U.S. ENVIRONMENTAL PROTECTION AGENCY
           NATIONAL EUTROPHICATION  SURVEY
                    WORKING PAPER SERIES
                                          ON
                                     LAME BLOOMINGTON
                                       MdfAN COUNTY
                                        ILLINOIS
                                       EPA REGION V
                                    WORKING PAPER No, 296
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
                             and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
 699-440

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                                    ON
                             LAIC BLDOMINGTON
                               McLEAN COUNTY
                                 ILLINOIS
                               EPA REGION V
                           WORKING PAPER No, 296
      WITH  THE COOPERATION OF THE
ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
               AND THE
        ILLINOIS NATIONAL GUARD
              JUNE, 1975
                                                        776

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                               CONTENTS
                                                          Page
  Foreword                                                 ii
  List of Illinois  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                             5
 IV.   Nutrient Loadings                                      9
  V.   Literature Reviewed                                  14
 VI.   Appendices                                           15

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

OBJECTIVES

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

ANALYTIC APPROACH

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

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

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

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

LAKE ANALYSIS

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

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    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.

ACKNOWLEDGMENT

    The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental  Protection Agency)
expresses sincere appreciation to the Illinois Environmental
Protection Agency for professional involvement and to the
Illinois National Guard for conducting the tributary sampling
phase of the Survey.

    Dr. Richard H. Briceland, Director of the Illinois Environ-
mental Protection Agency; and Ronald M. Barganz, State Survey
Coordinator, and John J. Forneris, Manager of Region III, Field
Operations Section of the Division of Water Pollution Control,
provided invaluable lake documentation and counsel during the
Survey, reviewed the preliminary reports, and provided critiques
most useful  in the preparation of this Working Paper series.

    Major General Harold R.  Patton, the Adjutant General  of
Illinois, and Project Officer Colonel Daniel L.  Fane, who directed
the volunteer efforts of the Illinois National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.

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                                iv
                  NATIONAL EUTROPHICATION  SURVEY

                            STUDY LAKES
                         STATE OF ILLINOIS
LAKE NAME

Baldwin
Bloomington
Carlyle
Cedar
Charleston
Coffeen
Crab Orchard
Decatur
DePue
East Loon
Fox
Grass
Highland Silver
Holiday
Horseshoe
Long
Lou Yaeger
Marie
Old Ben Mine
Pistakee
Raccoon
Rend
Sangchris
Shelbyville
Slocum
Springfield
Storey
Vandalia
Vermilion
Wee Ma Tuk
Wonder
COUNTY

Randolph
McLean
Bond, Clinton,  Fayette
Lake
Coles
Montgomery
Jackson, Williamson
Ma con
Bureau
Lake
Lake
Lake
Madison
LaSalle
Madison ,
Lake
Montgomery
Lake
Franklin
Lake, McHenry
Marion
Franklin, Jefferson
Christian
Moultrie, Shelby
Lake
Sangamon
Knox
Fayette
Vermilion
Fulton
McHenry

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LAKE  BLOOMINGTON
     Tributary Sampling Site
  X  Lake Sampling Site
     Sewage Treatment Plant
     Drainage Area Boundary
       Map Location

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                         LAKE BLOOMINGTON
                          STORE! NO. 1703
I.  CONCLUSIONS
    A.  Trophic Condition:
            Survey data indicate that Lake Bloomington is eutrophic.
        It ranked sixteenth in overall trophic quality when the 31
        Illinois lakes sampled in 1973 were compared using an  index
        of six parameters*.  Three of the lakes had less  and one had
        the same median total phosphorus, nine had less and one had
        the same median dissolved phosphorus, all  had less median
        inorganic nitrogen, 16 had less mean chlorophyll  a_t and six
        had greater mean Secchi  disc transparency.  Depression of
        dissolved oxygen with depth occurred at both sampling  stations
        in August and at station 1 in October, 1973.
            Survey limnologists  reported emergent aquatic vegetation
        along the shorelines near station 2 and noted a slight blue-
        green algal bloom in August.  Reportedly,  severe  algal  blooms
        have not occurred in Lake Bloomington (Ferguson,  1975).
    B.  Rate-Limiting Nutrient:
            The algal assay results and mean lake N/P ratios of over
        140/1 indicate that the  lake is phosphorus limited.
* See Appendix A.

