U.S. ENVIRONMENTAL PROTECTION AGENCY
               NATIONAL EUTROPHICATION SURVEY
                        WORKING PAPER SERIES
                                              REPORT
                                                ON
                                           U\KEPOINSEIT
                                   BREVARD, ORANGE, AND OSCEOLA COUNTIES
                                             FLORIDA
                                           EPA REGION IV
                                        WORKING PAPER No, 271
     CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
                                 and
    ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•5VG.P.O. 699-440

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                                      REPORT
                                        ON
                                  LAKEPOINSETT
                       BREVARD,  ORANGE,  AND OSCEOLA COUNTIES
                                     FLORIDA
                                  EPA REGION IV
                              WORKING PAPER No, 271
          WITH THE COOPERATION OF THE
FLORIDA DEPARTMENT OF ENVIRONMENTAL REGULATION
                   AND THE
            FLORIDA NATIONAL GUARD
                OCTOBER, 1977

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                               CONTENTS
                                                          Page
  Foreword                                                  ii
  List of Florida Study Lakes                               i.v
  Lake and Drainage A sea Map                                 y

  Sections
  I.   Introduction                                           1
 II.   Conclusions                                            1
III.   Lake and Drainage Basin Characteristics                3
 IV.   Lake Water Quality Summary                             4
  V.   Literature Reviewed                                    8
 VI.   Appendices                                             9

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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 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)J,
and water quality monitoring [§106 and §305(b)] activities mandated
by the Federal  Water Pollution Control Act Amendments of 1972.

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                                    m
    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, rnultivariate 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 Eutropfiication 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
LAKL.NAME:

Alligator
Apopka
Banana
Crescent
Doctors
Dora
East Tohopekaliga
Effie
Eloise
George
Gibson
Glenada
Griffin
Raines
Hancock
Horseshoe
Howell
Istokpoga
Jessie
Jessup
Ktssinimee
Lawne
Lulu
Marion
Minnehaha
Minneola
Monroe
Munson
Okeechobee

Poinsett
Reedy
Semi no!e

Seminole
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 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
                            Gladsden,  Leon
                            Pinellas
                            Hillsboro
                            Osceola
                            Lake
                            Polk
                            Lake

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h-28'18'
 LAKE POINSETT
 5 Tributary Sampling Site
X  Lake  Sampling Site
 o        i       2       3 Km
 I	.-•	1	'—,	',
           Scale
                                         ;.*  -fr- '
                                               ; *:~*r
                                               •".x •• "••"
                                               ,. ± t jff-^-.
T "• ... • >. —    -£. • ,i.
  -«. .«. — ». t  «
  	 jaL*  ~ .   *-""
                                                                  . - .*. -.
 -28'ie'

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                               LAKE POINSETT
                              STORE! NO.  1234

 I.  INTRODUCTION
     Lake Poinsett was included in the National  Eutrophication Survey  as
 a water body of interest to the Florida  Department of Environmental Regu-
 lation.  Except for the outlet, tributaries were inaccessible,  and  nutrient
 sources were not sampled.   Therefore, this report primarily relates to the
 lake sampling data.  However, the outlet data (station A-l) are included
 in Appendix E for the record.
II.  CONCLUSIONS
     A.   Trophic Condition:
             Survey data indicate that Lake Poinsett is eutrophic.   It
         ranked sixteenth in overall  trophic quality when the 41
         Florida Lakes sampled in 1973 were compared using a combination
         of six water quality parameters*.   Seventeen of the lakes had less
         and one had the same median total  phosphorus,  22 had less median
         dissolved orthophosphorus, 15 had less  median inorganic nitrogen,
         one had less mean  chlorophyll  a, and 20 had greater mean Secchi
         disc transparency.
             Survey limnologists noted that the  lake had a dark  brown
         humic color during  the sampling.  Much  submerged vegetation and
         patches of water hyacinth were noted at station 1  in November, and
         similar conditions  were observed at station 2 along with fili-
         mentous algae.
 * See  Appendix A.

