U.S. ENVIRONMENTAL PROTECTION AGENCY
               NATIONAL EUTROPHICATION SURVEY
                        WORKING PAPER SERIES
                                              REPORT
                                                ON
                                           LAKE BROI-f1WOOD
                                            BROWN COUNTY
                                              TEXAS
                                           EPA REGION VI
                                         WORKING PAPER No, 635
     CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
                                 and
    ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.P.O. 699-440

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                             REPORT
                               ON
                         LAKE BRDWNWDCD
                          BROW COUNTY
                             TEXAS
                         EPA REGION VI
                      WORKING PAPER No, 635
WITH THE COOPERATION OF THE
 TEXAS WATER QUALITY BOARD
          AND THE
    TEXAS NATIONAL GUARD
       FEBRUARY/ 1977

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                               CONTENTS
                                                          Page
  Foreward                                                  ii
  List of Texas  Study Reservoirs                             iv
  Lake and Drainage Area  Map                                 vi

  Sections
  I.  Conclusions                                             1
 II.  Lake and Drainage Basin  Characteristics                 3
III.  Lake Water Quality  Summary                              4
 IV.  Nutrient Loadings                                     10
  V.  Literature Reviewed                                   14
 VI.  Appendices                                            15

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                                 11
                          FOREWORD
    The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to freshwater lakes and
reservoirs.

OBJECTIVES

    The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
and impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and state management
practices relating to point-source discharge reduction and non-point
source pollution abatement in lake watersheds.

ANALYTIC APPROACH

    The mathematical and statistical procedures selected for the •
Survey's eutrophication analysis are based on related concepts that:

        a.  A generalized representation or model relating
    sources, concentrations, and impacts can be constructed.

        b.  By applying measurements of relevant parameters
    associated with lake degradation, the generalized model
    can be transformed into an operational representation of
    a lake, its drainage basin, and related nutrients.

        c.  With such a transformation, an assessment of the
    potential for eutrophication control can be made.

LAKE ANALYSIS

    In this report, the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented.  The report is formatted to provide state environmental
agencies with specific Information for basin planning [§303(e)], water
quality criteria/standards review [§303(c)], clean lakes [§314(a,b)],
and water quality monitoring [§106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.

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                                Ill
     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, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.

ACKNOWLEDGEMENT

     The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Texas Water Quality Board
for professional involvement, to the Texas National Guard for
conducting the tributary sampling phase of the Survey, and to
those Texas wastewater treatment plant operators who voluntarily
provided effluent samples.

     Hugh C.  Yantis, Jr., Executive Director of the Texas Water
Quality Board, and John B. Latchford, Jr., Director, and the staff
of the Field Operations Division provided invaluable lake documen-
tation and counsel during the Survey, reviewed the preliminary
reports, and provided critiques most useful in the preparation of
this Working Paper series.

     Major General Thomas Bishop, the Adjutant General of Texas,
and Project Officer Colonel William L. Seals, who directed the
volunteer efforts of the Texas National Guardsmen,  are also grate-
fully acknowledged for their assistance to the Survey.

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                                 TV
                  NATIONAL EUTROPHICATION SURVEY
                         STUDY RESERVOIRS
                '          State of Texas
NAME
Amistad
Bastrop
Bel ton
Braunig
Brownwood
Buchanan
Caddo
              t
Calaveras
Canyon
Colorado City
Corpus Christi

Diversion
Eagle Mountain
Fort Phantom Hill
Houston
Kemp
Lake O'The Pines

Lavon
Lewisvilie (Garza-Little Elm)
Livingston
COUNTY
Val Verde
Bastrop
Bell, Coryell
Bexar
Brown
Burnet, Llano
Harrison, Marion, TX;
Caddo Parish, LA
Bexar
Coma!
Mitchell
Jim Wells, Live Oak, San
Patricio
Archer, Baylor
Tarrant, Wise
Jones
Harris
Baylor
Camp, Marion, Morris,
Upshur
Coll in
Denton
Polk, San Jacinto, Trinity,
Walker

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Lyndon B. Johnson
Medina
Meredith

0. C. Fisher (San Angelo)
Palestine

Possum Kingdom

Sam Rayburn

Somerville
E. V. Spence
Stamford
Still house Hollow
Tawakoni
Texoma

Travis
Trinidad
Twin Buttes
White River
Whitney
Wright Patman (Texarkana)
Burnet, Llano
Bandera, Medina
Hutchinson, Moore,
Potter
Tom Green
Anderson, Cherokee,
Henderson, Smith
Palo Pinto, Stephens,
Young
Angelina, Jasper
Nacogdoches, Sabine, San
Augustine
Burleson, Lee, Washington
Coke
Haskell
Bell
Hunt, Rains, Van Zandt
Cooke, Grayson TX; Bryan,
Johnston, Love, Marshall, OK
Burnet, Travis
Henderson
Tom Green
Crosby
Bosque, Hill
Bowie, Cass

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LAKE BROWNWOOD
X
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0
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Tributary Sampling Site
Lake Sampling Site
Drainage Area Boundary
10 zo *m.
t 10 HI.
Scale
                          J    .>**
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Map  Location
                                                                                                                    31 *5'   —

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                              LAKE BROWNWOOD
                              STORE! NO. 4805

I.  CONCLUSIONS
    A.  Trophic Condition:
            Survey data indicate that Lake Brownwood is eutrophic;
        i.e., well supplied with nutrients and quite productive.
        Whether nutrient enrichment is beneficial or deleterious de-
        pends on the actual or potential effect on the uses of the
        lake.  In this regard, the Texas Water Quality Board has indi-
        cated that there is little or no known impairment of the desig-
        nated beneficial uses of this lake.
            Lake Brownwood ranked sixth in overall trophic quality when
        the 39 Texas reservoirs sampled in 1974 were compared using a
        combination of six parameters*.  Thirteen of the reservoirs had
        less median total  phosphorus, two had less and five had the
        same median dissolved phosphorus, eleven had less and one had
        the same median inorganic nitrogen, five had less mean
        chlorophyll a^, and 27 had greater mean Secchi disc transparency.
        Marked depression of dissolved oxygen with depth occurred at
        station 1 in August.
            Survey limnologists did not observe algal concentrations or
        macrophytes during their sampling visits.
    B.  Rate-Limiting Nutrient:
            The results of the algal assay indicate phosphorus was the
        rate-limiting nutrient at the time the sample was collected
        (03/07/74).
* See Appendix A.

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            The lake data  indicate  phosphorus  limitation  in March and May
        but nitrogen limitation  in  August and  October.
    C.  Nutrient Controllability:
            1.  Point  sources—No known municipal or  industrial  point
        sources impacted Lake  Brownwood during  the sampling year.  Septic
        tanks serving  lakeshore  dwellings and  recreation  areas were
        estimated to have  contributed 2% of  the  total phosphorus load to
        the lake, but  a shoreline survey would  be needed  to determine the
        significance of those  sources.
            The present phosphorus  loading of  0.29 g/m2/yr is less than
        that proposed  by Vollenwekit-r (Vollenweider and Dillon,  1974) as
        a eutrophic loading  but  is  more than his suggested oligotrophic
        loading (see page  12).
            2.  Non-point  sources—The non-point phosphorus load, including
        precipitation, amounted  to  98.0% of  the  total load reaching the
        lake.  Jim Ned Creek contributed 53.2% of the total, Pecan Bayou
        added 22.6%, and ungaged tributaries contributed  an estimated
        16.2% of the total.
            The non-point  phosphorus exports of  Jim Ned Creek and Pecan
        Bayou were 3 and 1 kg/km2/yr, respectively (see page 11).  These
        export rates are quite comparable to the rate of  a tributary of
        nearby Lake Colorado City*  (1 kg/km2/yr) but  higher than a tribu-
        tary of 0. C.  Fisher Reservoir** (<1 kg/km2/yr).
* Working Paper No. 640.
** Working Paper No. 656.