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C.  Nutrient Controllability:
        1.  Point sources—During the sampling year, point sources
    accounted for only 5% of the total  phosphorus  load to the lake.
    The East Bay Camp-Conference Center wastewater treatment plant
    contributed 3% of the phosphorus load,  and the Towanda Elemen-
    tary School was estimated to have contributed  about 1%.  The
    owners of the East Bay Camp-Conference  Center  plan to install
    phosphorus removal facilities in the near future (Stieferman,
    1975).
        The present total phosphorus loading rate  of 2.17 g/m2/yr
    is nearly three times the rate proposed by Vollenweider (Vollen-
    weider and Dillon, 1974) as a eutrophic rate  (see page 13).
    Even if all known point source phosphorus loads were eliminated,
    the loading rate would still be more than 2h times the eutrophic
    rate; however, since Lake Bloomington is phosphorus limited, any
    reduction of phosphorus input should result in at least some
    improvement in the trophic condition of the lake.
        2.  Non-point sources—It is calculated that about 94% of
    the total phosphorus load to Lake Bloomington  was contributed
    by non-point sources during the sampling year. Money Creek
    contributed nearly 59% of the total load.
        Although the phosphorus export rate of Money Creek does not
    appear to be excessive (see page 12), the phosphorus contribution

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of this stream alone would result  in  a  loading  rate more than
1% times the eutrophic rate.
    It is noted that agricultural  operations  are estimated to
involve about 60% of the Money Creek  drainage area  (Wang and
Evans, 1970).

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II.   LAKE AND DRAINAGE BASIN  CHARACTERISTICS1"
     A.   Lake Morphometry  :
         1.   Surface area:  1.97  kilometers2.
         2.   Mean depth:   5.0 meters.
         3.   Maximum depth:   10.7 meters.
         4.   Volume:  9.850 x 106 m3.
         5.   Mean hydraulic retention time:  104 days.
     B.   Tributary and Outlet:
         (See Appendix C  for  flow data)
         1.   Tributaries  -
                                              Drainage       Mean flow
             Name                             area  (km2)*    (m3/sec)*
             Money Creek                         126.9,          0.8
             Minor tributaries  &
              immediate drainage  -               _51.1           0.3
                          Total                  178.0           1.1
         2.   Outlets -
             Bloomington  municipal  usage           -             0.3
             Money Creek                         180.0           0.8
                                 Total          180.0**         1.1
     C.   Precipitation***:
         1.   Year of sampling:  108.6 centimeters.
         2.   Mean annual:   92.1 centimeters.
 t Table of metric conversions—Appendix  B.
 ft Forneris, 1973.
 * 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 Bloomington was sampled three times  during the open-water
  season of 1973 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 a number of depths  at  each
  station (see map, page v).   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  11.0 meters at station 1  and 5.2 meters at  station 2.
      The results obtained are presented in  full  in Appendix D  and
  are summarized in the following table.

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PARAMETER

TEMP (C)

DISS OXY (MG/L)

CNDCTVY (MCROMO)

PH (STAND UNITS)

TOT ALK (MG/L)

TOT P (MG/L)

ORTHO P (MG/L)

N02*N03 (MG/L)

AMMONIA (MG/L)

KJEL N  (MG/L)

INORG N (MG/L)

TOTAL N (MG/L)

CHLRPYL A (OG/L)

SECCHI  (METERS)
                             A. SUMMARY OF PHYSICAL AND


                             1ST SAMPLING  ( 5/11/73)

                                   2 SITES
CHEMICAL CHARACTERISTICS FOR
 STORET CODE 1703
                                                                                      LAKE BLOOMINGTON
           2ND SAMPLING ( 8/ 9/73)

                 2 SITES
3RD SAMPLING (10/17/73)

      2 SITES
RANGE
15.5
8.1
460.
8.2
157.
0.086
0.059
6.090
0.040
0.300
6.150
6.390
8.1
0.5
- 17.4
9.6
- 510.
8.3
- 174.
- 0.110
- 0.066
- 8.260
- 0.090
- 0.500
- 8.300
- 8.760
- 13.9
0.5
MEAN
16.4
9.0
473.
8.3
162.
0.093
O.Cbb
7.476
0.057
0.429
7.533
7.904
11.0
0.5
MEDIAN
16.3
9.0
460.
8.3
160.
0.090
0.066
7.690
0.060
0.400
7.780
8.090
11.0
0.5
RANGE
16.4
0.4
424.
7.4
163.
0.026
0.004
0.690
0.060
0.900
2.490
3.990
10.1
1.0
- 28.7
9.0
- 518.
8.5
- 242.
- 0.210
- 0.095
- 6.880
- 1.800
- 3.300
- 7.000
- 8.130
- 11.6
1.8
MEAN
25.1
4.9
484.
8.0
184.
0.063
0.019
5.692
0.330
1.362
6.022
7.055
10.8
1.4
MEDIAN
27.0
5.7
495.
7.9
175.
0.039
0.007
6.815
0.120
1.100
6.905
7.790
10.8
1.4
RANGE
15.3
0.2
378.
7.5
151.
0.033
0.013
0.080
0.050
0.700
2.730
3.380
56.0
0.6
- 19.1
8.2
- 426.
8.5
- 258.
- 0.059
- 0.035
- 2.720
- 3.210
- 4.100
- 3.290
- 4.180
- 57.5
1.0
MEAN
18.6
6.3
389.
8.3
167.
0.044
0.020
2.388
0.483
1.190
2.871
3.578
56.8
0.8
MEDIAN
18.9
7.4
386.
8.4
158.
0.045
0.019
2.685
0.165
0.850
2.855
3.540
56.8
0.8