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                                 2
B.   Rate-Limiting Nutrient:
        The algal assay results indicate that Lake Poinsett was
    limited by nitrogen at the time the sample was collected  (03/15/
    73).   The lake data indicate nitrogen limitation  at all sampling
    stations and times.

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III.   LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
      A.   Lake Morphometry  :
          1.   Surface area:   17.60 kilometers2.
          2.   Mean depth:   1.5 meters.
          3.   Maximum depth:   2.5  meters.
          4.   Volume:  26.400 x 106  m3.
          5.   Mean hydraulic  retention  time:  9  days.
      B.   Tributary and Outlet:
          (See Appendix C  for flow data)
          1.   Tributaries  -
                                                Drainage       Mean flow
              Name                              area  (km2)*    (m3/sec)*
              St.  Johns River and  minor
               tributaries &  immediate  drainage  -  3,429.7          33.05
          2.   Outlet -
              St.  Johns River                     3,447.3**        33.05
      C.   Precipitation***:
          1.   Year of sampling:  124.7  centimeters.
          2.   Mean annual: 142.1  centimeters.
 t  Table of metric  conversions—Appendix B.
 tt Stuart, 1972; depths estimated from soundings  (Appendix D).
 *  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
IV.   LAKE WATER QUALITY SUMMARY
     Lake Poinsett was sampled three times in 1973 by means  of a  pon-
 toon-equipped Huey helicopter.   Each time,  samples for  physical
 and chemical  parameters were collected from one or more depths
 at  two stations on the lake (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 1.2
 meters at station 1 and 1.5 meters 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)

CNDCTVY (MCROMO)

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)

INORG N (MG/L)

TOTAL N (MG/L)

CHLRPYL A 
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B.   Biological Characteristics:

    1.  Phytoplankton -

        Sampling
        Date

        03/15/73
        09/05/73
        11/05/73
    2.   Chlorophyll a_ -
Dominant
Genera

1.  Flagellates
2.  Cyclotella sp.
3.  Cryptomonas sp.
4.  Spermatozoopsis sp.
5.  Nitzschia sp.
    Other genera

             Total
Algal Units
per ml	
                                                          3,408
1.
2.
3.
4.
5.
Flagellates
Cyclotella sp.
Spermatozoopsis sp.
Microcystis sp.
Scenedesmus S£.
Other genera
951
885
522
133
44
110
                                              Total
                         2,645
1.
2.
3.
4.
Flagellates
Di no flagellates
Pennate diatoms
Mougeotia(?) sp.
397
82
11
11
                                              Total         501
Sampl i ng
Date
03/15/73
09/05/73
11/05/73
Station
Number
1
2
1
2
1
2
                                                         Chlorophyll a
                                                         (yg/1)

                                                            6.8
                                                            4.0

                                                           17.1
                                                            7.3

                                                            1.3
                                                            2.5

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C.   Limiting Nutrient Study:

    1.   Autoclaved, filtered,  and nutrient spiked -
                         Ortho P
                         Cone, (mq/1)
Spike (mg/1)

Control
0.050 P
0.050 P + 1.0 N
1.0 N
    2.   Filtered and nutrient spiked -
Inorganic N    Maximum yield
Cone, (mg/1)   (mg/1-dry wt.)
0.054
0.104
0.104
0.054
0.251
0.251
1.251
1.251
5.8
6.3
16.0
7.9
        Spike (mg/1)

        Control
        0.050 P      '
        0.050 P + 1.0 N
        1.0 N
                 Ortho P
                 Cone, (mg/1)

                    0.058
                    0.108
                    0.108
                    0.058
Inorganic N    Maximum yield
Cone, (mg/1)   (mg/1-dry wt.)
    0.211
    0.211
    1.211
    1.211
 6.2
 6.7
17.5
11.8
    3.   Discussion -

            The control  yields of the assay alga,  Selenastrum capri-

        cornutum, indicate that the potential  primary productivity

        of Lake Poinsett was moderately high at the time the sample

        was collected (03/15/73).   Also,  the lack  of growth response

        with increasing  levels of orthophosphorus  until  nitrogen  was

        also added indicates that the lake was nitrogen  limited at

        that time.  Note that the addition of only nitrogen resulted

        in a yield significantly greater than that of the control.