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II.   LAKE AND DRAINAGE BASIN CHARACTERISTICS1"

     A.   Lake Morphometry  :

         1.   Surface area:   29.54 kilometers2.

         2.   Mean depth:   6.0 meters.

         3.   Maximum depth:   >16.8 meters.

         4.   Volume:  177.240 x 106 m3.

         5.   Mean hydraulic  retention  time:   1.5 years  (based on outflow)

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

         1.   Tributaries -

                                               Drainage        Mean flow
             Name                              area (km2)*     (m3/sec)*

             Pecan Bayou                         1,623.9          2.000
             Jim Ned Creek                       1,634.3          2.003
             Minor tributaries &
              immediate drainage -                 687.9          0.890

                            Totals               3,946.1          4.893

         2.   Outlet -

             Brownwood Aqueduct                      0.0          0.750
             Pecan Bayou                         3,975.6          2.894

                            Totals               3,975.6**        3.644

     C.   Precipitation***:

         1.   Year of sampling:  74.2 centimeters.

         2.   Mean annual:  69.6 centimeters.
 t Table of metric conversions—Appendix B.
 tt Latchford, 1974.
 * 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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III.   LAKE WATER QUALITY SUMMARY
      Lake Brownwood was sampled four times during 1974 by means  of a
  pontoon-equipped Huey helicopter.  Each time, samples for physical  and
  chemical parameters were collected from four stations on the lake and
  from two or more depths at each station (see map, page vi).   During
  each visit, a single depth-integrated (4.6 m or 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 16.8 meters
  at  station 1, 8.2 meters at station 2, 3.0 meters at station 3, and
  9.1 meters at station 4.
      The sampling results are presented in full in Appendix D and are
  summarized in the following table.

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PARAMETER
TEMP (C)
oiss OXY (MG/L>
CNDCTVY  (MCROMOJ
PH (STAND UNITS)
TOT ALK  (MG/D
TOT P  (MG/L)
ORTHO  P  (MG/D
N02»N03  (MG/L)
AMMONIA  (MG/L)
KJEL N  (MG/L)
INORG  N  (MG/L)
TOTAL  N  (MG/L)
CHLRPYL  A  (Ur,/L>
SECCHI  (METERS)
                             A. SUMMARY OF PHYSICAL  AND
                             1ST SAMPLING  ( 3/ 7/74)
                                   4 SITES
                                  CHEMICAL CHARACTERISTICS FOR BROWNWOOD LAKE
                                   sro^er CODE 4^0
     RANGE
 11,7  -  18.1
  8.1  -  10.1
 <«70.  -  548.
  8.2  -   8.4
 121.  -  131.
0.010  - 0.071
0.004  - 0.015
0.050  - 0.090
0.020  - 0.040
0.300  - 0.700
0.070  - 0.130
0.360  - 0.760
  0.6  -   2.2
  0.5  -   1.5
                                             ?NO SAMPLING  ( 5/16/74)
                                                   4 SITES
3RD SAMPLING (  8/ 6/74)
      4 SITES
MEAN
14.9
9.3
506.
8.3
125.
0.026
0.007
0.065
0.032
0.446
0.097
0.512
1.1
1.0
MEDIAN
15.0
9.4
500.
8.3
125,
0.023
O.OG6
0.070
0.030
0.400
0.100
0.470
0.8
1.0
RANGE
21.3
4.4
625.
7.9
117.
0.017
0.005
0.030
0.020
0.300
0.050
0.340
1.4
0.1
- 25.9
7.6
- 695.
8.3
- 123.
- 0.083
- 0.010
- 0.080
- 0.060
- 0.900
- 0.140
- 0.980
4.7
0.9
MEAN
24.5
6.4
649.
8.2
120.
0.036
0.007
0.052
0.043
0.520
0.095
0.572
3.2
0.6
MEDIAN
24.7
7.0
634.
8.2
119.
0.024
0.007
0.040
0.040
0.500
0.080
0.540
3.4
0.7
RANGE
24.3
0.6
669.
7.7
116.
0.014
0.002
0.020
0.020
0.200
0.040
0.220
6.1
0.3
- 26.5
6.8
- 699.
8.3
- 132.
- 0.074
- 0.013
- 0.060
- 0.130
- 0.800
- 0.150
- 0.820
- 12.9
1.5
MEAN
25.9
5.1
691.
8.0
122.
0.029
0.006
0.024
0.045
0.354
0.06b
0.378
9.3
0.8
MEDIAN
26.1
6.0
694.
8.1
121.
0.021
0.006
0.020
0.040
0.300
0.060
0.320
•v.O
0.6

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                             A. SUMMARY or PHYSICAL  AND  CHEMICAL  CHARACTERISTICS FOH a«owN«ooD LAKE
                                                          STCMET  CUOE  4
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B.   Biological  characteristics:

    1.   Phytoplankton -
        Sampling
        Date

        03/07/74
        05/16/74
        08/06/74
        10/29/74
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Chroomonas sp.
Flagellates
Ankistrodesmus sp,
Nitzschia sp.
Cryptomonas s£.
Other genera
Total
Nitzschia sp.
Cryptomonas sp.
Chi amydomonas sj>.
Chroomonas sp.
Lyngbya sp_.
Other genera
Total
Lyngbya sp.
Oscillatoria sp.
Raphidiopsis sji.
Nitzschia sp.
Cryptomonas sj).
Other genera
Total
Chlamydomas sp.
Chroomonas sp.
Cryptomonas sp.
Cyclotella SJD.
Gymnodinium sj).
Other genera
Algal Units
per ml	
                                          Total
    1,407

      919
      238
      204
      170
      136
      410

    2,077

    1,277
      998
      399
      399
      319
      599

    3,991

      204
      204
      204
       58
       58
      291

    1,019

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    2.  Chlorophyll a -
Sampling
Date
03/07/74



05/16/74



08/06/74



10/29/74



Station
Number
- 1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
C.   Limiting Nutrient Study:

    1.  Autoclaved, filtered, and nutrient spiked -
                         Ortho P
                         Cone, (mg/1)
Inorganic N
Cone,  (mg/1)
                                                         Chlorophyll  a
                                                         (yg/D

                                                              0.7
                                                              0.6
                                                              2.2
                                                              1.0

                                                              2.2
                                                              1.4
                                                              4.6
                                                              4.7

                                                              6.1
                                                             10.6
                                                             12.9
                                                              7.5

                                                              6.5
                                                              3.8
                                                              8.8
                                                              4.6
Maximum yield
(mg/1-dry wt.)
Spike (mg/1)

Control
0.050 P
0.050 P + 1.0 N
1.0 N
        Discussion -

            The control yield of the assay alga,  Selenastrum capri-

        cornutum, indicates that the potential  primary productivity
0.005
0.055
0.055
0.005
0.112
0.112
1.112
1.112
0.1
2.8
15.3
0.1

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of Lake Brownwood was low when the sample was taken in
March, 1974. Also, the significant increase in yield when
orthophosphorus was added and the lack of response to
nitrogen added alone indicate phosphorus limitation.
    The lake data indicate phosphorus limitation in March
and in May (the mean inorganic nitrogen/orthophosphorus
ratio was 14/1 at those times).   However, nitrogen limi-
tation is indicated in August and October; i.e., the mean
N/P ratios were 11/1 and 10/1, respectively, and nitrogen
limitation would be expected.