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B.  Biological  characteristics:

    1.   Phytoplankton -
        Sampling
        Date

        05/11/73
        08/09/73
        10/17/73
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Stephanodiscus sp.
Meloslra sp.
Flagellates
Cryptomonas sp.
Lunate cells
Other genera
Total
Microcystis sp.
Melosira s£.
Synedra sp.
Centric diatoms
Euglena sp.
Other genera
Total
Closterium sp.
Cyclotella sp.
Aphanizomenon (?) sp
Cryptomonas sp.
Coelastrum sj>.
Algal units
per ml	
   1
                                Other  genera
                                         Total
   2,846

   2,549
     913
     266
     228
     190
     724

   4,870

   7,747
     384
     332
     179
     128
     206

   8,976

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                             8
    2.  Chlorophyll a^ -
Sampling
Date
05/11/73
08/09/73
10/17/73
Station
Number
01
02
01
02
01
02
                                                     Chlorophyll a^
                                                     (yg/1)

                                                          8.1
                                                         13.9

                                                         10.1
                                                         11.6

                                                         56.0
                                                         57.5
C.  Limiting Nutrient Study:

    1.  Filtered and nutrient spiked -
        Spike (mg/1)

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

   0.020
   0.070
   0.070
   0.020
Inorganic N    Maximum yield
Cone, (mg/1)    (mg/1-dry  wt.)
   7.470
   7.470
   8.470
   8.470
 3.3
26.4
25.3
 3.5
    2.  Discussion -

            The control yield of the assay alga,  Selenastrum  capri-

        cornutum. indicates that the potential  primary productivity

        of Lake Bloomington was moderately high at the time the

        sample was collected (05/11/73).   Also, the results indicate

        the lake was phosphorus limited at that time.   Note that  the

        addition of orthophosphorus alone resulted in  a greatly

        increased yield while the addition of only nitrogen did hot.

        This conclusion is supported by the very high  mean N/P ratios

        measured in the lake at each sampling time (116/1  in  May,

        317/1 in August, and 144/1 in October).

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IV.   NUTRIENT LOADINGS
     (See Appendix E  for data)
     For the determination  of nutrient loadings, the Illinois National
 Guard collected monthly near-surface grab samples from each of the
 tributary sites indicated  on the map (page v), except for the high
 runoff months of February  and  March when two samples were collected.
 Sampling was begun in  June,  1973,  and was completed in May, 1974.
     Through an interagency agreement, stream flow estimates for the
 year of sampling and a "normalized" or average year were provided by
 the Illinois District  Office of the U.S. Geological Survey for the
 tributary sites nearest the  lake.
     In this report,  nutrient loads for sampled tributaries were deter-
 mined by using a modification  of a U.S. Geological Survey computer
 program for calculating stream loadings*.  Nutrient loads shown are
 those measured minus point-source  loads, 1f any.
     Intakes for the  Bloomington municipal water supply are located
 near lake sampling station 1 at depths of six and 11 meters (Hersch,
 1975).  In estimating  nutrient loads in the water removed by the city,
 the mean flow and the  mean of  all  lake nutrient concentrations measured
 at  or below the six-meter  depth at station 1 were used.
     Nutrient loads for unsampled "minor tributaries and immediate
 drainage" ("II" of U.S.G.S.) were estimated using the means of the
 nutrient loads, in kg/km2/year, at nearby Decatur Lake tributary
 * See  Working  Paper No.  175.

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                                 10
stations E-l, F-l, G-l, and H-l  and multiplying  the means  by the ZZ
area in km2.  The Decatur Lake tributary loads were used because no
unimpacted tributaries to Lake Bloomington were  sampled, and the
watersheds of the two lakes are similar.
    The operator of the East Bay Camp-Conference Center wastewater
treatment plant provided monthly effluent samples and  corresponding
flow data.  The Towanda Elementary School did not participate  in
the Survey, and nutrient loads were estimated at 1.134 kg  P and 3.401
kg N/capita/year.
    A.  Waste Sources:
        1.  Known muncipal -
        Name
         Conference
         Center
        Towanda El em.
         School
        2.  Known industrial - None
Pop.
Served
198*
36**
Mean Flow
Treatment (m3/d)
sand filter
act. sludge
49.5
13.6***
Receiving
Water
Lake Bloomington
Money Creek
* Population based on an average of 475 people June through August, and
  110 people September through May (Detrich,  1973).
** Average population equivalent based on 200+ students  for 8  hours/day,
   5 days/week, 9 months/year (Blake, 1975).
*** Estimated at 0.3785 m5/capita/day.