            The lake data also indicate nitrogen limitation.   The

        mean inorganic nitrogen to orthophosphorus ratios were 4  to 1

        or less at all sampling stations  and times,  and  nitrogen  limi-

        tation would be  expected.

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                                     8

V.  LITERATURE REVIEWED

    Stuart, Tim S., 1972.  Personal communication (area of lake).  FL
        Dept. of Env. Reg., Tallahassee.

    Vollenweider, R. A., and P. J. Dillon, 1974.  The application of
        the phosphorus loading concept to eutrophication research.
        Natl. Res. Council of Canada Publ. No. 13690, Canada Centre
        for Inland Waters, Burlington, Ontario.

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VI.  APPENDICES
                                  APPENDIX A
                                  LAKE  RANKINGS

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LAKE DATA TO BE USED .IN RANKINGS

LAKE
CODE  LAKE NAME

1201  ALLIGATOR LAKE

1202  LAKE APOPKA

1203  LAKE BANANA

1206  LAKE CRESCENT

1207  DOCTORS LAKE

1208  LAKE DORA

1209  LAKE EFFIE

1210  LAKE GEORGE

1211  LAKE GIdSON

1212  GLEMADA LAKE

121"»  LAKE GRIFFIN

1215  LAKE HAINES

1217  LAKE HANCOCK

1219  LAKE HORSESHOE

1220  LAKE HOWELL

1221  LAKE ISTOKPOGA

122J  LAKE JESSUP

1224  LAKE KISSIMMEt

1227  LAKE LULU

1228  LAKE MARION

1229  LAKE MINNEHAHA

1230  LAKE MJNNEOLA

1231  LAKE MONROE

1232  LAKE OKEECHOdEE

i23<»  LAKE POINSETT

1236  LAKE PFEOY

1238  LAKE SOUTH

1239  LAKE TALOUIN
MEDIAN
TOTAL P
0.b2C
0.103
0.660
0.065
0.084
0.102
1.483
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
0.018
0.138
0.063
0.085
0.033
0.074
0.085
MEDIAN
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 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
435.000
406.333
474.555
472.366
469.000
468.500
464.000
462.167
MEAN
CHLO^A
87.733
4(3.611
208.600
10.211
27.100
59.978
261.433
35.000
19.675
27.667
66.855
26.567
97.900
12.067
54.117
6.594
76.550
24.142
276.566
29.967
8.733
3.333
14.225
14.524
6.500
34.837
23.167
9.483
15-
MIN 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
10.600
10.600
9.000
14.400
MED I AN
DISS OrfTHO
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. 12M
0.010
O.Obl
0.008
0.028
0.031

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LAKE DATA TO BE USED IN RANKINGS
LAKE
COOE  LAKE NAME
12*0  LAKE THONOTOSASSA
12*1  LAKE TOHOPEKALIGA
12*2  TROUT LAKE
12*3  LAKE WEOHYAKAPKA
12*6  LAKE YALE
1247  LAKE MUNSON
12*8  LAKE SEMINOLE
12*9  LAKE LAWNE
1250  LAKE TARPON
1252  LAKE ELOISE
1258  LAKE JESSIE
1261  EAST LAKE TOHOPEKALIGA
126*  PAYNE'S PRAIRIE LAKE (NO
MEDIAN
TOTAL P
0.695
0.2*6
1.110
0.0*7
0.027
l.*75
0.23*
2.560
0.0*1
0.*86
0.051
0.0*2
1.260
MtDIAN
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
*58.667
**1.000
*86.667
*73.833
*9*.667
*00.889
*65.333
*52.667
**0.833
*76.000
MEAN
CHLOHA
37.700
30.633
76.967
7.767
25.367
1*0.317
102.000
8*. 900
6.867
70.233
26.300
5.167
38.200
15-
MIN 00
10.200
10.500
12.900
8.200
7.600
12.200
6.600
10. tOO
9.000
12.200
10.800
9.*00
7.*00
MEDIAN
OISS 0«THO P
0.565
0.152
0.970
0.011
0.01*
0.852
0.026
0.117
0.1)27
0.339
0.011
0.007
1.210

