0.004
0.004
0.017
0.030
0.007
0.007
0.008
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STCMET RETRIEVAL DATE 75/08/2b
126103
28 16 04.0 081 17 39.0
EAST LAKE TOHOPEKALIGA
12097 FLORIDA
DATE "
FROM
TO
73/03/13
73/09/06
73/1 1/07
TIME DEPTH
OF
DAY FEET
10 45 0000
10 45 0004
10 45 0008
14 45 0000
14 45 0006
08 45 0000
08 45 0006
00010
WATER
TILMP
CENT
24.5
23.7
28.6
28.5
23.1
23.0
11EPALES
00300
DO
MG/L
8.3
8.3
6.6
7.0
7.6
00077
TKANSP
SECCHI
INCHES
96
72
3b
00094
CNDUCTVY
FIELD
MICROMHO
120
120
120
126
125
116
112
3
00400
PH
su
7.00
7.00
7.00
6.70
6.70
6.70
6. 80
00410
T ALK
CAC03
MG/L
10K
10K
10K
14
15
10K
10K
2111202
0012
00610
NH3-N
TOTAL
MG/L
0.050
0.040
0.040
O.OSO
0.040
0.040
0.040
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.500
0.500
0.400
1.300
0.900
1.000
0.900
00630
N02&N03
N-TOTAL
MG/L
0.030
0.020
0.030
0.050
0.040
0.030
0.020
00671
PHOS-DIS
OUT HO
MG/L P
0.003
0.003
0.003
0.042
0.074
0.006
0.008
00665 32217
DATE TIME DEPTH PHOS-TOT CHLRPHYL
FROM OF A
TO DAY FEET MG/L P UG/L
73/03/13 10 45 0000
10 45 0004
10 45 0008
73/09/06 14 45 0000
14 45 0006
73/11/07 08 45 0000
08 45 0006
0.012
0.012
0.015
0.076
0.081
0.042
0.047
3.5
7.1
5.9
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/08/25
126104
28 17 27.0 081 18 16.0
EAST LAKE TOHOPEKALIGA
12097 FLORIOA
DATE
FROM
TO
73/03/13
73/09/06
73/11/07
TIME
OF
DAY
11
11
11
15
09
09
09
25
25
25
00
00
00
00
DEPTH
FEET
0000
0004
0008
0000
0000
0005
0010
00010
wATER
TEMP
CENT
23.6
23.6
22.8
28.9
22.3
22.3
22.3
00665
DATE
FROM
TO
73/03/13
73/09/06
73/11/07
TIME
OF
DAY
11
11
11
15
09
09
09
25
DEPTH
FEET
0000
25 0004
25
00
00
00
00
0008
0000
0000
0005
0010
PHOS-TOT
MG/L P
0
0
0
0
0
0
0
.026
.025
.025
.025
.047
.047
.044
00300
00
MG/L
8.
6.
5.
7.
7.
32217
11EPALES
3
00077 00094 00400 00410
TRANSP CNOUCTVY PH T ALK
SECCHI FIELD CAC03
INCHES MICROMHO SU
96 120 7.40
6 120 7.40
6 125 6.80
6 76 126 6.50
48 114 6.70
4 113 6.60
4 115 6.60
MG/L
10
10K
10K
15
10K
10K
10K
2111202
0012 FEET
00610 00
NH3-N TOT 1
TOTAL N
MG/L
0.040
0.050
0.040
0.060
0.050
0.040
0.040
MG.
0
0
0
1
1
0.
0.
CHLRPHYL
A
UG/L
3.
4.
5.
2
7
8
DEPTH
0.500
400
500
100
1.000
900
900
00630
N02&N03
N-TOTAL
MG/L
0.030
0.020
0.030
0.050
0.040
0.030
0.030
00671
PHOS-DIS
ORTHO
MG/L P
0.003
0.003
0.004
0.022
0.011
0.009
0.009
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL -DATE 75/D8/25
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
73/03/17
73/04/07
73/05/13
73/06/17
73/07/07
73/08/05
73/11/03
73/12/08
73/12/15
74/01/12
74/02/02
09 00
11 45
11 10
09 30
12 20
10
11
14 00
09 30
15 00
11 45
13 45
45
15
1261A1
28 21 00.0 081 19 00.0
BOGGY CREEK
12105 7.5 N ST CLOUD
T/E LAKE TOHOPEKALIGA
ST HWY 530 BRDG 1 Ml SW OF LOCK HAVEN CH
11EPALES 2111204
4 0000 FEET DEPTH
i0630
I&N03
OTAL
IG/L
0.050
C.032
0.024
0.040
0.023
0.013
0.004
0.069
0.064
0.010K
0.192
0.028
00625
TOT KJEL
N
MG/L
3.500
1.500
0.740
2.200
0.917
1.200
1.100
1.150
0.600
0.300
0.700
0.600
00610
NH3-N
TOTAL
MG/L
0.260
0.069
0.044
0.150
0.044
0.046
0.096
0.092
0.040
0.036
0.020
0.040
00671
PHOS-DIS
ORTHO
MG/L P
0.350
0.270
0.350
0.440
0.280
0.273
0.216
0.230
0.200
0.152
0.224
0.250
00665
PHOS-TOT
MG/L i*
0.380
0.300
0.400
0.470
0.360
0.330
0.220
0.390
0.200
0.195
0.270
0.290
-------
STORE! RETRIEVAL DATE 75/08/25
1261bl
28 Ib 00.0 081 16 00.0
UNNAMED CREEK