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                                 11
    B.  Annual Total Phosphorus Loading - Average Year:
        1.  Inputs -
                                              kg P/          % of
            Source                            yr             total
            a.  Tributaries (non-point load) -
                Money Creek                   2,500           58.6
            b.  Minor tributaries & immediate
                 drainage (non-point load) -  1,535           35.9
            c.  Known municipal STP's -
                E. Bay Camp-Conf. Ctr.          130            3.0
                Towanda El em. School             40            0.9
            d.  Septic tanks* -                  30            0.8
            e.  Known industrial - None
            f.  Direct precipitation** -         35    -        0.8
                         Total                4»270          100.0
        2.  Outputs -
            Lake outlets - Money Creek        2,075
                           Bloomington Mun.
                            Water Supply        860
                                 Total        2,935
        3.  Net annual P accumulation - 1,335 kg.
* Estimate based on 100 shoreline dwellings and two camps; see Working
  Paper No. 175.
** See Working Paper Wo. 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) -
                Money Creek                   280,005         81.4
            b.  Minor tributaries & immediate
                 drainage  (non-point load) -   59,125         17.2
            c.  Known municipal STP's -
                E. Bay Camp-Conf. Ctr.            370          0.1
                Towanda Elem. School              120         <0.1
            d.  Septic tanks* -                 1,135          0.7
            e.  Known industrial - None
            f.  Direct precipitation** -        2,125          0.6
                         Total                342,880        100.0
        2.  Outputs -
            Lake outlets - Money Creek        325,200
                           Bloomington Mun.
                             Water Supply       51,595
                                 Total        376,795
        3.  Net annual N loss - 33,915 kg.
    D.  Mean Annual Non-point Nutrient Export by Subdrainage Area:
        Tributary                             kg P/km2/yr    kg N/km2/yr
        Money Creek                                20            2,207

* Estimate based on 100 shoreline dwellings and two camps; see Working
  Paper No. 175.
** See Working Paper No. 175.

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                                 13
    E.  Yearly Loading Rates:
            In the following table, the existing phosphorus loading
        rates are compared to those proposed by Vollenweider (Vollen-
        weider and Dillon, 1974).  Essentially, his "dangerous"  rate
        is the rate at which the receiving water would become eutrophic
        or remain eutrophic; his "permissible" rate is that which would
        result in the receiving water remaining oligotrophic or  becoming
        oligotrophic if morphometry permitted.  A mesotrophic rate 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              2.17      0.68         174.1      loss*

        Vollenweider loading rates for phosphorus
         (g/m2/yr) based on mean depth and mean
         hydraulic retention time of Lake Bloomington:
            "Dangerous"  (eutrophic rate)       0.80
            "Permissible"  (oligotrophic  rate)  0.40
* There was an apparent loss of nitrogen during the sampling year.  This
  may have been due to nitrogen fixation in the lake,  solubilization  of
  previously sedimented nitrogen, recharge with nitrogen-rich  ground  water,
  or unknown and unsampled point sources discharging directly  to  the  lake.
  Whatever the cause, a similar nitrogen loss  has  occurred  at  Shagawa Lake,
  Minnesota, which has been intensively studied by EPA's  National Eutrophica-
  tion and Lake Restoration Branch (Malueg et  al., 1975).

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                                 14
V.  LITERATURE REVIEWED

    Blake, Robert, 1975.   Personal  communication  (Towanda Elem. School
        waste treatment facilities).   Distr.  5 Adm. Off., Normal.

    Detrich, William B.,  1973.   Treatment  plant questionnaire  (East
        Bay Camp-Conference Center  STP).   Hudson.

    Ferguson, Donald W.,  1975.   Personal communication  (occurrence and
        severity of algal  blooms).  City Engineering & Water Dept.,
        Bloomington.

    Forneris, John J.,  1973.   Personal  communication (lake morphometry).
        IL Env.  Prot. Agency,  Springfield.

    Hersch, John, 1975.  Personal communication (municipal use of Lake
        Bloomington water; shoreline  development).  City Water Dept.,
        Bloomington.

    Kothandaraman, V.,  and Ralph L. Evans,  1971.  Analysis of variations
        in dissolved oxygen in  an impoundment in  central Illinois.  Water
        Resources Research, vol. 7, no. 4,  pp. 1037-1044.

    	,  1970.   Annual  temperature  variations in an impound-
        ment in  central Illinois.   Jour. AWWA, vol. 62, no. 10, pp. 639-642.

    Malueg, Kenneth W., D. Phillips Larsen, Donald W. Schults, and Howard
        T. Mercier; 1975.   A six-year water,  phosphorus, and nitrogen
        budget for Shagawa Lake, Minnesota.   Jour. Environ. Qua!., vol. 4,
        no. 2, pp. 236-242.

    Stieferman,  Michael J., 1975.   Personal communication (phosphorus
        removal  at East Bay Camp-Conference Center).  Warren & Van Praag,
        Inc., Decatur.

    Sullivan, William T.,  1967.  Chemical  composition of the mud-water
        interface zone, with the description  of an interface sampling
        device.   Proc.  Tenth Conf.  on Great Lakes Research, pp. 390-403.

    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.