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                                   10
IV.   NUTRIENT LOADINGS                 f
     (See Appendix E for data)
     For the determination of nutrient loadings,  the  Texas  National
 Guard collected monthly near-surface grab samples  from each  of  the
 tributary sites indicated on the map (page vi),  except for the  high
 runoff months of April  and May when two  samples  were collected.
 Sampling was begun in September, 1974, and was completed in  July,
 1975.
     Through an interagency agreement, stream flow  estimates  for the
 year of sampling and a "normalized" or average year  were provided by
 the Texas District Office of the U.S. Geological Survey for  the
 tributary sites nearest the lake.
     In this report, nutrient loads for sampled tributaries were
 determined by using a modification of a  U.S.  Geological Survey  computer
 program for calculating stream loadings*.
     Nutrient loads for unsampled "minor  tributaries  and immediate
 drainage" ("ZZ" of U.S.G.S.) were estimated using  the means  of  the
 nutrient loads, in kg/km 2/year, at stations A-2  and  C-l and  multiplying
 the means by the ZZ area in km2.
     No known wastewater treatment plants impacted  Lake Brownwood
 during the sampling year.
*  See Working Paper No.  175.

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                                   11
    A.  Waste Sources:
        1.  Known municipal - None
        2.  Known industrial - None
    B.  Annual Total Phosphorus Loading - Average Year:
        1.  Inputs -
                                              kg P/          % of
            Source                            yr             total
            a.  Tributaries (non-point load) -
                Pecan Bayou                   1,925           22.6
                Jim Ned Creek                 4,530           53.2
            b.  Minor tributaries & immediate
                 drainage (non-point load) -  1,375           16.2
            c.  Known municipal STP's - None
            d.  Septic tanks* -                 170            2.0
            e.  Known industrial - None
            f.  Direct precipitation** -        515            6.0
                        Total                 8,515          100.0
        2.  Outputs -
            Lake outlet - Brownwood Aqueduct    500
                          Pecan Bayou         2,475
                           Total              2,975
        3.  Net annual P accumulation - 5,540 kg.
* Estimate based on 575 lakeshore dwellings, 2 campgrounds, and 1 park;
  see Working Paper No. 175.
** See Working Paper No. 175.

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                                   12
    C.  Annual Total Nitrogen Loading - Average Year:
        1.  Inputs -
                                              kg N/          % of
            Source                            yr             total
            a.  Tributaries (non-point load) -
                Pecan Bayou                    88,985         37.8
                Jim Ned Creek                  74,065         31.4
            b.  Minor tributaries & immediate
                 drainage (non-point load) -   34,395         14.6
            c.  Known municipal STP's --None
            d.  Septic tanks* -                 6,305          2.7
            e.  Known industrial - None
            f.  Direct precipitation** -       31,890         13.5
                        Total                 235,640        100.0
        2.  Outputs -
            Lake outlet - Brownwood Aqueduct   12,865
                          Pecan Bayou          73,050
                           Total               85,915
        3.  Net annual N accumulation - 149,725 kg.
    D.  Non-point Nutrient Export by Subdrainage Area:
        Tributary                             kg P/km2/yr    kg N/ktn2/yr
        Pecan Bayou                               1              55
        Jim Ned Creek                             3              45
* Estimate based on 575 lakeshore dwellings, 2 campgrounds, and 1 park;
  see Working Paper No. 175.
** See Working Paper No. 175.

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                              13
E.   Mean Nutrient Concentrations in Ungaged Streams:
                                          Mean Total P   Mean Total N
    Tributary                             Cone, (mg/1)   Cone, (mg/1)
    Hog Creek                                 0.063          1.122
    Rough Branch                              0.021          1.014
F.   Yearly Loads:
        In the following table, the existing phosphorus loadings
    are compared to those proposed by Vollenweider (Vollenweider
    and Dillon, 1974).   Essentially, his "dangerous" loading is
    one at which the receiving water would become eutrophic or
    remain eutrophic; his "permissible" loading is that which
    would result in the receiving water remaining oligotrophic
    or becoming oligotrophic if morphometry permitted.  A meso-
    trophic loading would be considered one between "dangerous"
    and "permissible".
        Note that Vollenweider's model may not be applicable to
    water bodies with short hydraulic retention times.
                              Total Phosphorus       Total Nitrogen
    	Total   Accumulated    Total   Accumulated
    grams/m2/yr             0.29       0.19        8.0        5.1

    Vollenweider phosphorus loadings
     (g/tn2/yr) based on mean depth and mean
     hydraulic retention time of Lake Brownwood:
        "Dangerous"  (eutrophic loading)            0.40
        "Permissible"  (oligotrophic loading)       0.20

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                                  14
V.  LITERATURE REVIEWED

    Latchford, John B. Jr., 1974.  Personal communication (lake mor-
        phometry).  TX Water Qual. Bd., Austin.

    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.

    Yost, I. D., 1976.  Personal communication (estimate of evaporation
        at Brownwood Reservoir).  U.S. Geol.  Surv., Austin.

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VI.   APPENDICES
                                  15
                                   APPENDIX A
                                  LAKE  RANKINGS

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LAKE DATA TO BE USED IW RANKINGS
LAKE
CODE  LAKE SAME
4801  AMISTAD LAKE
4802  8ASTROP LAKE5
4803  BELTON RESERVOIR
4804  BRAUNIG LAKE
4805  BROWNWOOD LAKE
4806  LAKE BUCHANAN
4807  CAOOO LAKE
4808  CALAVERAS LAKE
4809  CANYON RESERVOIR
4810  LAKE COLORADO CITY
4811  CORPUS CRISTI LAKE
4812  DIVERSION LAKE
4813  EAGLE MOUNTAIN LAKE
4814  FT PHANTOM HILL LAKE
4815  GARZA LITTLE ELM RESERVO
4816  KEMP LAKE
4817  HOUSTON LAKE
4818  LAKE OF THE PINES
4819  LAVON RESERVOIR
4820  LIVINGSTON LAKE
4821  LYNDON B JOHNSON LAKE
4822  MEDINA LAKE
4823  LAKE MEREDITH
4824  PALESTINE LAKE
4825  POSSUM KINGDOM RESERVOIR
4826  SAN ANGELO RESERVOIR
4827  SAM RAYBURN RESERVOIR
4828  E V SPENCE RESERVOIR
MEDIAN
TOTAL P
0.013
0.02?
0.016
0.134
0.027
0.036
0.055
0.038
0.010
0.042
0.113
0.025
0.024
0.060
0.045
0.023
0.097
0.031
0.063
0.196
0.042
0.010
0.021
0.031
0.023
0.098
0.029
0.036
MEDIAN
INO^G N
0.500
0.090
0.185
0.150
0.100
0.250
0.070
0.060
0.450
0.090
0.130
0.080
0.070
0.105
0.380
0.110
0.260
0.090
0.180
0.555
0.420
0.600
0.070
0.180
0.070
0.140
0.150
0.080
500-
MEAN SEC
371.474
419.917
378.312
461.625
470.375
437.625
463.333
461.667
384.812
473.625
475.187
470.111
469.625
474.909
475.782
455.000
486.187
440.000
485.333
465.469
456.500
403.562
439.312
442.625
419.045
481.000
439.458
462.583
MEAN
CHLORA
2.042
12.392
8.025
22.762
4.887
8.606
14.808
22.500
2.500
12.675
19.756
15.867
5.662
6.317
14.156
10.217
16.650
12.919
5.400
16.112
8.100
12.944
3.037
10.619
9.495
24.675
6.267
11.775
15-
MIN 00
14.900
15.000
15.000
14.800
14.400
15.000
11.400
13.000
14.800
10.200
14.000
9.000
11.000
9.800
14.600
10.400
12.400
15.000
8.800
15.000
14.900
15.000
14.900
14.800
15.000
10.200
15.000
15.000
MEDIAN
DISS OWTriO P
0.009
0.007
0.007
0.062
0.007
0.012
0.013
0.007
0.006
0.012
0.050
0.009
0.008
0.022
0.018
0.007
0.036
0.011
0.018
0.128
0.013
0.004
0.009
0.010
0.009
0.011
0.009
0.008

