U.S. ENVIRONMENTAL PROTECTION AGENCY
               NATIONAL EUTROPHICATION  SURVEY
                        WORKING PAPER SERIES
                                             REPORT
                                              ON
                                           BRUIN LAKE
                                          TENSAS PARISH
                                            LOUISIANA
                                          EPA REGION VI
                                        WORKING PAPER No, 532
     CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
                                 and
    ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.P.O. 699-440

-------
                                   REPORT
                                     ON
                                 BRUIN LAKE
                                TENSAS PARISH
                                  LOUISIANA
                                EPA REGION VI
                            WORKING PAPER No, 532
         WlTH THE COOPERATION OF THE
LOUISIANA WILD LIFE AND FISHERIES COMMISSION
                   AND THE
          LOUISIANA NATIONAL GUARD
                 MARCH, 1977

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            REPORT ON BRUIN LAKE

          TENSAS PARISH,  LOUISIANA

                EPA REGION VI


                     by

       National  Eutrophication Survey

      Water and  Land Monitoring Branch
     Monitoring  Applications Laboratory
Environmental  Monitoring & Support Laboratory
              Las Vegas,  Nevada

                     and

        Eutrophication Survey Branch
 Corvallis Environmental  Research Laboratory
              Corvallis,  Oregon
            Working Paper No. 532
    OFFICE OF RESEARCH AND DEVELOPMENT
   U.S.  ENVIRONMENTAL PROTECTION AGENCY

                March 1977

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                               CONTENTS

                                                       Page
Foreword                                                ii
List of Louisiana Study Lakes                           iv
Lake and Drainage Area Map                               v
Sections
  I.  Introduction                                       1
 II.  Conclusions                                        1
III.  Lake Characteristics                               3
 IV.  Lake Water Quality Summary                         4
  V.  Literature Reviewed                                9
 VI.  Appendices                                        10

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                                  11
                               FOREWORD
     The National Eutrophicatlon 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,  concen-
trations, 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 nonpoint source pollution abatement in lake water-
sheds.

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
watershed 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)L 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 condition
are being made to advance the rationale and data base for refine-
ment of nutrient water quality criteria for the Nation's  freshwater
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 the U.S. Environmental  Protection
Agency and to augment plans implementation by the states.

ACKNOWLEDGMENTS

     The staff of the National Eutrophication Survey (Office of
Research and Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the Louisiana Wild Life and
Fisheries Commission, Division of Water Pollution Control for
professional involvement, to the Louisiana National Guard for
conducting the tributary sampling phase of the Survey, and to
those Louisiana wastewater treatment plant operators who  pro-
vided effluent samples and flow data.

     Robert A. Lafleur, Chief; J. Dale Givens, Assistant  Chief;
Lewis R. Still, Biologist; Louis Johnson, Biologist; Lee  Cau-
barreaux, Biologist; barrel 1 Reed, Engineer; Dempsey Alford,
Biologist; and Elwood Goodwin, Water Quality Control Technician,
all of the Louisiana Wild Life and Fisheries Commission,  Division
of Water Pollution Control reviewed the preliminary reports and
provided critiques most useful in the preparation of this
Working Paper Series.

     Major General O'Neil Daigle, Jr., the Adjutant General of
Louisiana, and Project Officer Colonel Lawrence P. Dupre, who
directed the volunteer efforts of the Louisiana National  Guards-
men, are also gratefully acknowledged for their assistance to
the Survey.

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                                  IV
                    NATIONAL EUTROPHICATION SURVEY
                              STUDY LAKES
                          STATE OF LOUISIANA
LAKE NAME
Anacoco Lake
Lake Bistineau
Black Bayou
Black Lake
Bruin Lake
Bundicks Lake
Caddo Lake

Cocodrie Lake
Cocodrie Lake  (Lower)
Concordia Lake
Cotile Lake
Cross Lake
D'Arbonne Lake
False River Lake
Indian Creek Reservoir
Saline Lake
Turkey Creek Lake
Lake Vernon
Lake Verret
  PARISH
Vernon
Bienville, Webster
Caddo
Natchitoches and Red River
Tensas
Beauregard
Caddo (Menon and Harrison
  in Texas)
Concordia
Rapides
Concordia
Rapides
Caddo
Union
Pointe Coupee
Rapides
LaSalle
Franklin
Vernon
Assumption