    Wang,  Wun-Cheng, and Ralph  L. Evans, 1970.  Nutrients and quality in
        impounded water.   Jour.  AWWA, vol.  62, no. 8, pp. 510-514.

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                                 15
VI.   APPENDICES
                            APPENDIX A
                           LAKE RANKINGS

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LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE
1703
1706
1708
1711
1712
1714
1735
1726
1727
1733
1735
1739
mo
1742
1748
1750
1751
1752
1753
1754
1755
175b
1757
1758
1759
1761
1762
1763
LAKE NAME
LAKE BLOOMINGTON
LAKE CARLYLE
LAKE CHARLESTON
COFFEEM LAKE
CRAB ORCHARD LAKE
LAKE OECATUR
LONG LAKE
LAKE LOU YAEGER
LAKE MARIE
PISTAKEE LAKE
REND LAKE
LAKE SHELBYVILLE
SILVER LAKE (HIGHLAND)
LAKE SPRINGFIELD
VERMILION LAKE
WONDER LAKE
LAKE STORY
OEPUE LAKE
LAKE SANGCnRIS
LAKE HOLIDAY
FOX LAKE
GRASS LAKE
EAST LOON LAKE
SLOCUM LAKE
CEDAR LAKE
LAKE WEMATUK
RACCOON LAKE
BALDWIN LAKE
MEDIAN
TOTAL P
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
0
0
.050
.084
.160
.032
.082
.129
.704
.186
.098
.203
.071
.062
.226
.109
.109
.426
.072
.438
.050
.167
.219
.301
.076
.865
.029
.069
.106
.044
MEDIAN
INORG N
5.730
1.270
4.680
0.260
0.200
3.750
1.190
1.600
0.370
0.370
0.210
3.290
0.970
3.265
4.695
0.890
2.510
4.050
1.970
3.135
0.375
0.820
0.120
0.200
0.170
1.770
0.310
0.140
500-
MEAN SEC
464
477
490
456
482
479
482
489
467
485
471
461
489
483
481
486
459
490
475
485
486
481
450
487
400
466
484
461
.667
.889
.667
.222
.222
.571
.667
.583
.667
.667
.500
.333
.500
.385
.500
.000
.333
.000
.417
.167
.167
.000
.000
.333
.333
.333
.333
.167
MEAN
CHLORA
26
17
12
• 7
59
43
49
10
39
75
23
17
5
13
31
98
17
58
19
51
63
83
22
221
5
7
19
11
.200
.367
.000
.700
.867
.000
.333
.662
.533
.867
.533
.161
.822
.013
.150
.533
.250
.833
.292
.217
.850
.500
.300
.100
.767
.967
.217
.333
15-
MIN DO
14
11
8
14
13
14
8
11
14
7
12
14
14
10
14
7
14
7
14
7
8
5
14
5
12
14
13
13
.800
.000
.400
.900
.BOO
.500
.800
.400
.700
.000
.700
.800
.800
.800
.200
.800
.800
.600
.500
.200
.800
.900
.900
.800
.800
.500
.BOO
.200
MEDIAN
DISS OHTHO P
0.020
0.032
0.065
0.012
0.013
0.062
0.398
0.076
0.057
0.062
0.012
0.019
0.057
0.059
0.050
0.132
0.021
0.276
0.009
0.04b
0.083
0.093
O.Oln
0.362
0.01J
0.031
0.020
0.007

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

LAKE
CODE  LAKE NAME
      LAKE VANOALIA

1765  OLD BEN MINE RESERVOIR

1766  HORSESHOE LAKE
MEDIAN
TOTAL P
0.116
0.930
0.127
MEDIAN
INOR6 N
0.480
0.205
0.705
500-
MEAN SEC
478.111
478.333
482.833
MEAN
CrILORA
11.27&
31.433
182.250
15-
MIN 00
14.300
11.200
e.doo
MEOUN
0155 OKThO
0.023
0.575
0.018
P




