U.S. ENVIRONMENTAL PROTECTION AGENCY
           NATIONAL EUTROPHICATION SURVEY
                    WORKING PAPER SERIES
                                          REPORT
                                           ON
                                       BUNDICK LAKE
                                      BEAUREGARD PARISH
                                         LOUISIANA
                                       EPA REGION VI
                                    WORKING PAPER No, 533
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
                             and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
 699-440

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                                  REPORT
                                    ON
                               BUNDICK LAKE
                             BEAUREGARD PARISH
                                 LOUISIANA
                               EPA REGION VI
                           WORKING PAPER No, 533
        WITH THE COOPERATION OF THE
LOUISIANA WILD LIFE AND FISHERIES COMMISSION
                  AND THE
         LOUISIANA NATIONAL GUARD
                MARCH, 1977

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           REPORT ON BUNDICK LAKE

        BEAUREGARD PARISH,  LOUISIANA

                EPA REGION  VI


                     by

       National  Eutrophication Survey

        Water and Land Quality Branch
       Monitoring Operations Division
Environmental Monitoring  &  Support Laboratory
              Las Vegas,  Nevada

                     and

           Special Studies  Branch
 Corvallis Environmental  Research Laboratory
              Corvallis,  Oregon
            Working Paper No.  533
     OFFICE OF RESEARCH AND DEVELOPMENT
    U.S.  ENVIRONMENTAL PROTECTION AGENCY

                 March 1977

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                               CONTENTS

                                                       Page
Foreword                                                i i
List of Louisiana Study Lakes                           iv
Lake and Drainage Area Map                               v
Sections
  I. Conclusions                                         1
 II. Lake and Drainage Basin Characteristics             4
III. Lake Water Quality Summary                          6
 IV. Nutrient Loadings                                  12
  V. Literature Reviewed                                18
 VI. Appendices                                         19

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                                  ii


                               FOREWORD
     The National Eutrophication Survey was Initiated  in  1972  in
response to an Administration commitment to investigate the  nation-
wide threat of accelerated eutrophication to freshwater lakes  and
reservoirs.

OBJECTIVES

     The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources,  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)L clean lakes [§314(a,b)], and water quality  monitoring
[§106  and §305(b)] activities mandated by the Federal  Water
Pollution Control Act Amendments of 1972.

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                                    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, nultivariate 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; Darrell 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 Q'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
Bundick 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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    BUNDICK LAKE
   Tributary Sampling  Site
X  Lake Sampling Site
   Sewage Treatment Facility
   Drainage Area Boundary
                      ?Mi.
                Map Location

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                  REPORT ON  BUNDICK LAKE,  LOUISIANA



                            STORE! NO.  2205







I.    CONCLUSIONS



     A.    Trophic Condition:*



               Survey data  indicate that  Bundick Lake  is  eutrophic,



          i.e., nutrient  rich and  highly  productive.   Whether  such



          nutrient enrichment is to be  considered beneficial or



          deleterious is  determined by  its actual  or potential im-



          pact upon designated beneficial  water uses of each lake.



               Of the 19  Louisiana lakes  sampled in 1974,  only 2



          had higher median  total  phosphorus,  6 had higher median



          inorganic nitrogen, and  none  had higher median  orthopho-



          phorus levels than Bundick Lake.  Low Secchi disc visi-



          bility and high potential  for primary productivity as



          measured by algal  assay  control  yields were  noted.   Chloro-



          phyll a^values  ranged from 6.1  yg/1  in the fall  to 38.5 yg/1



          in the summer,  with a mean of 20.5 yg/1.



               Field limnologists  reported patches of  floating macro-



          phytes and some mats of  phytoplankton along  the  shoreline



          areas of the lake  during summer and  autumn sampling.






     *See Appendix E.

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B.   Rate-Limiting Nutrient:
          Algal assay results indicate that Bundick Lake was limited by
     available nitrogen.  Spikes with nitrogen alone, or nitrogen and
     phosphorus simultaneously resulted in increases in assay yield.
     Addition of phosphorus alone did not stimulate a growth response.
     The ratio of available nitrogen to orthophosphorus (N/P) in sam-
     pled waters substantiate nitrogen limitation.
C.   Nutrient Controllability:
     1.   Point sources -
               Point sources contributed 27.0% of the total  phosphorus
          loading reaching Bundick Lake.  South Fort Polk contributed
          16.8% and the city of De Ridder contributed 10.2%.  The
          present loading of 7.50 g/m^/yr is six times that proposed
          by Vollenweider (1975) as "eutrophic" for a lake of such
          volume and retention time.  However, Vollenweider's model
          may not apply to water bodies with short hydraulic retention
          times and the hydraulic retention time of Bundick Lake is  only
          15 days.
     2.   Nonpoint sources -
               The mean annual phosphorus load from measured tributaries
          amounted to 61.5% of the load to Bundick Lake.  Bundick Creek
          contributed 46.1% while ungaged tributaries contributed 11.3%
          of the  load.  However, loading calculations for Bundick Lake

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yield a net export of nitrogen indicating sampling was not
adequate to accurately depict actual  nitrogen loading and
export rates.
     In general, few lakes are nitrogen limited as a result
of low nitrogen.  Rather, excessive phosphorus levels shift
limitations to nitrogen or other factors.  Regardless of the
primary nutrient limitation suggested by either algal assay
or nutrient ratios, the most feasible approach to nutrient
control, if desirable, is through available phosphorus con-
trol technology and subsequent establishment of phosphorus
limitation within the water body.

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II.   LAKE AND DRAINAGE BASIN CHARACTERISTICS

          Lake and drainage basin characteristics are itemized below.

     Lake surface area and mean depth were provided by the State of

     Louisiana.  Maximum depth was obtained from maps provided by the

     Louisiana Stream Control Commission.  Tributary flow data were

     provided by the Louisiana District Office of the U.S. Geological

     Survey (USGS).  Mean hydraulic retention time was obtained by

     dividing the lake volume by the mean flow of the outlet.   Precipi-

     tation values are estimated by methods as outlined in National

     Eutrophication Survey (NES) Working Paper No. 175.  A table of

     metric/English conversions is included as Appendix A.