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

LAKE
CODE  LAKE NAME

4839  SOMERVILLE LAKE

4830  STAMFORD LAKE

4831  STILLHOUSE HOLLOW RESEKV

4832  TAWAKONI LAKE

4833  TEXARKANA LAKE

4834  TEXOMA LAKE

4835  TRAVIS LAKE

4836  TRINIDAD

4837  TWIN BUTTES RESERVOIR

4838  WHITE RIVER RESERVOIR

4839  WHITNEY LAKE
MEDIAN
TOTAL P
0.053
0.073
O.Olb
0.046
0.106
0.042
0.018
0.389
0.029
0.020
0.028
MEDIAN
1NOHG N
0.115
0.060
0.160
0.100
0.120
0.160
0.250
0.110
0.250
0.110
0.120
500-
MEAN 5EC
473. 833
482.714
406.250
46b.4l7
478.500
451.321
389.913
479.500
454.917
434.500
430.500
MEAN
CHLORA
24.491
18.457
J.917
18.246
19.119
12.493
5.595
24.300
8.708
4.333
6.912
15-
MIN DO
13.000
10.600
15.000
13.200
12.400
15.000
15.000
10.000
14.800
15.000
15.000
MEDIAN
OISS OrtT'rlO P
0.01 j
0.012
0.010
0.013
0.030
0.018
0.007
0.240
0.009
0.009
0.008

-------
PERCENT OF LAKES WilH HIGHER VALUES (NUMBER Of- LAKES Hit* HIGHEK VALUES)
LAKE
CODE  LAKE NAME
4801  AMISTAO LAKE
480?  BASTROP LAKE
4803  8ELTON RESERVOIR
4804  BRAUNIG LAKE
4805  BROHNWOOD LAKE
4806  LAKE BUCHANAN
4807  CADDO LAKE
4808  CALAVERAS LAKE
4809  CANYON RESERVOIR
48io  LAKE COLORADO CITY
4811  CORPUS CRISTI LAKE
4812  DIVERSION LAKE
4813  EAGLE MOUNTAIN LAKE
4814  FT PHANTOM HILL LAKE
4815  GARZA LITTLE ELM RESERVO
4816  KEMP LAKE
4817  HOUSTON LAKE
4818  LAKE OF THE PINES
4819  LAVON RESERVOIR
4820  LIVINGSTON LAKE
4821  LYNDON B JOHNSON LAKE
4822  MEDINA LAKE
4823  LAKE MEREDITH
4824  PALESTINE LAKE
4825  POSSUM KINGDOM RESERVOIR
4826  SAN ANOELO RESERVOIR
4827  SAM RAYBURN RESERVOIR
4828  E V SPENCE RESERVOIR
MEDIAN
TOTAL P
95
79
92
5
66
47
26
45
99
39
8
68
71
24
34
76
16
54
21
3
39
99
82
54
74
13
59
50
.( 36)
( 30)
( 35)
( 2>
( 25)
( 18)
( 10)
( 17)
( 37)
( 14)
( 3)
( 26)
< 27)
( 9)
( 13)
( 29)
( 6)
( 20)
( 8)
( 1)
( 14)
« 37)
( 3D
( 20)
< 28)
( 5)
( 22)
( 19)
MEDIAN
INO^G N
5
76
26
42
70
21
91
100
8
76
47
83
91
66
13
61
16
76
29
3
11
0
91
32
91
45
39
83
( 2)
( 28)
( 10)
( 16)
( 26)
( 7)
( 33)
( 38)
( 3)
( 28)
( 18)
( 31)
( 33)
( 25)
( 5)
( 22)
( 6)
( 28)
( 11)
t 1)
( 4)
( 0)
( 33)
( 12)
< 33)
( 17)
( 15)
( 31)
500-
MEAN SEC
100
82
97
50
29
74
42
47
95
26
18
32
34
21
16
55
0
66
3
39
53
89
71
63
84
8
68
45
( 38)
( 31)
( 37)
( 19)
( 11)
( 28)
( 16)
( 18)
( 36)
( 10)
( 7)
( 12)
( 13)
( 8)
( 6)
( 21)
< 0)
( 25)
( 1)
( 15)
< 20)
( 34)
< 27)
< 24)
< 32)
< 3)
( 26)
< 17)
MEAN
CHLOrIA
100
47
68
8
87
63
32
11
97
42
13
29
79
74
34
55
24
39
84
26
66
37
95
53
58
0
76
50
( 38)
( 18)
( 26)
( 3)
( 33)
( 24)
( 12)
( 4)
( 37)
( 16)
( 5)
( ID
( 30)
( 28)
( 13)
( 21>
( 9)
( 15)
( 32)
( 10)
( 25)
( 14)
( 36)
( 20)
( 22)
( 0)
( 29)
( 19)
15-
MIN DO
39
17
17
49
58
17
76
67
49
88
61
97
79
95
55
84
72
17
100
17
39
17
39
49
17
88
17
17
( 14)
( 0)
( 0)
( 17)
( 22)
( 0>
( 29)
( 25)
( 17)
( 33)
( 23)
( 37)
( 30)
( 36)
( 21)
( 32)
( 27)
( 0)
( 38)
( 0)
( 14)
( 0)
( 14)
< 17)
( 0)
( 33)
( 0)
( 0)
MEDIAN
OISS OxThO P
63 <
92 (
84 (
5 (
84 (
39 (
30 (
92 (
97 (
39 (
8 <
63 (
76 (
16 (
21 <
92 (
11 (
46 '(
21 (
3 (
30 (
100 (
63 (
51 (
63 (
46 (
63 (
76 (
21)
34)
31)
2)
31)
14)
10)
34)
37)
14)
3)
21)
28)
6)
7)
34)
4)
17)
7)
1)
10)
38)
21)
19)
21) .
17)
21)
28)
INDEX
NO
40<;
393
384
159
394
261
297
362
445
310
155
372
430
296
173
423
139
298
258
91
238
342
441
302
387
200
322
321

-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES *ITH HIGHER VALUES)