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-31'58
              Map Location
-arse'


0
i
0
BRUIN LAKE
X Lake Sampling Site
1 ? ? 1 Km.
1c i 2 Mi-
Scale

-------
                    REPORT  ON  BRUIN  LAKE,  LOUISIANA

                            STORE!  NO.  2202


I.    INTRODUCTION

          Bruin Lake was included in the National Eutrophication Survey

     (NES) as a water body of  interest to the Louisiana Stream Control

     Commission and Louisiana  Wild Life and Fisheries Commission.   Tri-

     butaries and nutrient sources were not sampled, and this report

     relates only to the data  obtained from lake sampling.

II.   CONCLUSIONS

     A.  Trophic Condition:*
                                                 \
               Bruin Lake is classified as eutrophic i.e.,  nutrient

          rich and highly productive based upon Survey data.   Whether

          such nutrient enrichment is to be considered beneficial  or

          deleterious is determined by its actual impact upon designated

          beneficial water uses of each lake.

               Potential for primary production as measured by algal assay

          control yield was high, and Secchi  disc visibility was low.

          Dissolved oxygen levels were depleted below 9 meters during

          summer sampling at Station 01.  Chlorophyll a^ levels ranged

          from 10.7 yg/1 in the spring to 22.9 yg/1  in the  summer with  a

          mean of 16.4 yg/1.



     *See Appendix C.

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          Of the 19 Louisiana lakes sampled by NES in 1974,  11  had
     higher median total  phosphorus values, 9 had higher median
     orthophosphorus, and only 2 had higher medial total inorganic
     nitrogen levels.
B.   Rate-Limiting Nutrient:
          Spring algal assay results suggest that Bruin Lake was
     nearly colimited by available phosphorus and nitrogen levels.
     Spikes with phosphorus or nitrogen alone resulted in increases
     in assay yield, and maximum response was achieved with  the
     simultaneous addition of both nutrients.  The lake ratios  of
     inorganic nitrogen to orthophosphorus (N/P) suggest phosphorus
     limitation in spring and fall, and nitrogen limitation  during
     the summer.

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III.  LAKE CHARACTERISTICS

     A.    Lake Morphometry:*
                                     2
          A.    Surface area:  9.48 km .
          B.    Mean depth:   9.1  meters.
          C.    Maximum depth:   16.8 meters.
          D.    Volume:  86.177 x 106 m3.

     B.    Precipitation:

          A.    Year of sampling:  155.8 cm.
          B.    Mean annual:   127.5 cm.
     *Provided by the State of Louisiana.

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IV.   LAKE WATER QUALITY SUMMARY
          Bruin Lake was sampled three times  during  the open-water
     season of 1974 by means of a pontoon-equipped Huey helicopter.
     Each time, samples for physical  and chemical parameters were
     collected from two stations on the lake  and  from one  or more
     depths at each station (see map, page v).  During each visit,
     depth-integrated samples were collected  from each station  for
     chlorophyll a_ analysis and phytoplankton identification and
     enumeration.  During the first and last  visits, 18.9-liter
     depth-integrated samples were composited for algal assays.  Maxi-
     mum depths sampled were 11.6 meters at Station  01 and 9.1  meters
     at Station 02.  For a more detailed explanation of NES methods,
     see NES Working Paper No. 175.
          The results obtained are presented  in full in Appendix B  and
     are summarized in IV-A for waters at the surface and  at the maxi-
     mum depth for each site.  Results of the phytoplankton counts  and
     chlorophyll a_ determinations are included in IV-B.  Results of the
     limiting nutrient study are presented in IV-C.

-------
      LAKE
STCHtT CO^E £202
                    PHYSICAL AND CHEMICAL CHARACTERISTICS

(   3/19/74 )                         (   5/30/74 )
                                                                                                          (  11/11/74 I
PARA^ETEH
O.-l.S M DEPTH
MA* DE°TH»«
DISSOLVED o*Y
4
2

4
2
(MG/L)
4
2

4
*

4
2

4
2
7.5- 8.0
7.0- 7.1

33.- 95.
84.- «5.