     A.   Lake Morphometry:
                                     2
          1.   Surface area:  7.07 km .
          2.   Mean depth:  1.6 meters.
          3.   Maximum depth:  7.6 meters.
          4.   Volume:  11.348 x 106 m3.
          5.   Mean hydraulic retention time:  15 days.

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B.   Tributary and Outlet:
     (See Appendix B for flow data)

     1.    Tributaries -

                                             Drainage       Mean  flow
          Name                               area (km?)      (m3/sec)

          A-2 Bundick Creek                   310.8           4.15
          B-l Palmetto Creek                   45.6           0.61
          C-l Deer Creek                       44.5           0.59
          D-l Dry Creek                        11.3           0.15

          Minor tributaries and
          immediate drainage -                127.6           1.80

                    Totals                     539.8           7.30

     2.    Outlet - A-l Bundick Creek          546.5           8.98

C.   Precipitation:

     1.    Year of sampling:  180.0 cm.
     2.    Mean annual:  150.0 cm.

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III.  LAKE WATER QUALITY SUMMARY
          Bundick 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 enu-
     meration.  During the first and last, 18.9-liter depth-integrated
     samples were composited for algal assays.  Maximum depths sam-
     pled were 1.5 meters at Station 01 and 0.6 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 C
     and are summarized in III-A for waters at the surface and at the
     maximum depth for each site.  Results of the phytoplankton counts
     and chlorophyll a^ determinations are included in III-B.  Results
     of the limiting nutrient study are presented in III-C.

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3TO-ET CODE 2''
PHYSICAL A\!D CnEMCAL CH

                 (  5/30/74  )
                                                                                                            (  11/12/74
p A * A y. E T t K IM *
TtMPtPATUnt «DER CfJT)
O.-l. ^ M DEPTi- 3
MAX DEPTH** 2
DISSOLVED 0>.Y(iEN (MG/L)
o.-i. s M fiE^T* a
MAX DEPTH** 2
CONDUCTIVITY (UMHOs)
O.-l. 5 M DEPTH 3
MAX DEPTH** t
PH (STANDAPU UNITS)
O.-l. 5 M OEPTr. 3
MAX DEPTH-** 2
TOTAL ALKALINITY IM^/LI
O.-l. 5 M uEPT-i 3
MAX DEPTH** 2
TOTAL P (MG/L)
O.-l .5 M DEPTH 3
MAX DEPTH** 2
DISSOLVED 'Jr-ThO P (MG/L)
O.-l. 5 M OEPTH 3
MAX DEPTH** 2
N02»N03 (MG/L)
O.-l. 5 M Ot->TH j
MrtX 0£FTH<»* 2
AMMONIA 
O.-K1? M OEHTH 3
MAX DEPTH** 2
KJELDAHL M (MG/L)
n.-l.SMUtf-TH 3
MAX uEPTrt** 2
MAN«

21.6- 24.2
21 .H- 24.2

7.0- 8.0
7.0- 8.0

50.- 125.
tin.- 125.

6.4- 6.5
6.4- 6.5

10.- 1C.
10.- 10.

0. 094-0. 18b
0. 102-0. 1«5

0.035-0.071
0.036-0.071

0.120-0.250
0.120-n.?50

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0.050-0. 100

0.700-n.HOO
0.700-0. HOO
= ?
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7.b

50.
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6.5

10.
10.

0.102
0.143

0.036
0.053

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O.IBb

0.060
0.075

0.700
0.75U
Max
DtP fn
(METE

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0.0-

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ftS)

0.6
0.6

0.6
0.6

0.6
0.6

0.6
0.6

0.6
0.6

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0.6
0.6

0.6
0.6

0.6
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0.6
0.6
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4
2

2
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27.b-
27.5-

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4.4-

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6.6-
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20.-
21.-

0.116-0
0.122-0

0.045-0
0.047-0

0.020-0
0.020-0

0.030-0
0.030-0

0.600-0
U.600-0

28.7
26.7

5.6
5.6

75.
75.

7.0
6.6

25.
24.

.212
.212

. US>4
.094

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.«00
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= 2
Mtoi AN

27.3
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3.0
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67.
67.

6.8
6.7

23.
23.

0.15V
0.167

0.064
0.070

0.041
0.040

0.040
0.03b

0.600
0.600
(METERS) N»

0.0-
O.b-

0.6-
0.6-

0.0-
0.6-

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0.6-

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0.6-

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O.M-

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0.6
0.6

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0.6
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0.075-0
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0.040-0
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0.700-0
0.700-0

17.2
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8.2
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6.2
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11.
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0.255
0.302

0.065
0.134

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0.060
0.090

0.800
0.750
MAX
DEPTH
(METERS)

0.0-
0.0-

0.0-
0.0-

0.0-
0.0-

0.0-
0.0-

0.0-
0.0-

0.0-
0.0-

0.0-
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0.0-

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l.b
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SECCnl DISC  («ETE-
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B.   Biological Characteristics:
     1.   Phytoplankton -
Sampling
Date
03/20/74
05/30/74
11/12/74
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Melosira
Cr.yptomonas
Trachelomonas
Aphanocapsa
Crucigenia
Other genera
Total
Melosira
Kirchneriella
Chlamydomonas
Cryptomonas
Microcystis
Other genera
Total
Dactyl ococcopsis
Melosira
Cyclotella
Scenedesmus
Kirchneriella
Other genera
Algal
Units
per ml
8,775
1,051
526
283
283
1,982
12,900
3,719
1,438
967
694
545
4,810
12,173
533
374
373
373
320
959
                                   Total
2,932

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2.   Chlorophyll a^ -
Sampling
Date
03/20/74
05/30/74
11/12/74
Station
Number
01
02
01
02
01
02
Chlorophyll a
(vig/1)
14.1
21.1
26.9
38.5
6.1
16.1

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                                  10
C.   Limiting Nutrient Study:

     1.   Autoclaved, filtered, and nutrient spiked -

          a.  03/20/74


          Spike(mg/l)

          Control
          0.05 P
          0.05 P + 1.0 N
          1.00 N

          b.  11/12/74


          Spike(mg/1)

          Control
          0.05 P
          0.05 P + 1.0 N
          1.00 N
Ortho P
Cone. (mg/1)
0.085
0.135
0.135
0.085
Inorganic N
Cone. (mg/1 )
0.335
0.335
1.335
1.335
Maximum yield
(mg/1 -dry wt. )
7.3
7.7
23.0
17.5
Ortho P
Cone (mg/1)

  0.141
  0.191
  0.191
  0.141
Inorganic N
Cone.(mg/1)

  0.191
  0.191
  1.191
  1.191
Maximum yield
(mg/1-dry wt.)