-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES KITH HIGHER VALUES)
LAKE
CODE
1703
1706
1708
1711
1712
1714
1725
172e
1727
1733
1735
1739
1740
1742
1748
1750
1751
1752
175J
1754
1755
1756
1757
1758.
1759
1761
1762
1763
LAKE NAME
LAKE BLOOMINGTON
LAKE CARLYLE
LAKE CHARLESTON
COFFEEN LAKE
CRAB ORCHARD LAKE
LAKE OECATUR
LONG LAKE
LAKE LOU YAEGER
LAKE MARIE
PISTAKEE LAKE
RENO LAKE
LAKE SHELBWILLE
SILVER LAKE (HIGHLAND)
LAKE SPRINGFIELD
VERMILION LAKE
WONDER LAKE
LAKE STORY
DEPUE LAKE
LAKE SANGCHRIS
LAKE HOLIDAY
FOX LAKE
GRASS LAKE
EAST LOON LAKE
SLOCUM LAKE
CEDAR LAKE
LAKE HEMATUK
RACCOON LAKE
BALDWIN LAKE
MEDIAN
TOTAL P
88
63
37
97
67
40
7
30
60
27
77
83
20
53
50
13
73
10
88
33
23
17
70
3
100
80
57
93
( 26)
( 19)
( 11)
( 29)
( 20)
( 12)
( 2)
( 9)
( 18)
( 8)
( 23)
( 25)
( 6)
I 16)
( 15)
( 4)
( 22)
( 3)
( 26)
( 10)
( 7)
( 5)
( 21)
I 1)
( 30)
( 24)
( 17)
( 28)
MEDIAN 500-
INORG N MEAN SEC
0
40
7
77
90
13
43
37
68
68
80
17
47
20
3
50
27
10
30
23
63
53
100
87
93
33
73
97
( 0)
( 12)
I 2)
I 23)
( 27)
( 4)
( 13)
( 11)
( 20)
( 20)
( 24)
( 5)
( 14)
I 6)
( 1)
( 15) '
( 8)
( 3)
I 9)
( 7)
( 19)
( 16)
I 30)
( 26)
( 28)
( 10)
( 22)
( 29)
80
63
0
93
43
53
40
7
73
23
70
83
10
33
47
20
90
3
67
27
17
50
97
13
100
77
30
87
( 24)
( 19)
( 0)
( 28)
( 13)
I 16)
( 12)
( 2)
( 22)
( 7)
( 21)
( 25)
I 3)
( 10)
< 14)
( 6)
( 27)
( 1)
I 20)
( 8)
( 5)
( 15)
( 29)
( 4)
( 30)
( 23)
( 9)
( 26)
MEAN
CHLORA
47
63
77
93
20
33
30
87
37
13
50
70
97
73
43
7
67
23
57
27
17
10
S3
0
100
90
60
dO
( 14)
( 19)
( 23)
( 28)
( 6)
I 10).
( 9)
I 26)
I ID
I 4)
< 15)
I 21)
( 29)
I 22)
( 13)
( 2)
( 20)
( 7)
( 17)
( 8)
I 5)
I 3)
( 16)
( 0)
I 30)
( 27)
I 18)
( 24)
15-
MIN DO
13
63
77
2
42
30
72
57
23
90
53
13
13
67
37
80
13
83
30
87
72
97
2
100
50
30
42
47
( 2)
( 19)
( 23)
( 0)
( 12)
( 8)
I 21)
( 17)
( 7)
( 27)
( 16)
I 2)
( 2)
( 20)
( ID
( 24)
( 2)
( 25)
( 8)
( 26)
( 21)
< 29)
( 0)
( 30)
( 15)
( 8)
( 12)
( It)
MEDIAN
DISS ORTHO P
68
53
27
92
85
32
3
23
42
32
92
73.
42
37
47
13
63
10
97
50
20
17
77
7
85
57
68
100
( 20)
( 16)
( 8)
( 27)
< 25)
( 9)
( 1)
( 7)
( 12)
I 9)
( 27)
( 22)
( 12)
< 11)
( 14)
( 4)
( 19)
( 3)
( 29)
( 15)
< 6)
( 5)
( 23)
( 2)
< -esi
( 17)
( 20)
( 30)
INDE)
NU
296
345
225
454
347
201
195
241
303
253
422
339
229
283
227
183
333
139
369
247
212
244
399
210
sad
367
330
504

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

LAKE
CODE  LAKE NAME

1764  LAKE VANDALIA

1765  OLD BEN MINE RESERVOIR

1766  HORSESHOE LAKE
MEDIAN
TOTAL P
47 ( 14)
0 ( 0)
43 ( 13)
MEDIAN
INORG N
60
83
57
( 18)
( 25)
( 17)
500-
MEAN SEC
60
57
37
( 18)
< 17)
( 11)
MEAN
CHLORA
83
40
3
( 25)
( 12)
( 1)
15-
MIN 00
13 (
60 (
93 (
2)
18)
28)
MEDIAN
OISS OHTHO P
60
0
80
( 18)
( 0)
( 24)
INJtX
NO
323
240
313