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        Of LAKES KITH 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
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 KISS1MMEE
1227  LAKE LULU
1228  LAKE MARION
1229  LAKt MINNEHAHA
1230  LAKE MINNEOLA
1231  LAKE MONROE
1232  LAKE OKEECHOdEE
123*  LAKE POINSETT
1236  LAKE WEEDr
1238  LAKE SOUTH
1239  LAKE TALOUIN
MEDIAN .
TOTAL P
25
50
23
65
60
53
5
45
40
43
4P
70
18
93
11
85
28
90
3
78
88
100
38
68
58
95
63
55
( 10)
< 20)
( 9)
( 26)
( 24)
( 21)
( 2)
( 16)
< 16)
( 17)
( 19)
( 28)
( 7)
( 37)
( 4)
< 34)
( 11)
< 36)
( 1)
( 31)
( 35)
( 40)
< 15)
< 27)
( 23)
( 36)
( 25)
< 22)
MEDIAN
lNOr?G N
29
36
29
70
76
35
10
54
61
54
29
81
43
70
23
76
1*
63
3
29
91
98
15
45
60
13
70
20
( 10)
( 15)
( 10)
( 27)
( 30)
( 14)
( 4)
( 21)
( 32)
( 21)
( 10)
( 32)
( 17)
( 27)
( 9)
( 30)
( 7)
( 25)
( 1)
( 10)
( 36)
( 38)
( 6)
( IB)
( 24)
< 5)
( 27>
( 8)
500-
MEAN SEC
30 (
10 (
20 (
33 (
60 (
18 (
3 (
48 (
45 (
85 <
23 (
75 (
13 (
00 (
6V (
65 <
5 (
73 (
15 (
53 <
95 <
98 (
2tt (
40 (
50 (
55 (
69 (
78 (
12)
4)
8)
13)
24)
7)
1)
19)
18)
34)
9)
30)
5)
32)
27)
26)
2)
29)
6)
21)
38)
J9>
11)
16)
20)
22)
27)
3D
MEAN
CHLOHA
18 (
38 (
5 (
80 (
55 <
33 (
3 (
43 (
7C (
53 (
30 (
58 (
13 <
78 1
35 (
93 (
25 (
e>5 (
0 (
bO (
85 (
100 (
/5 (
73 <
95 (
4S (
68 (
83 (
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)
It*)
27)
33)
15-
MIN 00
10
74
100
48
34
90
0
23
48
3
95
34
98
20
60
69
83
65
8
83
78
90
26
53
34
34
60
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)
MEOIAN
OISS OtfTHO H
18
70
23
50
56
68
10
43
40
38
48
78
26
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)
( 3U)
( 22)
( 21)
INDEX
NO
1JO
260
200
346
341
297
31
256
324
276
273
396
213
t06
201
477
184
4a5
34
366
517
579
215
368
342
33 1
3d 6
294