     8.0
     7.4
    28.3
    28.3
     2.   Discussion -

               The control yields of the assay alga, Selenastrum capricor-

          nutum, indicate that the potential for primary productivity in

          Bundick Lake was high during the spring and fall  samplings.  The

          substantial increases in yield in each assay with the addition of

          nitrogen, and the lack of response to the addition of phosphorus

          indicate nitrogen limitation.  In the spring assay, the simultaneous

          addition of nitrogen and phosphorus spikes resulted in maximum yield.

               The N/P ratio in the field was 5/1 in the spring, 1/1  in the

          summer, and 2/1 in the fall, suggesting that the  lake was nitrogen

          limited at those times (an N/P ratio of 14/1 or greater generally

          reflects phosphorus limitation).

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                        n
     It should be noted that significant chemical  changes
took place in Louisiana lake samples between the time of
sample collection and assay analysis.   The assay data
should be considered in this context and until  such differ-
ences are resolved, used with caution for any predictions
of actual lake conditions.   Such chemical changes are likely
to alter the assay control  yield as well as modifying the
N/P ratio.

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                                     12
IV.   NUTRIENT LOADINGS
     (See Appendix D for data)
          For the determination of nutrient loadings,  the  Louisiana
     National Guard collected monthly near-surface grab samples  from
     each of the tributary sites indicated on the map  (page  v),  ex-
     cept for the high runoff months of February, March, and April
     when two samples were collected.  Sampling was begun  in June
     1974, and was completed in May 1975.
          Through an interagency agreement, stream flow estimates  for
     the year of sampling and a "normalized" or average year were  pro-
     vided by the Louisiana District Office of the USGS for  the  tribu-
     tary sites nearest the lake.
          In this report, nutrient loads for sampled tributaries,  except
     Dry Creek, Station D-l, were determined by using  a modification  of
     the USGS computer program for calculating stream  loadings.   Nutrient
     loads indicated for tributaries are those measured minus known  point
     source loads, if any.
          Nutrient loadings for Dry Creek, Station D-l, and  unsampled
     "minor tributaries and immediate drainage" ("ZZ"  of USGS) were
                                                                P
     estimated by using the mean annual nutrient loads, in kg/km /yr,  in
     Deer Creek at Station C-l, and multiplying the means  by the appro-
     priate area in km^.
          The operators of the North and South Fort Polk and De  Ridder
     wastewater treatment plants provided monthly effluent samples and
     corresponding flow data.

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                                    13
A.   Waste Sources:

     1.   Known municipal -


     Name

     South Fort Polk

     De Ridder
Population               Mean Flow     Receiving
Served*      Treatment*  (m^/d x IP3)  Water*
  10,110

   8,800
     2.    Known industrial  - None
Trickling
filter
Trickling
filter
5.284       Bundick Creek

3.785       Hickory Creek/
            Flat Creek
     *Sewage treatment  plant  questionnaires.

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                                    14
B.   Annual Total Phosphorus Loading - Average Year:

     1.   Inputs -
                                                            % of
          Source                              kg P/yr        total

          a.   Tributaries  (nonpoint load) -

               A-2  Bundick  Creek              24,440         46.1
               B-l  Palmetto Creek              5,570         10.5
               C-l  Deer  Creek                  2,085          3.9
               D-l  Dry Creek                     530          1.0

           b.   Minor tributaries and immediate
               drainage  (nonpoint  load) -      5,995         11.3

           c.   Known municipal  STP's -

               South Fort Polk                 3,920         16.8
               De Ridder                      5,355         10.2.

           d.   Septic tanks* -                    <5         <0.1

           e.   Known industrial -  None

           f.   Direct precipitation** -          125          0.2

                          Totals                53,020        100.0

      2.    Output -  A-l Bundick  Creek          31,130

      3.    Net annual P accummulation -         21,890
       *Estimate based  on two  lakeside  dwellings.
      **Estimated (see  NES Working  Paper  No.  175).

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                                  15
C.   Annual Total Nitrogen Loading - Average Year:

     1.   Inputs -
                                                            % of
          Source                             kg N/yr        total

          a.   Tributaries (nonpoint load) -

               A-2 Bundick Creek              121,865         48.4
               B-l Palmetto Creek              24,495          9.7
               C-l Deer Creek                  14,480          5.7
               D-l Dry Creek                   3,670          1.5

          b.   Minor tributaries and immediate
               drainage (nonpoint  load)  -      41,470         16.5

          c.   Known municipal  STP's -

               South Fort  Polk                 23,595          9.4
               De Ridder                      14,725          5.8

          d.   Septic tanks* -                    20         <0.1

          e.   Known industrial -  None

          f.   Direct precipitation** -         7,635          3.0

                          Totals             251,955         100.0

     2.    Output - A-l  Bundick  Creek         264,075

     3.    Net  annual  N export*** -             12,120
           *Estimate  based on two  lakeside dwellings.
          **Estimated (see NES Working Paper No. 175).
         ***Export  probably due to unknown sources and/or sampling error.

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                                      16
D.   Mean Annual Nonpoint Nutrient Export by Subdrainage Area:

     Tributary                          kg P/km^/yr    kg N/km2/yr

     Bundick Creek                           79            392
     Palmetto Creek*                        122            537
     Deer Creek                              47            325
     Dry Creek                               47            325
     *Background levels for this tributary probably inflated by unknown
      point sources upstream.