O.U35-0.040
0.066-0.074

0.010-0.012
0.024-0.036

0.090-0.160
0.220-0.230

0.04Q-0.100
0.240-0.300

0.500-0.600
0.700-0.700
7.7
7.0

69.
as.

0.031*
0.070

0.011
0.030

0.126
0.225

0.065
0.270

0.550
0.700
0.0-
9.1-

0.0-
9.1-

0.0-
9.1-

0.0-
9.1-

0.0-
9.1-

0.0-
9.1-

0.0-
9.1-
1.5
11.3

1.5
11.3

1.5
11.3

1.5
11.3

1.0
11.3

1.5
11.3

1 .5
11.3
4
2

4
2

4
2

4
2

4
?

4
?

4
P
8.1- 8.8
7.3- 7.4

9n.- 92.
91.- 93.

0.034-0.050
0.262-0.288

0.005-0.011
0.082-0.097

0. 060-0. OfcO
0.100-0.100

0. 0«sO-0. 060
0.460-0.610

0. 500-0. HOO
0.800-1.000
8.5
7.3

91.
92.

0.041
0.275

0.007
0.089

0.060
0.100

0.060
0.535

0.650
0.900
0.0-
7.6-

0.0-
7.6-

0.0-
7.6-

0.0-
7.6-

0.0-
7.6-

0.0-
7.6-

0.0-
7.6-
1.5
11.6

1.5
11.6

1.5
11.6

1.5
11.6

1.5
11.6

1.5
11.6

1.5
11.6
4
2

4
2

<»
*

4
2

4
2

4
'
7.5- 7.5
7.2- 7.6

94.- 95.
93.- 96.

0.057-0.06?
0.065-0.085

0.005-0.013
0.004-0.006

0.060-0.070
0.060-0.070

0.180-0.190
0.1«0-0.230

O.bOO-0.900
0.800-0.900
7.5
7.4

94.
95.

0.061
0.075

0.006
O.OOS

0.06S
0.065

0.190
0.205

O.H50
0.850
0.0-
8.2-

0.0-
8.2-

0.0-
8.2-

0.0-
d.2-

0.0-
d.2-

0.0-
8.2-

0.0-
8.2-
1.5
9.*

1.5
9.4

1.5
9.4

1.5
9.4

l.s
9.4

1.5
9.4

1.5
9.4
SECCH1 DISC
                           1.3-  1.5
       1 .4
1.1-  1.2
1.2
1.2-  1.2
                                                                                                                 1.2
                         » N = NO. OK SAMPLtS
                         »» MAXIMUM DEPTH SAMPLED  AT EACH  SITE
                         «»» S = NO. OK SITtS SAMPLED ON Thl« DATE

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B.   Biological Characteristics:

     1.    Phytoplankton -
          Sampling
          Date

          03/19/74
          05/30/74
          11/11/74
Dominant
Genera

1.  Melosira
2.  Cryptomonas
3.  Dactylococcopsis
4.  Ankistrodesmus
5.  Micractinium

     Other genera

          Total

1.  Dactylococcopsis
2.  Nitzschia
3.  Anabaenopsis
4.  Oscillatoria
5.  Melosira

     Other genera

          Total
                              Other genera

                                   Total
Algal
Units
per ml

 1,189
   743
   520
   297
   297

 1,191

 4,237

24,829
13,770
 3,882
 2,271
 1,977

 5,640

52,369
1.
2.
3.
4.
5.
Dactyl ococcopsis
Oscillatoria
Flagellates
Nitzschia
Cryptomonas
4,945
2,448
832
735
685
                          4,064

                         13,709

-------
Sampling
Date
03/19/74
05/30/74
11/11/74
Station
Number
01
02
01
02
01
02
    2.    Chlorophyll  a^ -

                                                 Chlorophyll £
                                                 (uq/D

                                                     13.5
                                                     10.7

                                                     22.9
                                                     20.9

                                                     13.4
                                                     16.7

C.  Limiting Nutrient Study:

   1.    Autoclaved,  filtered, and nutrient spiked -


         Spike(mg/1)

         Control
         0.05 P
         0.05 P + 1.0 N
         1.00 N

   2.    Discussion -

              The control  yield of the assay alga, Selenastrum capricor-

         nutum, indicates  that the potential  for primary production  in

         Bruin Lake was high  at the time of spring sample collection.