12 7.5 N ST CLOUD
T/E LAKE TOHOPEKALIGA
KD BROG LEADING N FROM ST CLOUD
11EPALES 2111204
4 0000 FEET DEPTH
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
73/03/17
73/04/17
73/05/13
73/06/17
73/07/07
73/08/05
73/09/08
73/11/03
73/12/08
73/12/15
74/01/12
74/02/02
09 55
11 15
10 30
10 40
13 00
11 00
12 55
09 30
14 45
10 30
14 10
11
11
25
45
0630
'&N03
OTAL
IG/L
0.017
0.035
0.027
0.010K
0.010K
0.010*
0.010K
0.040
0.011
0.016
0.010K
0.012
0.008
00625
TOT KJEL
N
MG/L
3.000
3.400
1.150
1.050
2.800
0.840
1.113
4.500
1.400
0.800
0.600
1.000
0.800
00610
NH3-N
TOTAL
MG/L
0.099
0.150
0.168
0.014
0.215
0.042
0.031
0.366
0.080
0.040
0.056
0.040
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.025
0.017
0.014
0.018
0.510
0.019
0.020
0.016
0.030
0.012
0.016
0.012
0.015
00665
PHOS-TOT
MG/L f>
0.050
0.075
0.040
0.052
0.620
0.030
0.060
0.016
0.160
0.165
0.030
0.030
0.055
-------
STORET RETRIEVAL DATE 75/08/25
1261C1
28 16 00.0 081 18 30.0
ST CLOUD CANAL
12 7.5 N ST CLOUD
0/E LAKE TOHOPEKALIGA
ST HWr 523 UWOG I MI NW OF ST CLOUD
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
ro
73/03/17
73/04/17
73/05/13
73/06/17
73/07/07
73/08/05
73/09/08
73/11/03
73/12/08
73/12/15
74/01/12
74/02/02
00630 00625
TIME DEPTH N02iN03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
12
10
11
11
10
12
10
14
11
13
11
11
32
00
45
05
20
30
45
00
30
20
45
15
35
MG/L
0
0
0
0
0
0
0
1
0
0
0
0
0
.017
.020
.022
.010K
.02*
.010*
.010K
.430
.010K
.012
.010K
.010K
.004
MG/L
2.
1.
0.
0.
0.
0.
0.
4.
1.
0.
1.
1.
0.
900
900
600
650
590
635
190
000
650
700
000
200
900
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
1.
0.
0.
0.
0.
0.
100
084
014
014
028
021
079
840
147
052
040
112
100
MG/L
0.
0.
0.
0.
0.
0.
0.
1.
0.
0.
o.
0.
0.
p
012
005K
010
012
008
015
008
840
022
020
132
024
020
MG/L P
0.020
0.025
0.020
0.030
0.025
0.032
0.030
2.200
0.080
0.030
0.180
0.085
0.065
-------
STORE! RETRIEVAL DATE 75/03/2b
1261AA TF1261AA P004000
29 27 00.0 080 19 30.0
MCCOY «FB
12105 1-250000 UKLANDO
T/EAST LAKE TOHOPEKAL1GA
BOGGY CREEK
11EPALES 2141204
4 0000 FEET DEPTH
00630
DATE TIME DEPTH N02&.N03
FROM OF .-J-TOTAL
TO DAY FEET MG/L
73/02/28 08 00
CP(T>-
73/03/01 08
73/03/27 00
CP (T) -
73/03/2H 24
73/04/26 00
CP(T)-
73/04/26 24
73/05/20 24
CP(T)-
73/05/21 24
73/07/25 01
CP(T>-
73/07/26 01
73/08/29 00
CP(T)-
73/08/29 24
73/10/04 08
CP(T)-
73/10/05 08
73/10/29 01
CFMT>-
73/10/30 01
73/11/29 08
CP-
73/11/30 08
73/12/28 06
CP(T)-
73/12/28 24
74/01/27 06
74/02/26 08
CP(T)-
74/02/27 08
74/03/22 08
CP(T>-
74/03/23 08
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00 -
00
00
00
00
00
00
00
00
13.000
12.000
10.200
8.200
0.117
6.000
5.300
6.800
10.600
0.200
8.100
7.560
00625 00610
TOT KJEL NH3-N
M TOTAL
MG/L MG/L
4.000 0.830
2.900 0.460
4.400 0.850
0.780 0.390
5.100 0.230
3.900
2.200
2.300
3.600
00671 00665 50051 50053
PHOS-DIS PHOS-TOT FLOW CONDUIT
ORTHO RATE FLOW-MGD
MG/L P MG/L P INST MGD MONTHLY
5.880 6.500 0.461 0.556
6.150 6.700 0.475 0.610
6.100 6.900 0.675 0.423
0.360
0.450
0.045
3.200 0.650
2.800 0.060
3.300 0.530
l.OOOK 0.900
6.200
1.700
4.040
4.400
5.600
0.320
6.775
9.250
4.800
4.600
5.900
5.600
0.512
0.505
1.000
0.586
0.497
0.660
0.592
0.696
0.525
0.513
0.462
0.549
5.100
6.000
4.900
5.600
6.300
5.800
0.413
0.453
0.339
0.350
0.434
0.402
5.000
6.000
0.375
0.422
------- |