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                                  17
E.   Yearly Loadings:
          In the following table, the existing phosphorus  annual
     loading is compared to the relationship proposed by Vollenweider
     (1975).  Essentially, his "eutrophic" loading is that at which
     the receiving waters would become eutrophic or remain eutrophic;
     his "oligotrophic" 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 "eutrophic" and "oligotrophic".
          Note that Vollenweider's model may not apply to  lakes with
     short hydraulic retention times or in which light penetration is
     severely restricted by high concentrations of suspended solids
     in the surface waters.
                             Total  Yearly
                          Phosphorus Loading
                               (q/m2/yr)
     Estimated loading for Bundick Lake                          7.50
     Vollenweider's "eutrophic" loading                          1.22
     Vollenweider's "oligotrophic" loading                       0.61

-------
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.

     Vollenweider, R. A.  1975.  Input-Output Models With Special
       Reference to the Phosphorus Loading Concept in Limnology.
       Schweiz. Z. Hydrol.  37:53-84.

-------
                                 19





VI.  APPENDICES
                      APPENDIX A



                   CONVERSION FACTORS

-------
                CONVERSION FACTORS





Hectares x 2.471 = acres



Kilometers x 0.6214 = miles



Meters x 3.281 = feet



Cubic meters x 8.107 x 10~  = acre/feet



Square kilometers x 0.3861 = square miles



Cubic meters/sec x 35.315 - cubic feet/sec



Centimeters x 0.3937 = inches



Kilograms x 2.205 - pounds



Kilograms/square kilometer x 5.711 - Ibs/square  mile

-------
    APPENDIX B



TRIBUTARY FLOW DATA

-------
                                   TRIBUTARY FLO* INFORMATION FOR LOUISIANA
                                                                                          04/H/77
LAKE CODE 2205
                   BUNDICKS LAKE
     TOTAL DRAINAGE AKEA OF LAKE
TRIBUTARY
2205A1
            MONTH   YEAR
MEAN FLOW  DAY
FLOW  DAY
2205A2
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
74
74
74
74
74
74
74
75
75
75
75
75
74
74
74
7<«
74
74
74
75
75
75
75
75
2.265
2.010
2.067
3.370
1.501
8.014
17.840
12.403
7.249
10.364
9.401
28.175
1.291
1.138
1.175
1.917
0.850
4.559
10.137
7.051
4.134
5.890
5.352
16.027
9
7
10
8
10
12
7
13
8
8
7
2
9
7
10
8
10
12
7
13
8
8
7
2
1.784
1.501
1.3C3
5.324
1.048
16.990
43.042
27.184
5.522
4.276
2.747
122.046
1.019
0.850
0.736
2.775
0.595
9.628
25.060
15.433
3.143
2.435
1.557
69.376








23
24
21









23
24
21

                                                                   SUMMARY
                                                                              TOTAL FLOW IN  =     88.21
                                                                              TOTAL FLOW OUT =    108.14
                                                                     FLOW  DAY
FLOW
                                                                    6.626
                                                                    5.578
                                                                    6.031
                                                                    3.766
                                                                    3.171
                                                                    3.426
                                                                                                                         MEAN
22U5A1
2205A2
2205bl
2205C1
220501
2205ZZ
546.5
310.8
45.6
44.5
11.3
134.7
12. 5*
6.57
0.96
0.93
0.15
2.86
14.81
7.45
1.10
i.oa
0.15
3.23
11.30
5.64
0.82
0.79
0.15
2.44
11.92
5.21
0.76
0.74
0.15
2.27
12.63
2.61
0.37
0.37
0.15
1.13
7.67
2.35
0.34
0.34
0.15
1.02
5.10
1.70
0.25
0.24
0.15
0.74
5.<+9
1.61
0.24
0.23
0.15
0.71
4.25
2.69
0.40
0.40
0.15
1.16
3.00
1.59
0.23 .
0.23
0.15
0.68
7.04
4.b2
0.68
O.bb
0.15
2.01
11.38
d.10
1.19
1.16
0.15
3.51
8.98
4.15
0.61
0.59
0.15
1.80

-------
                                   TRIBUTARY  PLOW  INFORMATION  FUR  LOUISIANA
                                                                        G^/ll/77
LA«;E CODE 2?05
oijNDICKS LAKE
     MEAN MONTHLY FLOWS ANC JAIL* FLOWS(CMS)

TRIBUTARY   MONTH  . YE.AK    MEAN FLOW   DAY
2205C1
3205D1
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
74
7<»
74
74
74
74
74
75
75
75
75
75
74
74
74
74
74
74
74
75
75
75
75
75
74
74
74
74
74
74
74
75
75
75
75
75
                                                    FLOW   DAY
                                                  FLOW   DAY
FLOW
0.190
0.167
0.173
0.283
0.125
0.680
1.501
1.048
0.595
0.850
0.793
2.350
0.184
0.164
0.167
0.275
0.122
0.651
1.444
1.019
0.595
0.850
0.765
2.294
0.042
0.040
0.040
0.065
0.028
0.153
0.340
0.227
0.142
0.198
0.170
0.538
9
7
10
8
10
12
7
13
8
8
7
2
9
7
10
8
10
12
7
13
8
8
7
2
9
7
10
8
10
12
7
13
8
8
7
2
0.150
0.125
0.108
0.311
0.088
1.416
3.710
3.265
0.453
0.368
0.227
10.166
0.147
0.122
0.105
0.311
0.085
1.388
3.568
2.209
0.453
0.340
0.227
9.939
0.034
0.028
0.025
0.099
0.020
0.311
0.821
0.510
0.113
0.0«5
0.054
2.322








23
24
21









23
24
21









23
24
21

                                                                     0.538
                                                                     0.453
                                                                     0.510
                                                                     0.538
                                                                     0.453
                                                                     0.481
                                                                     0.113
                                                                     0.113
                                                                     0.116