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




RANK  LAKE CODE  LAKE NAME               INDEX NO






   1  1759       CEDAR LAKE                 528



   2  1763       BALDWIN LAKE               504



   3  1711       COFFEEN LAKE               45*



   4  1735       REND LAKE                  <»22



   5  1757       EAST LOON LAKE             399



   6  1753       LAKE SANGCHRIS             369



   7  1761       LAKE WEMATUK               367



   8  1712       CRAB ORCHARD LAKE          347



   9  1706       LAKE CARLYLE               345



  10  1739       LAKE SHELBYVlLLE           339



  11  1751       LAKE STORY                 333



  12  1762       RACCOON LAKE               330



  13  1764       LAKE VANDAL IA              323



  14  1766       HORSESHOE LAKE             313



  15  1727       LAKE MARIE                 303



  16  1703       LAKE BLOOMINGTON           296



  17  1742       LAKE SPRINGFIELD           2B3



  18  1733       PISTAKEE LAKE              253



  19  1754       LAKE HOLIDAY               247



  20  1756       GRASS LAKE                 244



  21  1726       LAKE LOU YAEGER            241



  22  1765       OLD BEN MINE RESERVOIR     240



  23  1740       SILVER LAKE  (HIGHLAND)     229



  24  1748       VERMILION LAKE             227



  25  1708       LAKE CHARLESTON            225



  26  1755       FOX LAKE                   212



  27  1758       SLOCUM LAKE                210



  28  1714       LAKE DECATUH               201

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



RANK  LAKE CODE  LAKE NAME               INDEX NO






  29  1725       LONG LAKE                  195



  30  1750       WONDER LAKE                183




  31  1752       DEPUE LAKE                 139

-------
   APPENDIX B
CONVERSIONS 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 FLOW INFORMATION FOR ILLINOIS
                                                                                          10/23/75
LAKE CODE 1703
                   LAKE BLOOMINGTON
          SUB-DRAINAGE
TRIBUTARY  AREA(SO KM)
1703A1
1703A2
1703ZZ
180.0
126.9
 53.6
OF LAKE(SO KM) 180,
JAN
1.17
0.80
0.36
FEB
1.73
1.21
0.52
MAR
2.15
1.50
0.66
.0
APR
2.22
1.54
0.68

MAY
1.75
1.21
0.54




NORMALIZED FLOWS (CMS)
JUN JUL AUG
1.46
1.02
0.44
0.88
0.61
0.27
coo
...
46
32
14

SEP
0.33
0.22
0.10

OCT NOV
0.37 0.53
0.25 0.36
0.12 0.17

DEC MEAN
0.63 1.13
0.43 0.78
0.20 0.35
SUMMARY
'OTAL
;UM OF
DRAINAGE AREA OF LAKE =
SUB-ORAINAGE AREAS =
180.0
180.5


TOTAL
TOTAL
FLOW
FLOW
IN *
OUT =
13.67
13.67

     MEAN MONTHLY FLOWS AND UAILY FLOWS(CMS)
TRIBUTARY   MONTH   YEAR

1703A1
1703A2
1703ZZ
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
73
73
73
73
73
73
73
74
74
74
74
74
73
73
73
73
73
73
73
74
74
74
74
74
73
73
73
73
73
73
73
74
74
74
74
74
                            MEAN FLOW  DAY
5.32
0.23
0.24
0.0
0.0
0.0
0.18
3.34
2.80
3.74
1.81
3.00
3.96
0.74
0.25
0.05
0.25
0.14
1.22
3.54
2.18
2.80
1.47
2.32
1.70
0.31
0.11
0.03
0.12
0.06
0.51
1.47
0.93
1.25
0.65
1.02
3
3
5
9
14
4
1
5
2
2
6
4
3
3
5
9
14
4
1
5
2
2
6
4
3
3
5
9
14
4
1
5
2
2
6
4
                                                   FLOW  DAY
                                                                     FLOW  DAY
                                                                                       FLOW
0.03
1.27
0.03
0.0
0.0
0.0
0.0
0.19
3.88
2.18
2.55
0.68
0.76
1.13
0.37
0.06
1.08
0.11
0.24
1.10
2.92
1.73
1.98
0.68
0.34
0.51
0.20
0.03
0.54
0.05
0.10
0.45
1.27
0.76
0.88
0.34








16
20










16
20










16
20


                                                                     1.39
                                                                     3.03
                                                                     1.19
                                                                     2.32
                                                                     0.51
                                                                     1.02

-------
        APPENDIX D
PHYSICAL and CHEMICAL DATA

-------
STORET RETRIEVAL DATE 75/10/33
                                                                  170301
                                                                 40 39 43.0 088 56 20.0
                                                                 LAKE BLOOMINGTON
                                                                 17113   ILLINOIS

DATE
FROM
TO
73/05/11



TIME
OF
DAY
13 15
13 15
13 15

DEPTH

FEET
0000
0004
0015
13 15 0027
73/08/09






73/10/17





18 10
18 10
18 10
18 10
18 10
18 10
18 10
12 50
12 50
12 50
12 50
12 50
12 50
0000
0005
0010
0015
0020
0025
0030
0000
0005
0010
0020
0030
0036
00010
WATER
TEMP
CENT
16.3
15.9
15.7
15.5
28.3
27.8
27.4
26.1
22.5
17.6
16.4
19.1
19.1
19.1
19.1
18.8
15.3
11EPALES