         Spikes with  phosphorus or nitrogen alone resulted in  slight

         increased yield,  suggesting near-col imitation by the  two  nutrients.

         Maximum growth response was achieved with the simultaneous  addi-

         tion of both phosphorus and nitrogen.

              It should be noted that significant chemical  changes took

         place in Louisiana lake samples between collection and algal assay.
Ortho P
Conc.(mg/l)
0.020
0.070
0.070
0.020
Inorganic N
Conc.(mg/l)
0.222
0.222
1.222
1.222
Maximum Yield
(mg/l-dry wt. )
3.6
4.9
11.7
4.3

-------
The assay data should be considered in this context and
until such differences are resolved, used with caution for
any prediction of actual lake conditions.  Such chemical
changes are likely to alter the assay control yield as
well as modifying the N/P ratios.
     The autumn algal assay results have not been included
in this report as the substantial changes in nutrient
levels have removed their information value.
     The N/P ratios in the spring and fall lake chemistry
samples were respectively 16/1 and 33/1, indicating phos-
phorus limitation at those times.  The N/P ratio was 7/1
for the summer lake samples, indicating nitrogen limitation
(an N/P ratio of 14/1 or greater generally reflects phos-
phorus limitation).

-------
V.     LITERATURE REVIEWED

       U.S. Environmental Protection Agency.  1975.  National
         Eutrophication Survey Methods 1973-1976.  Working Paper
         No. 175.  National Environmental Research Center, Las
         Vegas, Nevada, and Pacific Northwest Environmental
         Research Laboratory, Corvallis, Oregon.

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                                10
VI.  APPENDICES
                             APPENDIX A



                         CONVERSION FACTORS

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                CONVERSION FACTORS





Hectares x 2.471 = acres



Kilometers x 0.6214 = miles



Meters x 3.281 = feet



Cubic meters x 8.107 x 10"4 = acre/feet



Square kilometers x 0.3861 = square miles



Cubic meters/sec x 35.315 = cubic feet/sec



Centimeters x 0.3937 = inches



Kilograms x 2.205 = pounds



Kilograms/square kilometer x 5.711 = Ibs/square mile

-------
        APPENDIX B



PHYSICAL AND CHEMICAL DATA

-------
S, T 0 -; t T J t. T * j r. v i L J 4 T r.
NATL f uT-O^-IC JT 10% S
                       7 r / 1 2 / 1 1
                                                                    220201
                                                                   31  b *  * 0 , G 091 1 •=
                                                                   15 * U 1 '\  L A ^ E.
                                                                   2?       LOUISIANA
                                                                   lid-
                                                                                            FEtT
F '- 0 •'
TQ
74/03/19




74/0^/30





74/11/11



riv
OF
10
10
10
10
10
13
13
13
13
13
13
15
15
Ib
15
t
40
40
40
40
40
15
15
15
15
15
15
15
15
15
15
FEET
00 00
0005
0015
0025
0037
0000
000^
PO 15
0020
0030
0038
0000
0005
0020
0031
o n















0 1 0
EK
18.0
18.0
17.9
17.6
15.4
27.7
27.7
27.3
26.9
21.2
19.5
19.5
19.4
19.1
19.0
00665
UATE
ffHJV
TO
74/03/19




74/05/30





V4/11/H




TIwE
OF
DAY
10
10
10
10
10
13
13
13
13
13
1 J
15
15
15
15.
15


40
40
40
40
40
15
15
15
15
15
IS
15
15
15
15
15
DEPTH

FEET
0000
0005
0015
0025
0037
0000
0005
0015
0020
0030
003*
oooy
0002
000 =
0020
0031
PriOS-TOT


MG/L P
0
0
0
0
0
0
0
(1
0
I)
0
0

0
1)
0
.040
.035
.042
.048
.066
.040
.034
.046
.139
.147
.2«8
.062

.061
.0^9
.Obb
0 0 3 0 0 <;• 3 n 7 7
'JO TrtaMSP C;
StCCHl F
Mfj/L iNC^t.S "

9.
8.
8.
2.