-------
        APPENDIX C



PHYSICAL AND CHEMICAL DATA

-------
STORE! «ET*IEVAL  OATt  76/12/11
NATL F.JTK'QPi-iICATIO'J
EPA-LAS VEGAS
 220501
30 43 36.0
                                                                   22
     :? C-> 43.0

LOUISIANA
                                                                   HEP.Si.ciS
                                                                   3
                                                                                        0005 FEtT
DATE
FVOM
TO
74/03/20

74/05/30

74/11/12

00010
TI-'E OEi-'T-' wATt'K
OF TEMP
DAY FEET
13 45
13 45
11 00
11 00
P9 30
09 30
0000
0002
0000
000?
0000
0005
CtNT
21.8
21.8
27.5
27.5
17.2
17.1
00300 00077 OOOV4
00 TrcA JS" C.NiOUCTVY
StCChI FIELD
MG/L

7

4
a
8
I

.0

.4
.0
.2
NCHh'S MI
30

36

27

CuOivhO
50
50
59
5V
50
50
004 Ou 00»lu
"H T aLK
CACOJ
• SU
6.50
6.50
6. BO
6.60'
6.22
6.17
MG/L
lUK
IQ«,
20
21
10K
11
00610 UO^-'b On^'^0
NM3-N TOT i-.JfcL NO?f»NOJ '
TOTAL N N-TOTAL
MG/L
0.060
0.050
0.070
0.030
0.040
0.060
MG/L
0.700
0.70U
O.HOO
O.fiOO
o.aoo
0.700
MG/L
0.1PO
0.120
0.060
0.020
0.080
0.080
00671
••HOS-OIS
O^THO
Mfi/L M
0.035
0.036
0.045
0.047
0.07S
0.085
                       00665     32217     00031
  DATE   TIME DEPTH  PMOS-TUT  CHLUPHYL  INCDT LT
  FROM    OF                      A      RFMNINS
   TO    HAY  FEET    MG/L  P     UG/L    PERCENT

74/03/20 13 45 0000     O.OV9      14.1
         13 45 000?     0.102
74/05/30 11 00 0000     0.116      26.9
         11 00 0002     0.122
         11 00 0004                           1.0
74/11/12 09 30 0000     0.129       6.1
         09 30 0005     0.255
      K VALUE KNOWN TO BE  LESS THAN
              INDICATED

-------
STORET RETRIEVAL.  UATE 75/12/11
NATL EUTSOPnICATION
FPA-LAS VEGAS
    220=02
   30 45 ai.O  093  07 00.0
                                                                    22
                                                                            LOUISIANA
                                                                    llti-ALES
                                                                    3

UATE
FROM
TO
74/03/20
74/05/30

74/11/12

DATE
FROM
TO
74/03/20
74/05/30

74/11/12

TIvE OEVT"
OF
DAY FEET
14 00 0000
11 15 0000
11 lb 000?
09 15 0000

TIME DEPTH
OF
DAY FEET
14 00 0000
11 15 0000
11 15 0002
09 15 0000
oooio
4A1EP
TEMi-'
CENT
24.2
28.2
2H.7
15.7
0066b
PHOS-TOT

MG/L P
0.185
0.197
0.212
0.350
00300
DO

MG/L
9.0

5.6
6.4
32217
CHLRPHYL
A
UG/L
21.1
38.5

16.1
000/7
TKAMi.P
SECCnl
INCHES
28
36

25
00031
INCDT LT
REMNING
PEKCENT




                                                      o 0 0 V «•
                                                    CNDUCTVY
                                                    FIELD
                                                         125
                                                          75
                                                          75
00400
 Pn

 St,'

  6.45
  7.00
  6. HO
  5.85
                                                                                        1005  FEcT
 00410
T ALK
CAC03
 MG/L
     10K
     25
     24
     10*
 00610
NH3-N
TOTAL
 MB/L

  0.100
  0.040
  0.040
  0.120
TOT -,JtL
   M
  MG/L

   O.bOO
   0.600
   O.oOO
   O.iOO
  110610
NO?f,N03
N-TOTAL
   O.?50
   n.030
   O.OftO
   0.310
PHOS-DIS
 "G/L P

   0.071
   O.OH1
   0.094
   0.194
     K VALUE KNOWN TO BE LESS THAN
              INDICATED

-------
       APPENDIX D

TRIBUTARY AND WASTEWATER
  TREATMENT PLANT DATA

-------
STORE! RETRIEVAL DATF 77/Ot/ll
/TYPA/AMBNT/STPF-A--*
 22C5A1
30 44 00.0 093 04 <*5.0  4
riJNOICK C-(EE*
2?      7.5 D*Y C^EE*
0/HUMOICK LAKE            102091
oNK OFF END OF 2NO*Y RO BELOW  DAM
HE^ALES            04001004
 0000 FEET  DEPTH  CLASS  00
DATE
FROM
TO
74/06/09
74/07/07
74/08/10
74/09/08
74/10/10
74/1 1/12
74/12/07
75/01/13
75/02/08
75/02/23
75/03/08
75/03/24
75/04/07
75/04/21
75/05/02
00630 00625
TIME DEPTH NO?\N03 TOT KJEL
OF N-TOTAL N
DAY FEET
12
12
18
20
13
13
09
18
12
11
12
16
13
09
12
15
00
00
30
15
IS
40
35
55
30
00
45
00
45
on
MG/L
0
u
0
0
0
£
0
0
0
0
c
C
c
0
0
.016
.056
.012
.024
.024
.056
.104
.112
.192
.160
.098
.144
.085
.145
.oao
MG/L
i
0
i
0
i
c
0
0
0
0
0
0
0
0
1
.100
.700
.000
.700
.300
.600
.700
.800
.400
.800
.700
.800
.750
.900
.000
0)610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTrtO
MG/L
0.
0.
0.
0.
c.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
020
035
020
040
C65
OSO
045
104
040
048
030
048
025
045
070
MG/L
0.
0.
0.
0.
0.
c .
0.
0.
0.
0.
0.
0.
0.
0.
c .
p
045
015
010
035
020
045
065
096
080
072
066
064
055
070
055
MG/L P
0.135
0.100
0.090
0.080
0.090
0.100
0.120
0.130
0.110
0.120
0.140
0.120
0.110
0.120
0.110