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PERCENT OF LAKES WITH HIGHER VALUES (NUMBED OF LAKES WITH HIGHEW VALUES)
LAKE
CODE  LAKE NAME
1240  LAKE THONOTOSASSA
      LAKE TOHOPEKALIGA
      TROUT LAKE
12*3  LAKE KEOHYAKAPKA
12*6  LAKE YALE
1247  LAKE MUNSON
12*8  LAKE SEMINOLE
12*9  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
9B
a
35
0
83
30
73
80
11
( 8)
( 13)
(' 6)
( 30)
( 39)
( 3)
( 14)
( 0)
( 33)
( 12)
( 29)
( 32>
( 4)
MEDIAN
INORG 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
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 00
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)
MEOUN
OISS OHTHO 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)
NO
26t>
229
110
495
467
58
260
98
491
207
419
523
206

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LAKES RANKED Br INDEX'NOS.
RANK  LAKE CODE  LAKE  NAME                INDEX  NO

   i  ia30       LAKE  MINNEOLA              579
   2  1261       EAST  LAKE  TOriOPEKALIGA     523
   3  1229       LAKE  MINNEHAHA             517
   4  1243       LAKE  WEOHYAKAPKA           495
   5  1250       LAKE  TARPON                491
   6  1221       LAKE  ISTOKPOGA             477
   7  1246       LAKE  YALE                   467
   8  1224       LAKE  KISSIMMEE             455
   9  1258       LAKE  JESSIE                419
  10  1219       LAKE  HORSESHOE             406
  11  1215       LAKE  HAINES                396
  12  1238       LAKE  SOUTH                 386
  13  1232       LAKE  OKEECHOBEE            368
  14  1228       LAKE  MARION                366
  15  1206       LAKE  CRESCENT              346
  16  1234       LAKE  POINSETT              342
  17 . 1207       DOCTORS LAKE               341
  18  1236       LAKE  «EED»                 337
  19  1211       LAKE  GIBSON                3?4
  20  1208       LAKE  DORA                   297
  21  1239       LAKE  TALOUIN               294
  22  1202       LAKE  APOPKA                280
  23  1212       GLENADA LAKE               276
  24  1214       LAKE  GRIFFIN               273
  25  1240       LAKE  THONOTOSASSA          266
  26  1248       LAKE  SEMINOLE              260
  27  1210       LAKE  GEORGE                256
  28  1241       LAKE  TOHOPEKALIGA          229

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LAKES RANKED BY INOEA NOS.




RANK  LAKE CODE  LAKE NAME               INDEX NO






  29  1331       LAKE MONROE                215




  30  1217       LAKE HANCOCK               ^l^



  31  1252       LAKE ELOISE                207




  32  1264       PAYNE'S PRAIRIE LAKE 
-------
    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 p pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile

-------
    APPENDIX C
TRIBUTARY FLOW DATA

-------
                                   TRIBUTARY FLOW  INFORMATION FOR FLORIDA
                                                                               8/2S/75
LA
-------
        APPENDIX D





PHYSICAL and CHEMICAL DATA

-------
STOKET HETRIEVAL DATE "75/08/25
                                                                   123401
                                                                  28  21  00.0  080  51
                                                                  LAKE POINSETT
                                                                  1200Y    FLORIDA
11EPALES 2111202
3 0004 FEET

DATE
FROM
TO
73/03/15

73/09/05
73/11/05


DATE
FROM
TO
73/03/15

73/09/05
73/11/05


TIME DEPTH
OF
DAY FEET
09 30 0000
09 30 0002
09 50 0000
14 45 0000
14 45 0004

TIME DEPTH
OF
DAY FEET
09 30 0000
09 30 0002
09 50 0000
14 45 0000
14 45 0004
00010
WATER
TEMP
CENT

25.0
29.0
23.9
23.8
00665
PHOS-TOT

MG/L P
0.090
0.084
0.097
0.051
0.071
00300
DO

MG/L

6.
6.