7.
7.
5.
0.
0.
7.
6.
6.
5.
32217
60
0
6
U
8
44
2
0
0
0
0
4 4a
6
4
0
OOOJl
0 0 0 •» 4
i ELD
144
150
151
149
146
225
213
209
200
180
183
I6t)
170
168
169

CHLKPHYL INCDT LT
A
UG/L
13.




22.





13.




^FMN IMG
PEKCtr-lT
5




9





4
1 .1)





















00400
'->!-!

'Si'
b.uo
7.90
7.90
7.50
7.00
8.80
8.80
b.6C
7.45
7.30
7.30
7.5J
7.52
7.*»0
7.24
00410
T AL"
CACO }
MG/L
**
95
94
83
84
90
90
90
42
92
91
*4
95
95
96
00610
1^.1 3-N
TOTAL
MR/L
0.040
0.040
0.050
0.230
0.300
0.0«0
0.060
0.040
0.230
0.210
0.610
0.190
0.190
o.iao
0.230
U"r» ^
TOT <.jti_
N
MP/L
0.600
O.fOO
o . 4 u o
0.600
0.700
0.800
O.iOO
o . r> 0 o
0.500
0.70U
1.000
0.900
0 . « tl 0
0.800
0.900
006 -tO
••JOPS.N03
'--TOTAL
"K/L
0.100
0.090
0.120
o. i yo
0.220
0.080
0.060
n . 0 3 0
0.030
0.030
0.100
0.060
0.060
0.060
0.060
                                                                                                                   00^71
                                                                                                                  10S-OIS
                                                                                                                    0.012
                                                                                                                    0.011
                                                                                                                    0.014
                                                                                                                    0.025
                                                                                                                    0.036
                                                                                                                    0.-006
                                                                                                                    0.005
                                                                                                                    0.007
                                                                                                                    0.065
                                                                                                                    0.057
                                                                                                                    O.On?
                                                                                                                    0.007
                                                                                                                    0.013
                                                                                                                    0.013
                                                                                                                    0.006

-------
3TC.-tT  -ET-Ir.jAL  -J^TK  7t-
SftTL  El.'T-.O-'-'ICiTIO1  SU-VtY
£ r1 H -!_ 5 S  V r £ " ^
                                                                              ~n S'-  ?o.o  o-u

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F-O--'
TO
74/03/1^



74/05/30



74/11/11




TI •:
OF
G^Y
11
11
11
1 1
13
13
13
13
15
15
15
15

t


on
on
00
00
5S
55
55
5S
40
40
4U
40

DEJT-

FEET
n 0 0 0
000 =
00 I'-.
00 jn
000 0
0005
0015
1025
0 C 0 0
00u5
OOl^
0027
0 1
«aT
Tt
Ct












Hi 0
r_ *v
v P
NT
17.4
17.?
16.8
15.3
27.2
27.0
25.6
21.3
19.2
19.1
19.1
IB. 9
006&5
DATE
FRijM
TO
74/U3/19



74/05/30



74/11/11



TIME
OF
liAY
11
11
11
11
13
13
13
13
15
15
15
15


00
oo
00
00
55
55
55
55
40
40
40
40
OEPTr.

FEET
0001
OOO1^
0015
0030
0000
OOP?
OOlf-
00^5
0000
OOO^i
001?
002?
PHOS-TOT


MG/L P
0
0
0
0
0
0
0
It
0
0
0
0
.039
.039
.041
.074
.042
.050
.056
.262
.061
.057
.112
.065
f. T « n ij
DO

MG/L

7.
6.
3.