-------
STOSET RETRIEVAL DATF. 77/r;4/li
                                                                   22GSA2
                                                                  30 49 05.0 093 13 45.0 4
                                                                  BUNDICX C^EtK
                                                                  22      15 SUGARTOaN
                                                                  T/bUNOICK LAKE           1020*1
                                                                  LA HWY 2b br(DG 1 M SE US HwY 171/190 JCT
                                                                  11EPALES            04001004
                                                                   0000 FEtT  DEPTH  CLASS 00
DATE
FROM
TO
74/06/09
74/07/07
74/08/10
74/09/08
74/10/10
74/1 1/12
74/12/07
75/01/13
75/02/08
75/02/23
75/03/08
75/03/24
75/04/07
75/04/21
75/05/02
00630 00625
TIME DEPTH N02sN03 TOT KJEL
OF N-TOTAL M
DAY FEtT
13
10
17
19
12
17
10
17
12
10
10
17
11
10
10
45
30
10
45
15
?0
45
30
15
40
40
30
45
40
45
MG/L
0
0
0
0
0
c
0
0
0
rt
*
c
,1
0
0
0
.420
.510
.460
.092
.768
.176
.168
.088
.320
.448
.328
.432
.590
.460
.160
MG/L
0
1
1
0
0
0
1
0
0
0
0
0
0
0
1
.700
.700
.000
.900
.eoo
.800
.200
.600
.650
.600
.600
.600
.400
.700
.250
00610 00671 OC665
NH3-N PHOS-DIS PHOS-TOT
TOTAL OfiTHO
MG/L
0
1
0
!)
0
0
0
0
0
n
0
0
0
0
0
.200
.100
.055
.063
.375
.050
.050
.160
.064
.080
.048
.104
.040
.100
.125
MG/L
0.
1.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
c.
0.
p
447
162
420
110
730
170
115
120
120
240
168
192
260
230
040
MG/L r>
0.525
l.bOO
0.490
0.175
0.850
0.240
0.210
0.140
0.150
0.310
0.240
0.260
0.320
0.480
0.080

-------
STORET RETRIEVAL OAT£ 77/0^/11
                                                                  2205dl
                                                                 30 46 20.0 093  14  30.0 4
                                                                 PALMETTO OEEK
                                                                 22      Ib SUGAftTOrtN
                                                                 T/tiUNDIOK LAKE            102091
                                                                 US HWY'  190/171  B«UG 1.6 MI N LA  HWY  394
                                                                 IIEPALES            0*001004
                                                                  0000 FEET  DEPTH  CLASS  00
DATE
FROM    OF
 TO    DAY
         TIME DEPTH
              FEET
74/06/09
74/07/07
74/08/10
74/09/08
74/10/10
74/1 1/12
74/12/07
75/01/13
75/02/08
75/02/23
75/03/08
75/03/24
75/04/07
75/04/21
75/05/02
       14 45
       10 15
          00
          09

          in
          on
          15
          00
          30
          30
       17 45
       11 30
       11 00
       10 30
00630
N02tiN03
N-TOTAL
MG/L
0.384
0.320
0.024
0.208
0.112
0. Ibd
0.232
0.184
0.296
C.184
0.368
0.432
0.525
0.530
0.330
00625
TOT KJEL
N
MG/L
0.500
0.8CO
1.100
0.900
0.^00
1.000
1.100
1.000
0.800
0.900
1.000
1.400
0.600
0.850
1.550
00610
NM3-M
TOTAL
MG/L
0.09Q
0.052
0.315
0.065
0.020
o.cro
0.060
0.096
0.240
0.096
0.212
0.112
0.055
0.070
0.210
00671
PrtOS-DIS
ORTHO
MG/L P
0.346
0.255
0.200
0.150

0.110
0.140
0.120
0.208
0.160
0.200
0.232
0.163
0.345
0.140
00665
PHOS-TOT

MG/L P
0.390
0.405
0.306
0.200
C.220
U.240
0.270
0.180
0.270
0.280
0.320
0.360
0.280
0.460
0.210

-------
STO«ET RETRIEVAL DATE 77/04/11
/TYPA/AMBNT/STPEAM
  DATE   TIME DEPTH NOr7
  FROM    OF
   TO    DAY  FEET
74/06/03
74/07/07
74/08/10
74/09/08
74/10/10
74/11/12
74/12/07
75/01/13
75/02/08
75/02/23
75/03/08
75/03/24
75/04/07
75/04/21
75/05/02
13 00
10 SO
17 ?0
17 55
12 40
17 35
10 20
17 40
12 25
10 55
11 30
17 15
12 10
10 ?0
11 15


0630
e>N03
OTAL
'G/L
C.066
C.160
0.06H
0.048
0.040
0.048
0.14J,
0.104
0.088
0.048
0.044
0.144
0.075
0.110
0.195


00625
TOT KJEL
N
MG/L
0.700
0.800
0.700
0.400

0.650
1.800
0.500
0.300
C.400
0.500
1. 100
0.350
0.250
1.000


00610
NH3-N
TOTAL
MC,/L
O.C30
0.065
0.027
0.030
0.070
O.C40
C.I 40
0.048
0.024
0.016
0.033
0.072
0.030
0.030
0.105


00671
PnOS-OIS
GPTHO
MG/L P
0.0/5
0.125
0.075
0.075
0.065
0.080
0.125
0.048
0.056
0.072
0.056
0.096
C.065
0.080
C.080
11EPALES
0000 FEET
00665
PHOS-TOT

MG/L P
0.095
0.180
0.115
0.090
0.075
0.135
0.180
0.080
0.070
0.100
0.100
0.150
0.080
0.110
0.130
 2205C1
30 47 15.0 093 10 20.0 4
OEE>? CREEK
22      15 SUGARTOrfN
T/b'JNOICK LAKE           102091
2NDRY RD dRDG 1.3 MI S* LA HWY 26 JCT
                    04001004
            DEPT-i  CLASS 00