5.
32217





3
0

0

00077 00094
TRANSP CNDUCTVY
SECCHI FIELO
INCHES MICROMHO
32 580
550
20 460
48 343
342

00400 00410 00610
PH T ALK NHJ-N
CAC03 TOTAL
SO MG/L MG/L
8.10 36 0.060
8.50 38 0.060
7.20 50 0.110
7.30 30 0.090
8.20 33 0.070

DEPTH
00625
TOT
N
KJEL

MG/L
1
1
2
1
1

.900
.600
.400
.600
.300

00630
N02&N03
N-TOTAL
MG/L
0.090
0.090
0.210
0.060
0.050

00671
PHOS-DIS
ORTMO
MG/L
0.
0.
0.
0.
0.

P
050
051
074
040
052

CHLRPHYL
A
UG/L
6.

17.
1.



8

1
3



















































-------
STJRET KETSIEVAL DATE 75/08/25
                                                                  123*02
                                                                 28  20  01.0  060  49  23.0
                                                                 LAKE FOINSETT
                                                                 1200*   FLORIDA
DAlt
FrtOM
10
73/03/15

73/09/05
73/11/05


DATE
FrtOM
TO
73/03/15

73/09/05
73/11/05

TIME DEPTH
OF
DAY FEET
10 00 0000
10 00 0004
09 50 0000
15 00 0000
15 00 0005

TIME DEPTH
OF
DAY FEET
10 00 0000
10 00 0004
09 50 0000
15 00 0000
15 00 0005
00010
WATER
TEMP
CtNT
2b.O
25.0
29.2
23.8
23.7
00665
PHOS-TOT

MG/L P
0.086
0.086
0.120
0.050
0.052
11EPALES 2111202
3 0006 FEET DEPTH
00300 00077 00094 00400 00410 00610 00625 00630 00671
DO TKANSP CNOUCTVY PH T ALK NH3-N TOT KJEL N02&N03 PHOS-[)IS
SECCHI FIELD CAC03 TOTAL N N-TOTAL OKTHO
MG/L INCHES MICHOMHO SU MG/L MG/L MG/L MG/L MG/L .P

6.0
5.6

4.4
32217
CHLRPHYL
A
UG/L
• 4.0

7.3
2.5

34 520 a. 00 38 0.110 1.500 0.090 0.060
520 7.90 36 0.080 1.400 0.080 0.059
20 680 7.20 52 0.100 2.200 0.170 0.094
32 331 H.10 30 0.090 1.700 0.040 0.033
335 7.90 33 0.080 0.800 0.040 0.040
-?









-------
  APPENDIX E
TRIBUTARY DATA

-------
STORET RETRIEVAL OATE 75/08/35
                                                                  1234A1
                                                                 28 22 00.0 080 52 30.0
                                                                 ST JOHNS RIVE*
                                                                 12093   7.5 LK POINSETT
                                                                 0/LAKE POINSETT
                                                                 ST H«1 530 .5 MI N OF MULBERRY MOUND
                                                                 11EPALES             2111204
                                                                 4                   0000 FEET  DEPTH
  DATE   TIME OtPTl-
  FROM    OF
   TO    DAY  FEET
73/03/17
73/04/1*
73/05/17
73/06/18
73/07/15
73/08/20
73/10/20
73/11/18
73/12/15
74/01/17
74/02/17
15 45
08 50
11 00
12 15
07 15
15 20
09 30
10 30
08 30
09 00
09 00
00630
2&N03
TOTAL
MG/L
0.066
0.034
0.021
0.012
0.040
0.024
0.068
0.028
0.088
0.140
0.040
0062S
Tor KJEL
M
MG/L
1.400
1.500
3.990
1.760
2.400
0.500
1.750
1.2SO
1.300
1.000
1.600
00610
NH3-N
TUTAL
MG/L
0.038
0.029
0.168
0.050
0.126
0.283
0.092
C.076
0.12fa
0.058
0.060
00671
PhOS-OIS
UHThO
MG/L P
0.048
0.055
0.046
0.046
0.015
0.069
0.060
0.036
0.036
0.032
0.030
00665
PHOS-TOT

MG/L P
0.080
0.080
0.075
0.075
0.070
0.115
0.085
0.045
0.040
0.050
0.080

-------