LAKE
CODE.  LAKE NAME

4829  SOMERVILLE LAKE

4830  STAMFORD LAKE

4831  STILLHOUSE HOLLOW RESEKV

4832  TAWAKONI LAKE

4833  TEXARKANA LAKE

4834  TEXOMA LAKE

4835  TRAVIS LAKE

4836  TH1NIOAD

4837  TWIN BUTTES RESERVOIR

4838  WHITE RIVER RESERVOIR

4839  WHITNEY LAKE
MEDIAN
TOTAL P
29
18
88
32
11
39
88
0
59
84
63
( 11)
( 7)
t 33)
( 12>
< 4)
( 14)
( 33)
( 0)
( 22)
( 32)
( 24)
MEDIAN
INORG N
55
97
37
70
51
34
21
61
21
61
51
( 21)
: 37)
( 14)
( 26)
( 19)
( 13)
( 7)
( 22)
( 7)
< 22)
( 19)
500-
MEAN SEC
24 (
5 <
67 (
37 (
13 (
61 (
92 (
11 (
58 (
76 (
79 (
9)
2)
33)
14)
5)
23)
35)
4)
22)
29)
30)
MEAN
CHLORA
3 (
18 (
92 (
21 (
16 (
45 (
82 (
5 (
61 <
89 (
71 (
1)
7)
35)
8)
6)
17)
3D
2>
23)
34)
27)
1S-
MIN 00
67
82
17
63
72
17
17
92
49
17
17
( 25)
< 31)
( 0)
( 24)
< 27)
( 0)
( 0)
( 35)
< 17)
( 0)
( 0>
MEDIAN
DISS o*rrio H
30 (
39 (
51 <
30 (
13 (
21 (
84 (
0 (
63 (
63 (
76 (
10)
14)
19)
10)
5)
7)
31)
0)
21)
21)
28)
INDEX
NO
20«
259
372
253
176
217
J84
169
311
390
357

-------
l_A
-------
LAKES RANKED BY INDEX NOS.



RANK  LAKE CODE  LAKE NAME               INDEX NO






  29  4821       LYNDON B JOHNSON LAKE      238




  30  4834       TEXOMA LAKE                217




  31  4829       SOMERVILLE LAKE            208



  32  4826       SAN ANGELO RESERVOIR   .    200




  33  4833       TEXAKKANA LAKE    •         176



  34  4815       GARZA LITTLE ELM RESERVO   173




  35  4836       TRINIDAD                   169



  36  4804       BRAUNIG LAKE               159



  37  4811       CORPUS CRIST! LAKE         155



  38  4817       HOUSTON LAKE               139




  39  4820       LIVINGSTON LAKE             91

-------
    APPENDIX B





CONVERSION FACTORS

-------
                CONVERSION FACTORS

Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
                         -4
Cubic meters x 8.107 x 10   = acre/feet
Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 = inches
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile

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

-------
                                 ,  TRIBUTARY FLO*  INFORMATION FOR
                                                                       03/16/76
LA*E CODE
6SOWNWOOD
     TOTAL DRAINAGE AREA OF I_AKE(SO KM)
          SUB-DRAINAGE
TRIBUTARY  APEAISQ KM)
       JAN
FEB
                       3975.6
MAR
                               APR
                                       MAr
NORMALIZED r'LOWS(CMS)
  JON     JUL     AU6
                                                                                           SEP
                                                                                                   OCT
                                                                                        NOV
                                                                                                                   UtIC
                                                                                                       MEAN
4805A1
4805A2
4805B1
4605C1
480SZZ
3975.6
1623.9
0.0
1634.3
717.4
6.070
1.00
0.45
1.10
0.48
1.246
0.93
0.51
0.93
0.42
5.040
1.33
0.62
1.39
0.59
2.407
3.74
O.B2
3.82
1.67
7.929
' 5.32
0.68
5.41
2.35
3.766
2.49
0.93
2.52
1.10
0.198
2.01
1.27
2.04
0.88
0.085
0.79
1.25
0.79
0.34
0.085
2.55
0.85
2.55
1.13
4.304
2.27
0.65
2.2*
0.99
0.340
0.7u
O.bl
0.7t
0.31
0.934
0.74
0.45
0.76
0.34
2.894
2.00
0.75
2.03
0.89
                        TOTAL DRAINAGE AREA OF LAKE =    3975.6
                        SUM OF SUB-DRAINAGE AREAS   =    3975.6
     MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY   MONTH   YEAR
4805A1
         MEAN FLOW  DAY
                 FLOW  DAY
4805A2
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
1.133
19.822
19.822
1.416
1.416
14.158
1.416
1.98?
4.531
1.982
0.142
0.057
33.980
42.475
18.406
2.832
2.832
8.495
0.708
0.850
1.699
0.425
0.142
0.003
7
5
2
7
4
1
1
5
5
7
26
16
7
5
2
7
4
1
1
5
5
7
26
16
0.003
4.248
113.267
1.982
1.416
28.317
2.549
0.142
0.283
2.549
0.142
0.0
0.0
6.796
39.644
2.265
2.265
28.317
1.133
0.283
0.311
0.510
0.085
0.0







21
17










21
17



                                                                   SUMMARY
                                                           TOTAL FLOW IN  =     67.96
                                                           TOTAL FLOW OUT =     34.40
                           FLOW  DAY
                                                                    FLOW
                                                                    0.850
                                                                    5.663
                                                                    0.453
                                                                    1.133

-------
                                   TRIBUTARY TLOK INFORMATION FOR
                                                                                          03/16/76
LAKE CODE '•SOS     o^OWNWOOO

     MEAN MONTHLY FLOrfS AND DAILY FLOWS(CMS)
TRIBUTARY   MONTH
4«05dl
 4805C1
 4805ZZ
9
10
11
12
1
2
3
i*
5
6
7
8
9
10
11
12
1
2
3
it
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
                            MEAN FLOW  OAY
                                                   FLOW  DAY
                                                                     FLOW  OftY
                                                                                       FLO*
0.453
0.340
0.425
0.538
0.566
0.566
0.453
0.481
0.660
0.963
1.076
1.133
7.079
14.158
11.327
1.133
1.133
5.097
0.566
0.14?
0.142
0.057
0.014
0.0
8.495
16.990
4.248
0.850
0.850
2.832
0.227
0.057
0.057
0.023
0.006
0.0
7
5
2
7
4
1
1
5
5
7
26
16
7
5
2
7
4
1
1
5
5
7
26
16












0.566
0.233
0.481
0.566
0.623
0.566
0.481
0.708
0.793
0.595
0.934
1.076
0.0
7.079
36.812
1.416
1.416
4.248
1.133
0.014
0.006
0.028
0.0
0.0



















21
17










21
17















                                                                    0.538
                                                                    0.623
                                                                     0.085
                                                                     0.057

-------
        APPENDIX D





PHYSICAL and CHEMICAL DATA

-------
STORET RETRIEVAL DATE 76/02/1!
                                                                  480501
                                                                 31 50 20.0 099  00
                                                                 BROVrNwOOD LAKE
                                                                 48049   TE'"\S
16.0

DATE
FROM
TO
74/03/07




74/05/16




74/08/06



74/10/29






TIME
OF
DAY
16
16
16
16
16
11
11
11
11
11
13
13
13
13
14
14
14
14
14


30
30
30
30
30
00
00
00
00
00
50
50
50
50
45
45
45
45
45

DE°TH

FEET
0000
0005
0015
0030
0046
0000
0005
0015
0035
0041
0000
0015
0030
0055
0000
0005
0015
0032
0048
00010
WATER
TEMP
CENT
14.7
14.3
13.1
12.6
11.7
24.6
24.7
24.3
21.5
21.3
26.3
26.2
26.0
25.5
19.3
19.3
19.0
18.8
18.5
11EPALES