-------
bTOHET WETSIFVAL OATr  77/04/1i
                                                                   P205D1
                                                                  3C 46 45.0 C93 06 45.0 4
                                                                  ?2      Ib S
                                                                  T/aONOICK LAKE            102091
                                                                  2NORY ^0 1147 1.6 MI S LA -H*Y  26  JCT
                                                                  lltr'ALES            04001004
                                                                   0000 FEET  jEPTn  CLAbS  00
DATE
FROM
TO
74/0 to/ 09
74/07/07
74/08/10
74/C9/08
74/10/10
74/1 1/12
74/12/07
75/01/13
75/02/08
75/02/23
75/03/08
75/03/24
75/04/07
75/04/21
75/05/0?
TIMF OEPT-
0»-'
JAY FEET
11
11
17
20
\2
17
10
18
12
11
11
17
12
10
11
00
10
35
10
SO
55
10
00
35
10
45
00
30
00
35
J0630 00625
- N02-SN03 TOT KJEL
N-TOTAL N
MG/L
0
0
rs
0
Q
0
0
0
0
0
c
o
0
0
o
.C2<*
.770
.116
.024
.0-JO
.040
.104
.032
.016
.016
.010
.064
.060
.115
.oeo
MG/L
2.
1.
U.
C.
1 .
r»
o!
0.
0.
0.
0.
0.
1.
0.
0.
300
300
700
900
^r-o
900
«oo
400
900
600
700
600
150
H50
750
OC610 00671 00665
N-ij-N PHOS-OIS K'HOS-TOT
TOTAL OPT HO
MO/L
0
0
0
0
0
t.
•0
0
0
0
0
0
0
0
0
.870
.095
.120
.045
.400
.035
.015
.016
.032
.024
.028
.080
.?7Q
.150
.070
KG/L
0.
0.
0.
0.
0.
V .
0 .
0.
0.
0.
0.
0.
0.
0.
0.
p
016
065
020
030
030
OriO
135
016
024
016
015
024
025
030
020
MG/L P
0.105
0.160
0.055
C.055
0 . 1 7i>
U. 18C
0.210
O.U40
0.050
0.060
0.065
0.070
0.060
0.070
0.040

-------
STORET RETRIEVAL DATE 77/04/11
DATE
FROM
TO
75/03/17
CP(T)-
75/03/17
75/04/16
CPITI-
75/04/16
75/05/22
75/06/26
CP(T)-
75/06/26
75/07/23
CP(T)-
75/07/23
75/08/25
CP(T>-
75/08/25
00630
TIME DEPTH N02NN03
OF N-TOTAL
DA* FEET MG/L
08

14
08

14
08
08

14
08

16
08

15
30

30
30

30
30
30

30
30

30
30

30

1.


1.

1.

2.


0.


0.


840


600

150

000


900


725

00625
TOT KJEL
N
MG/L

12


8

13

7


10


13


.000


.700

.000

.500


.500


.500

0*5610
NH3-N
TOTAL
MG/L

4


2

3

3


2


1


.620


.200

.450

.700


.400


.700

                                                                  2205AA           TF2205AA      P010110
                                                                 31 01 45.0  093  If  15.0 4
                                                                 F05T POLK  (S)
                                                                 22       7.5 FORT  POLK
                                                                 T/8UNDIC* LAKE            1201v2
                                                                 6UNOICK  CREEK
                                                                 11EPALES            0000100-*
                                                                  COOO FEET  DL^TH  CLAS5  00
  00671     00665
PHOS-DIS  PHOS-TOT
 ORTHO
 MG/L P    MG/L P
                                                     3.680
             5.600
                                                               4.300

                                                     4.800     5.700

                                                     3.100     3.700
                                                     2.700
                                                     4.100
             3.600
             5.100
                                                                         50051     50053
                                                                         FLOW    CONDUIT
                                                                         KATE    FLOw-MGO
                                                                       INST MOD  MONTHLY
2.100


1.630

1.860

2.400


2.380


2.360
1.350


1.340

1.350

1.900


2.200


2.350

-------
STORET RETRIEVAL DATE 77/04/11
/AM6NT/STREAM
 2205X6          TF2205XA     PQ08POO
30 51 30.0 093 16 00.0 4
OE RIDDER
22      is OE RIDDER
T/cJUNDICK LAKE           1020V2
HICKORY BRA^CM-FLAT CREEK
11EPALES            00001004
 0000 FEET  DEPTH  CLASS 00
DATE
FROM
TO
74/07/17
CP(T)-
74/07/17
74/08/26
CP(T)-
74/08/26
74/09/25
CP-
74/10/25
74/11/27
74/12/31
CP(T>-
74/12/31
75/02/12
CPtT)-
75/02/12
75/04/02
CP(T)-
75/04/02
75/06/11
CP(T>-
75/06/11
75/07/03
CP(T)-
75/07/03
75/08/13
00630
TIME DEPTH N026.N03
OF N-.TOTAL
GAY FEET MG/L
11

16
08

16
11

16
11

16
14
11

16
10

14
11

16
11

16
11

16

30

00
00

on
00

00
00

00
00
00

00
00

00
00

00
00

00
00

00


7.


0.


1.


5.

2.

3.


3.


0.


4.


5.

2.

360


120


800


760

480

040


120


160


600


-.00

500
00625
TOT KJEL
N
MG/L

7.300


9.600


6.700


12.000

8.100

5.300


7.300


10.000


2.950


5.100

6.500
00610 00671 00665 50051 50053
NHS-N PHOS-DIS PHOS-TOT FLOW CONDUIT
TOTAL OPTHO RATE FLOw-MGD
MG/L MG/L P MG/L P INST MGO MONTHLY

2.


0.


3.


5.

3.

?.


2.


0.


1.


1.

2.