5.
3.
?.
7.
b.
6.
6.
32217
u n r, y 7
T t- 4 \ -. J
StCCnl
TNOe S
50
2
2
4
48
8
o
0
2 <*8
d
8
8
00031
UOO-4
c^ouc TVY
FIELD
M J C^l"'Mi-lO
150
150
U9
145
213
209
?05
204
167
167
167
165

CHLPPMYL INCDT LT
A
UG/L
10.



20.



16.



PENNING
PEHCE.MT
7



9



7

















    4

00400
 t>ri

 Si'
                                                                                                       21112V
                                                                                                     0036 FttT
                                                                                                                   i/t-i"
                                                                                      0 0 •» 1 0
                                                                                                  OOblo       00»^
                                                                                                 NH3-N     TOT
                                                                                                 TOTAL         '
  006.10
N02S.N03
  OOoM
j-,OS-0
 OrVT-lO
                                                                                                                           G/L
150
150
1<»9
145
213
209
?05
204
167
167
167
165
7.50
7.50
7.40 .
7.10
«.
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         APPENDIX C

PARAMETRIC RANKINGS OF LAKES
   SAMPLED BY NES IN 1974

      STATE OF LOUISIANA

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LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE  LAKE NAME

2201  ANACOCO LAKE

2202  BRUIN LAKE

2203  LAKE BISTINE4U

2204  BLACK BAYOU

2205  Sii.NDICK LAKE

2207  COCODPIE LAKE

220S  COTILE LAKE

2209  CONCORDIA LAKE

2210  CROSS LAKE

2211  D'ARBONNE LAKE

2212  FALSE RIVER LAKE

2213  INDIAN CREEK

2214  SALINE LAKE

2215  TURKEY CREEK LAKE

2216  LAKE VERRET

2217  LAKE VERNON

2219  BLACK LAKE

2220  COCODRIE

4807  CAOOO LAKE
MEDIAN
TOTAL P
O.P31
0.057
O.n61
0.046
0.157
0.090
0.037
0.076
0.057
0.038
0.082
0.031
0.111
0.176
0.163
0.018
0.077
0.106
0.049
MEDIAN
INORG N
0.080
0.250
0.100
0.090
0.135
0.400
0.100
0.080
0.080
0.100
0.130
0.150
0.350
0.170
0.100
0.120
0.150
0.050
0.070
500-
MEAN SEC
455.833
450.333
458.000
453.417
469.667
479.000
442.333
468.333
475.250
458.250
442.500
458.333
493.000
477.833
481.428
436.667
454.000
478.333
463.562
MEAN
CHLOKA
8.700
16.350
12.933
17.818
20.467
35.300
12.650
32.950
38.385
6.800
24.550
21.467
15.333
21.967
62.028
4.900
12.733
33.433
20.125
15-
MIN 00
10.4QO
15.000
13.200
12.200
10.600
7.700
14.000
14.800
11.400
13.200
14.900
14.800
9.600
14.600
12.000
14.400
11.600
11.800
10.000
MEDIAN
OISS OPTHO P
0.007
0.012
0.013
0.009
0.073
0.026
0.011
0.009
0.010
0.011
0.023
0.010
0.025
0.033
0.056
0.007
0.015
0.014
0.008

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PERCENT OF LAKES wTTK  HIGHER  VALUES  (NUM9FR  OF  I.AKES WITH HIGnER VALUES)
LAKE
CODE
2201
2202
2203
2204
2205
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2219
2220
4807
LAKE NAME
ANACOCO LAKE
8RUIN LAKE
LAKE BISTINEAU
BLACK BAYOU
BL'NOICK LAKE
COCODRIE LAKE
COTILE LAKE
CONCOWDIA LAKE
CROSS LAKE
O'ARBONNE LAKE
FALSE RIVER LAKE
INDIAN CREEK
SALINE LAKE
TURKEY CREEK LAKE
LAKE VERRET
LAKE VERNON
BLACK LAKE
COCOORIE
CADOO LAKE
MEDIAN
TOTAL P
92
61
50
72
11
28
83
44
56
78
33
92
17
0
6
100
39
22
67
( 1
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