00300
DO

MG/L

10.1
9.4
9.4
9.3


7.2
4.4
4.4

4.0
1.8
0.6
7.4
7.4
6.8

2.6

00077
TR4NSP
SECCHI
INCHES
60




35




60



36





00094
CNOUCTVY
FIELD
MICROMHO
495
500
485
500
470
634
695
688
672
677
698
694
699
699
418
420
416
406
372
3
00400
PH

su
8.30
6.30
8.20
8.20
8.20
«. 30
H. 30
8.20
7.90
7.90
8.00
7.70
7.70
7.70
8.15
8.10
8.05
7.95
7.75

00410
T ALK
CAC03
MG/L
123
121
122
123
123
119
118
119
121
122
121
119
127
132
103
101
102
100
101
211
0051
00610
NH3-N
TOTAL
MG/L
0.040
0.030
0.030
0.030
0.040
0.040
0.030
0.030
0.060
0.060
0.050
0.040
0.040
0.130
0.040
0.040
0.040
0.060
0.100
1202
FEET OE
00625
TOT KJEL
N
MG/L
0.700
0.400
0.300
0.300
0.400
0.500
0.300
0.400
0.400
0.300
0.800
0.300
0.200
0.300
0.500
0.500
0.400
0.400
0.400
                                                                                                     00630     00671
                                                                                                   N02J.N03   PriOS-OIS
                                                                                                   N-TOTAL    ORTHO
                                                                                                     MG/L     MG/L P
                                                                                                      0.060
                                                                                                      0.070
                                                                                                      0.070
                                                                                                      0.070
                                                                                                      0.090
                                                                                                      0.060
                                                                                                      0.040
                                                                                                      0.030
                                                                                                      0.080
                                                                                                      0.060
                                                                                                      0.020
                                                                                                      0.020
                                                                                                      0.020K
                                                                                                      0.020K
                                                                                                      0.090
                                                                                                      0.090
                                                                                                      0.090
                                                                                                      0.130
                                                                                                      0.200
                              0.012
                              0.007
                              0.004
                              0.004
                              0.006
                              0.006
                              0.007
                              0.008
                              0.010
                              0.008
                              0.011
                              0.007
                              0.009
                              0.007
                              0.008
                              0.008
                              0.008
                              0.013
                              0.020
         K VALUE KNOWN TO BE
         LESS  THAN  INDICATED

-------
STORET RETRIEVAL DATE 76/02.'11
                                                                   460501
                                                                  31  50  20.0  099  00  16.0
                                                                  B«0*N*OOD _AKE
                                                                  46049    TEXAS
                                                                  llEPAcES
                                                                  3
 2111202
0051 FEET  DEPTH

DATE
FROM
TO
74/03/07




74/05/16




74/08/06



74/10/29






TIME
OF
DAY
16
16
16
16
16
11
11
11
11
11
13
13
13
13
14
14
14
14
14


30
30
30
30
30
00
00
00
00
00
50
50
50
50
45
45
45
45
45

DEPTH

FEET
0000
0005
0015
0030
0046
0000
0005
001S
0035
0041
0000
0015
0030
0055
0000
0005
0015
0032
0048
00665 32217 00031
PHOS-TOT CHLRPHYL INGOT CT
A REMNING
MG/U P UG/L PERCENT
0.022 0.7
0.013
0.013
0.010
0.027
0.027 2.2
0.021
0.021
0.036
0.037
0.021 6.1
0.014
0.015
0.034
0.030 6.5
0.032
0.027
0.031
0.061

-------
STORE! RETRIEVAL DATE 76/02/H
                                                                   480502
                                                                  31  49  42.0  099 03 05.0
                                                                  8HOWNWOOO LAKE
                                                                  48049    TEV%S
DATE
FROM
TO
74/03/07


74/05/16



74/08/06



74/10/29



00010
TIME DEPTH *ATER
OF TEMP
DAY FEET
17
17
17
11
11
11
11
14
14
14
14
14
14
14
14
20
20
20
15
15
15
15
30
30
30
30
20
20
20
20
0000
0005
0020
0000
0005
0015
0020
0000
0005
0010
0018
0000
0005
0015
0027
CENT
15,
15,
13,
24,
24,
24,
24,
26.
26,
26.
26.
19.
19.
19.
19.

,1
.0
.6
,7
,6
.3
.1
.5
.2
,1
.0
,4
,3
,3
,0
00300
DO
MG/L

9
9

7
7
7
6
6
6
6
6
6
6
6


•
•

•
*
•
•
•
•
•
•
•
•
•


7
7

0
0
0
8
4
6
4
2
4
2
2
11EPALES

00300
00

MG/L

9.7
9.7

7.0
7.0
7.0
6.8
6.4
6.6
6.4
6.2
6.4
6.2
6.2

00077
TRANSP
SECCMI
INCHES
48


29



24



24




00094
CNDUCTVY
FIELD
MICROMHO
500
500
485
632
633
626
625
695
696
694
692
415
416
415
410
3
00400
PH

su
e.4o
8.30
8.20
8.30
8.25
8.20
8.20
8.10
8.10
8.10
8.15
8.15
8.10
8.10
8.05

00410
T ALK
CAC03
MG/L
125
125
125
123
120
119
120
121
121
123
120
104
106
103
104
2111202
0024
00610
NH3-N
TOTAL
MG/L
0.040
0.020
0.030
0.030
0.040
0.060
0.030
0.030
0.030
0.020
0.020
0.090
0.090
0.090
0.080
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.400
0.300
0.300
0.500
0.300
0.600
0.300
0.300
0.300
0.300
0.200
0.600
0.600
0.600
0.600
00630
N02&N03
N-TOTAL
MG/L
0.070
0.060
0.080
0.040
0.040
0.060
0.040
0.020K
0.020K
0.020K
0.020K
0.080
0.090
0.080
0.080
00671
PHOS-OIS
ORTHO
MG/L P
0.010
O.OOS
0.004
0.006
0.006
0.009
0.006
0.004
0.004
0.002
0.005
0.012
0.01S
0.014
0.011

DATE
FROM
TO
74/03/07


74/05/16



74/08/06



74/10/29





TIME DEPTH
OF
DAY FEET
17 20 0000
17 20 0005
17 20 0020
11 15 0000
11 15 0005
11 15 0015
11 15 0020
14 30 0000
14 30 0005
14 30 0010
14 30 0013
14 20 0000
14 20 0003
14 20 0005
14 ?0 0015
,14 20 0027
00665
PHOS-TOT

MG/L P
0.013
0.016
0.024
0.023
0.021
0.034
0.02*
0.019
0.020
0.020
0.028
0.036

0.039
0.039
0.040
32217 00031
CHLRPHYL INCDT LT
A REMNING
UG/L PERCENT
0.6


1.4



10.6



3.8
5.0
1.0


          K VALUE KNOWN TO 8E
          LESS THAN INDICATED

-------
STORET RETRIEVAL DATE 76/02/U
                                                                   480503
                                                                  31  50  05.0  099  05  58.0
                                                                  BrtOwNrfOOO I '.KE
                                                                  4d049    TEXAS