300


220


250


300

750

500


960


300


100


350

800

2.880





3.850


5.000

2.700

1.600


2.700





1.400


2.400

3.500

4.400


4.700


4.300


5.750

3.600

2.000


3.450


5.700


1.900


2.800

4.000

1.000


1.000


1.000


1.000

1.000

1.000


1.000


1.000


1.000


1.000

1.000

1.000


1.000


1.000


1.000

1.000

1.000


1.000


1.000


1.000


1.000

1.000

-------
STORE! RETRIEVAL DATE 77/04/H
DATE
FROM
TO
75/03/17
CP(T)-
75/03/17
75/04/16
CP(T>-
75/04/16
75/05^2
CP(T>-
75/05/22
75/06/26
CPU>-
75/06/26
75/07/23
CP(T>-
75/07/23
75/08/25
CP(T)-
75/08/25
00630
TIME DEPTH N02&N03
OF N-TOTAL
DAY FEET MG/L
09

15
09

15
09

15
09

15
08

16
08

15
CO

00
00

no
00

00
30

30
30

30
30

30

2


2


4


1


3


1


.960


.200


.300


.900


.800


.000

00625
TOT KJEU
N
MG/L

14


24


19


25


18


24


.000


.250


.500


.500


.500


.000

                                                                  2205YA          TF2205YA      P00752U
                                                                 31 06  15.0 093 08  15.0 4
                                                                 FOPT POLK  (,N)
                                                                 22      7.5 FO*T POLK
                                                                 T/8U\OICK  LAKE            120192
                                                                 »HISKEY CHITTO CREtK
                                                                 11EPALES            0000100-+
                                                                  OOCO  FEET  DEPTH  CLASS  00

                                          OC610     00671     00665     50051     50053
                                         NH3-N    PHOS-OIS  PhOS-TOT    FLO*    CONDUIT
                                         TOTAL     ORTHO                RATE    FLOrt-MGD
                                          MG/L     MG/L P    MG/L P   INST  MGD  MONTHLY
                                          11.200     7.800     8.200     0.302
                              0.604
                                           R.300     6.300
          7.300
0.167     0.581
                                           6.100
6.500     7.200     0.600     0.494
                                           9.500     7.300
          8.200
0.910     0.60<«
                                           4.300
5.100     6.100
1.730
                                          12.000     6.400     7.200     0.805
1.600
                              0.766

-------
         APPENDIX E

PARAMETRIC RANKINGS OF LAKES
   SAMPLED BY NES IN 1974

     STATE OF LOUISIANA

-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE  LAKE NAME

?201  ANACOCO LAKE

220?  BRUIN LAKE

2203  LAKE BISTINEAU

220*  BLACK BAYOU

2205  BUNDICK LAKE

2207  COCOORIE LAKE

2208  COTILE LAKE

2209  CONCOROIA LAKE

2210  CROSS LAKE

2211  D'ARBONNE LAKE

2212  FALSE RIVER LAKE

2213  INDIAN CREEK

22H  SALINE LAKE

2215  TURKEY CREEK LAKE

2216  LAKE VERRET

2217  LAKE VERNON

2219  BLACK LAKE

2220  COCODRIE

4807  CAODO LAKE
MEDIAN
TOTAL P
0.031
0.057
0.061
0.046
0.157
0.090
0.037
0.076
0.057
0.038
0.082
0.031
0.111
0.176
0.163
0.016
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
CHLORA
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
1?.733
33.433
20.125
15-
MIN oo
10.4-00
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
1.4.400
11.600
11.800
10.000
MEDIAN
DISS ORTHO P
0.007
0.012
o.oie
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

-------
PERCENT OF LAKES WITH HIGHER VALUES  (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE  LAKE NAME
?201  ANACOCO LAKE
2203  BRUIN LAKE
2203  LAKE RISTINEAU
2204  BLACK BAYOU
2205  BllNOICK LAKE
2207  COCODRIE LAKE
2208  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  CADDO LAKE
MEDIAN
TOTAL P
92 (
61 (
50 (
72 (
11 (
28 (
83 (
44 (
56 (
78 (
33 (
92 (
17 (
0 t
6 (
100 (
39 (
22 (
67 (
16)
11)
9)
13)
2)
5)
15)
8)
10)
14)
6)
16)
3)
0)
1)
18)
7)
4)
12)
MEDIAN
INORG N
83
11
58
72
33
0
58
83
83
56
39
28
6
17
58
44
22
100
94
( 14)
( 2)
( 9)
( 13)
( 6)
( 0)
( 9)
( 14)
( 14)
( 9)
( 7)
( 5)
( 1)
( 3)
( 9)
( 8)
( 4)
( 18)
( 17)
500-
MEAN SEC
67
83
61
78
33
11
94
39
28
56
89
50
0
22
6
100
72
17
44
( 1?)
( 15)
( 11)
( 14)
( 6)
( 2)
( 17)
< 7)
( 5)
( 10)
( 16)
( 9)
( 0)
( 4)
( 1)
( 18)
< 13)
( 3)
( 8)
MEAN
CMLOKA
89
61
72
56
44 1
11 i
83 <
22 i
6 i
94 l
28 1
39 1
67 1
33 1
0 (
100 (
78 (
17 (
50 1
( 16)
( 11)
( 13)
( 10)
I 8)
I 2)
1 15)
( 4)
I 1)
I 17)
I 5)
[ ,7)
1 12)
! 6)
: o)
18)
14)
: 3)
: 9)
15-
MIN 00
83
0
*2
5.0
78 i
100 •
33
14
72
42 i
6 i
14 i
94 1
22 1
56 1
28 (
67 (
61 (
89 (
( 15)
( 0)
( 7)
( 9)
[ 14)
I 18)
I 6)
( 2)
( 13)
t 7)
( 1)
! ?>••
[ 17)
I 4)
: 10)
: 5)
: 12)
: ii>
: 16>
MEDIAN
DISS OP1HO P
94
50
33
81
0 <
17 i
61 i
81 '
69 i
56 1
28 1
69 1
22 1
11 1
6 I
100 (
39 (
44 (
89 (
( 17)
( 9)
( 6)
t 14)
( 0)
I 3)
1 11)
( 14)
I 12)
I 10)
I 5)
1 12)
! 4)
( 2)
1)
18)
7)
8)
16)

-------