DATE
FROM
TO
74/03/08

74/05/16


74/08/06

74/10/29



TIME DEPTH
OF
DAY FEET
09 20 0000
09 20 0007
11 25 0000
11 ?5 0005
11 25 0009
15 05 0000
15 05 OOOS
14 00 0000
14 00 0005
14 00 0010
00010
WATER
TEMP
CENT
18.1
17.6
25.9
25.8
25.5
25.0
24.3
18.6
18.6
18.4
11EPALES

00300
DO

MG/L

8.1

6.2
6.2

6.0
5.8
6.0


00077
TRANSP
SECCHI
INCHES
18

5


11

12



00094
CNOUCTVY
FIELD
MICROMHO
548
542
634
634
630
681
669
312
322
318
3
00400
PH

SU
8.30
8.20
8.20
8.10
8.10
8.30
8.20
8.05
8.00


00410
T ALK
CAC03
MG/L
129
131
117
118
119
122
125
105
104

211
0011
00610
NH3-N
TOTAL
MG/L
0.040
0.040
0.060
0.060
0.050
0.020
0.040
0.090
0.080

1202


FEET DEPTH
00625
TOT KJEL
N
MG/L
0.600
0.600
0.900
0.800
0.800
0.400
0.300
0.800
0.700

00630
N02«»N03
N-TOTAL
MG/L
0.050
0.080
0.080
0.080
0.060
0.020K
0.020
0.140
0.130

00671
PriOS-UIS
ORTriO
MG/L P
0.015
0.005
0.007
0.009
0.008
0.005
0.004
0.029
0.032

DATE
FROM
TO
74/03/08

74/05/16


74/08/06

74/10/29



00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
OF A REMNING
DAY FEET
09
09
11
11
11
15
15
14
14
14
14
20
20
25
25
25
05
05
00
00
00
00
0000
0007
0000
0005
0009
0000
0005
0000
0001
0002
0005
MG/L P UG/L PERCENT
0
0
0
0
0
0
0
0


0
.042 2.2
.071
.079 4.6
.083
.076
.058 12.9
.074
.079 8.8


.080








5.0
1*0

         K  VALUE KNOWN  TO  8E
         LESS  THAN  INDICATED

-------
STORET RETRIEVAL DATE ?
                                                                  490504
                                                                 31 52 00.0 099 01 19.0
                                                                 46049   TEXAS

DATE
FROM
TO
74/03/08


74/05/16


74/08/06


74/10/29






TIME
OF
DAY
10 00
10 00
10 00
12 00
12 00
12 00
09 40
09 40
09 40
15 10
15 10
15 10
15 10
15 10
15 10

DEPTH

FEET
0000
0005
0017
0000
0005
0017
0000
0010
0019
0000
0005
0015
0017
0024
0030
00010
WATER
TEMP
CENT
16.2
16.2
16.0
25.4
25.3
25.3
26.1
26.2
26.2
19.4
19.4
19.4
19.4
19.0
18.9
                                00300     00077     00094
                                 DO      TRANSP   CNOUCTVY
                                         SECCHI   FIELD
                                MG/L     INCHES   MICROMHO
                                   8.8
                                   9.3

                                   7.6
                                   7.2
                                   6.0
                                   6.0
                                   5.8
                                   7.0
                                   7.0
                                   7.4
                                   6.8
30


25


27


30
520
519
512
655
653
650
691
688
688
412
413
414
413
409
410
11EPALES
3
00400
PH

SU
8.20
8.25
8.25
8.30
8.30
8.30
8.10
8.05
8. OS
8.15
8.10
8.10

00410
T ALK
CAC03
MG/L
127
127
127
120
121
119
116
116
117
99
97
98
2111203
0021
00610
NH3-N
TOTAL
MG/L
0.030
0.020
0.020
0.040
0.020
0.030
0.070
0.050
0.040
0.060
0.060
0.060
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.600
0.500
0.400
0.700
0.500
0.500
0.500
0.300
0.400
0.400
0.400
0.400
00630
N02&N03
N-TOTAL
MG/L
0.050
0.050
0.050
0.040
0.030
0.040
0.060
0.030
0.020
0.060
0.060
0.050
00671
PHOS-OIS
ORTHO
MG/L P
0.008
0.004
0.006
0.005
0.005
0.005
0.013
0.006
0.006
0.012
0.021
0.019
                  8.00
99
0.070
                                      0.400
                           0.050
                                                                                                                 0.021
DATE
FROM
TO
74/03/08


74/05/16


74/08/06


74/10/29




00665 32217 00031
TIME DEPTH PMOS-TOT CHLRPHYL INCOT LT
OF A REMNING
DAY FEET
10
10
10
12
12
12
09
09
09
15
15
15
15
15
00
00
00
00
00
00
40
40
40
10
10
10
10
10
0000
0005
0017
0000
0005
0017
0000
0010
0019
0000
0003
0005
0015
0030
MG/L P UG/L • PERCENT
0.029 1.0
0.024
0.023
0.022 4.7
0.019
0.017
0.038 7.5
0.024
0.017
0.035 4.6

0.036
0.035
0.037










5.0
1.0



-------
  APPENDIX E
TRIBUTARY DATA

-------
STORE1  REVRIEVAL DATE 76/03/10
  DATE   TIME DEPTH N02J.N03
  FROM    OF
   TO    DAY  FEET
74/09/07
74/10/05
74/12/07
75/03/01
75/04/05
75/04/21
75/05/17
75/06/07
75/07/26
10
11
10
10
11
15
11
14
11
30
40
00
00
35
30
05
30
30
                                                                  43Q5A1
                                                                 31 50 20.0 099 00  06.0 4
                                                                 PECAN bAlT J
                                                                 46029    f.5 OWENS
                                                                 0/dROwNWOOO L4KE
                                                                 BANK SAMPLE 1000 FT DOWNSTREAM  FRUM  DAM
                                                                 11EPALES              211120'*
                                                                  0000 FEET  DE°TH  CLASS  00
0630
!t,N03
OTAL
IG/L
0.028
0.272
0.152
0.075
0.065
0.065
0.030
0.012
0.010
00625
TOT KJEL
N
MG/L
0.850
0.800
0.500
0.650
0.750
0.400
0.400
0.700
0.750
00610
NH3-N
TOTAL
MG/L
0.040
0.015
0.028
0.043
0.040
0.030
0.020
0.032
0.020
00671
PnOS-DIS
ORTHO
MG/L P
0.005
0.020
0.025
0.005
0.005K
0.010
0.005K
0.005K
0.005
00665
PHOS-TOT

MG/L P
0.040
0.090
0.030
0.020
0.020
0.020
0.010K
0.010K
0.040
  K VALUE KNOWN TO BE
  LESS THAN INDICATED

-------
SlCMtT RETRIEVAL DATE 76/03/10
  DATE   TIME DEPTH N02&N03
  FKOM    OF
   TO    DAY  FEET
74/10/05
74/11/02
74/12/07
75/01/04
75/02/01
75/03/01
75/04/05
75/05/05
75/05/17
75/07/26
10 15
10 30
10 40
10 00
10 30
10 00
10 00
15 30
09 40
09 45
                                                                  31  57  12.0  099  03  55.0  4
                                                                  PECAN  BAYC.,
                                                                  48       7.5  BrrtDb
                                                                  T/dRO*N*000  LAKE
                                                                  BANK SAMPLE  OFF SEC RD  1.7 Ml Nri OF BYriD
                                                                  11EPALES             2111204
                                                                   COOO  FEET   DEPTH   CLASS 00
Ob30
'J.N03
OTAL
IG/L
0.104
0.136
0.384
0.400
0.271
0.330
O.OttS
0.015
0.145
0.290
00625
TOT KJEL
N
MG/L
0.800
1.000
0.800
0.500
4.000
0.850
0.650
0.650
0.750
2.100
00610
NH3-N
TOTAL
MG/L
0.005
0.035
0.016
0.016
0.072
0.030
0.045
0.020
0.030
0.105
00671
PHOS-DIS
OP.THO
MG/L P
0.010
0.010
0.018
0.005
0.032
0.005
0.005K
0.010
0.010
0.015
00665
PriOS-TOT

MG/L P
0.060
0.020
0.020
0.020

0.020
0.020
0.040
0.050

 K  VALUE KNOWN  TO  BE
 LESS  THAN  INDICATED

-------
STORE! RETRIEVAL DATE. 76/03/10
                                                                   430Sdl
                                                                  31  49 40.0 099 00 06.0 4
                                                                  dROWNrfOOO wQUEOUCT
                                                                  46       7.b OrftNS
                                                                  0/bRO*fJ*OOD LAKE
                                                                  SEC RJ 212i> BRDG
                                                                  11EPALES
                                                                   0000 FEET  DEPTH
 MI E OF SEC RO 2632
  211120'+
CLASS 00
DATE
FROM
TO
74/09/07
74/10/05
74/11/02
74/12/07
75/01/04
75/02/01
75/03/01
75/04/05
75/04/21
75/05/05
75/05/17
75/06/07
75/07/26
TIME i
OF
DAY 1
10 50
11 00
10 00
10 20
10 00
10 00
09 00
11 15
15 00
16 30
10 50
15 15
11 00
              FEET
00b30
N02&N03
N-TOTAL
MG/L
0.012
0.176
0.216
0.176
0.136
0.088
0.080
0.070
0.055
0.035
0.035
0.005
0.005
00625
TOT KJEL
N
MG/L
0.600
1.000
0.500
0.800
0.600
0.900
0.500
0.600
0.350
0.500
0.550
0.450
0.400
00610
NH3-N
TOTAL
MG/L
0.020
0.015
0.050
0.024
0.024
0.032
0.020
0.025
0.040
0.020
0.030
0.010
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.015
0.015
0.020
0.005
0.008K
0.005K
0.005K
0.005
0.005
0.005K
0.005K
0.005
00665
PHOS-TOT

MG/L P
0.025K
0.045
0.040
0.030
0.020
0.020
0.010
0.020
0.020
0.010K
0.010K
0.010K
0.020
  K VALUE KNOWN TO BE
  LESS THAN INDICATED

-------
STOKET RETRIEVAL LJATE 76/OJ/10
                      00630
  DATE   TIME DEPTH N02&N03
  FROM    OF        N-TOTAL
   TO    DAY  FEET    MG/L
74/10/05
74/11/02
74/12/07
75/01/04
75/02/01
75/03/01
75/04/05
75/04/21
75/05/05
75/05/17
75/06/07
75/07/26
10 00
09 45
13 00
09 30
09 30
09 35
10 45
14 30
16 00
10 15
1<» 15
10 30
0.016
0.104
0.160
0.528
0.384
0.375
0.005
0.010
0.005
0.200
0.020
0.165
0.600
0.600
1.300
1.000
1.400
0.850
0.700
0.525
0.800
0.650
1.100
0.775
                                                                  40OSC1
                                                                 31 51 15.0 099 11 50.0 4
                                                                 JIM NED OtEK
                                                                 48      7.5 THKIFTY
                                                                 T/8«0*INWOOQ LAKE
                                                                 AT BLACKWlLL XING 1.8 M S* FAIRVIE* CMTY
                                                                 11EPALES             2111204
                                                                  0000 FEET  DEPTh  CLASS 00
                                                                                                   0
00625
TOT KJEL
N
MG/L
00610
NH3-N
TOTAL
MG/L
00671
PHOS-OIS
ORTHO
MG/L P
00665
PHOS-TOT

MG/L P
0.010
0.050
0.096
0.032
0.072
0.025
0.025
0.030
0.015
0.040
0.020
0.025
0.005
0.015
0.050
0.080
0.072
0.045
0.010
0.010
0.015
0.040
0.010
0.020
0.040
0.130
0.060
0.110

0.100
0.010
0.070
0.040
0.100
0.090
0.140

-------
 STQRET
            -,AL DATE 76/03/10
                                                     480501
                                                    31  55  25.0  099 02 10.0
                                                    HOG  CHEEK
                                                    48       7.5 BrRDS
                                                    T/3ROrfNWOOD LAKE
                                                    SEC  RD 227j BRDG .5 MI
                                                    11EPALES
                                                     0000  FEET   DEPTH
                                                                                         E  OF  SEC RD 2259
                                                                                       2111204
                                                                                     CLASS  00
  DATE   t
  FROM
   TO    \Jt

74/12/07 ii  j5
75/02/01 If,  15
75/04/21 I,  10
75/05/05 1<;  ,0
75/05/17 0'«  ?0
75/06/07 1|  ^5
75/07/26 Ov  oo
DEPTH
00630
N02S.N03
N-TOTAL
MG/L
0.008
0.064
0.005
0.005
0.005
0.010
0.010
00625
TOT KJEL
N
MG/L
0.700
1.700
0.600
1.550
0.900
1.550
0.750
00610
NH3-N
TOTAL
MG/L
0.024
0.040
0.030
0.020
0.017
0.025
0.050
00671
PHOS-DIS
ORTHO
MG/L P
0.035
0.032
0.005K
0.030
0.011
0.015
0.015
00665
PriOS-TOT

MG/L P
0.040

0.040
0.100
0.050
0.090
0.060
  rcoT        TO 8E
 LESS THAN INDICATED

-------
STOHEf KETKItVAL &ATt 76/23/10
                                                                  31  55  10oO  099  00  30,0  4
                                                                  ROuoh  BRANCH
                                                                  48       7o5 6Y"US
                                                                  T/b^GoMriOCin LAKE
                                                                  bEC PO 327., rrfGG  2.5 M  a OF  SEC HD 225S
                                                                  HEPALES              2111204
                                                                  0000  FEET  DEPTH   CLASS 00

DATE
FROH
TO
74/10/05
74/11/02
74/12/07
75/01/04
75/02/01
75/03/01
75/04/05
75/05/05
75/05/17

TIME DEPTH
OF
DAY FEET
09 50
10 00
10 00
09 40
09 45
09 50
09 30
15 00
09 15
00630
N02&N03
N-TOTAL
MG/L
0.024
0.016
0,008
0.040
0.096
0.015
0.005
0.015
0,005
00625
TOT KJEL
N
MG/L
0.500
0.400
0.800
0.700
2,200
0.500
0.750
2.700
0.350
00610
NH3-N '
TOTAL
MG/L
OoOlO
0 = 020
0.016
0.016
0.032
0.025
0.030
0.065
0.010
00671
PHOS-DIS
OkTHO
MG/L P
OoOOSK
OoOlS
0,005
0.010
0.032
OoOOSK
0.005K
0.020
0.005
00665
PHOS-TOT

MG/L P
Oo020
OoOSO
OoOlOK
OoOlO

0 = 010
OoOlO
0.035
0,020
  K VALUE KNOWN TO BE
  LESS THAN INDICATED

-------