00300
00

MG/L

9.0
8.7
8.1
8.6


5.0
0.4

0.4

7.2
7.4
7.4
5.2
0.2

00077
TRANSP
SECCHI
INCHES
18



72






38






00094
CNDUCTVY
FIELD
MICROMHO
460
460
460
460
497
492
491
489
434
424
436
388
388
386
386
400
426
3
00400
PH

SU
8.30
8.20
8.20
8.20
8.40


7.90
7.40

7.40
8.40
8.40
8.40
6.10
7.90
7.50

00410
T ALK
CAC03
MG/L
157
157
157
160
163


167
178

242
162
161
159
157
168
258
2111202
0031
00610
NH3-N
TOTAL
MG/L
0.060
0.060
0.070
0.090
0.120


0.070
0.190

1.800
0.180
0.170
0.160
0.240
0.610
3.210
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.500
0.300
0.400
0.400
1.200


0.900
1.000

3.300
0.900
0.900
0.700
0.800
1.300
4.100
00630
N02&N03
N-TOTAL
MG/L
7.460
6.090
6.800
7.690
6.880


6.880
5.540

0.690
2.690
2.720
2.680
2.690
2.290
0.080
00671
PHOS-OIS
ORTKO
MG/L P
0.066
0.066
0.066
0.066
0.004


0.007
0.016

0.09S
0.018
0.018
0.013
0.019
0.021
8.035
DATE
FROM
TO
73/05/11



73/08/09



73/10/17





TIME DEPTH PHOS-TOT
OF
DAY FEET
13
13
13
13
18
18
18
18
12
12
12
12
12
12
15
15
15
15
10
10
10
10
50
50
50
50
50
50
0000
0004
0015
0027
0000
0015
0020
0030
0000
0005
0010
0020
0030
0036
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.086
.092
.095
.110
.026
.029
.036
.210
.034
.033
.035
.037
.044
.059
                      00665     32217
                              CHLRPHYL
                                 A
                                UG/L

                                   8.1
                                  10.1
                                  56.0

-------
STORE! RETRIEVAL DATE 75/10/33
                                                                  170302
                                                                 40 38 50.0 088 55 00.0
                                                                 LAKE BLOOMINGTON
                                                                 17113   ILLINOIS
DATE
FROM
TO
73/05/11


73/08/09




73/10/17




DATE
FROM
TO
73/05/11


73/08/09



73/10/17



TIME DEPTH
OF
DAY FEET
13 45 0000
13 45 0004
13 45 0015
18 40 0000
18 40 0005
18 40 0010
18 40 0015
18 40 0017
13 20 0000
13 20 0005
13 20 0010
13 20 0015

TIME DEPTH
OF
DAY FEET
13 45 0000
13 45 0004
13 45 0015
18 40 0000
18 40 0005
18 40 0015
18 40 0017
13 20 0000
13 20 0005
13 20 0010
13 20 0015
00010
MATER
TEMP
CENT
17.4
17.4
16.8
28.7
28.3
27.7
26.6
24.1
18.9
18.9
18.9
18.8
00665
PHOS-TOT

MG/L P
0.090
0.087
0.088
0.039
0.040
0.046
0.079
0.047
0.051
0.050
0.052
00300
DO

MG/L

9.6
9.4
6.6
9.0

6.4
2.6

7.4
7.8
8.2
32217
CHLRPHYL
A
UG/L
13.9


11.6



57.5



00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
21 480
480
510
40 518
511
504
509
500
23 378
380
380
379















11EPALES
3
00400 00410
PH T ALK

SU
8.30
8.30
8.30
8.50
8.50

7.90
7.90
8.50
8.50
8.50
8.50















CAC03
MG/L
165
165
174
173
174

176
196
153
151
151
153















2111202
0018 FEET DEPTH
00610 00625 00630
NH3-N TOT KJEL N02&N03
TOTAL
MG/L
0
0
0
0
0

0
0
0
0
0
0















.040
.040
.040
.060
.080

.120
.200
.070
.050
.090
.050















N
MG/L
0.500
0.400
0.500
1.300
1.000

1.000
1.200
1.000
0.800
0.700
0.700















N-TOTAL
MG/L
8.110
7.920
8.260
6.830
6.880

6.800
5.040
2.660
2.690
2.680
2.700















00671
PHOS-DIS
ORTHO
MG/L P
0.064
0.065
0.059
0.011
0.007

0.007
0.007
0.019
0.020
0.020
0.021
















-------
       APPENDIX E
TRIBUTARY and WASTEWATER
  TREATMENT PLANT DATA

-------
STORET RETRIEVAL DATE 75/10/23
                                                                  1703A1
                                                                 40  39 50.0  088 56 14.0
                                                                 MONEY CREEK
                                                                 17055   MCLEAN CO MAP
                                                                 0/LAKE BLOOMINGTON
                                                                 ST  RO 473 BRDG BELO DAM 9 N BLOOMINGTON
                                                                 HEPALES             2111204
                                                                 4                    0000 FEET   DEPTH
DATE
FROM
TO
73/06/03
73/07/06
73/08/05
73/09/09
73/10/14
73/11/04
73/12/01
74/01/05
74/02/02
74/02/16
74/03/02
74/03/20
74/04/06
74/05/04
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
17
17
17
13
11
13
11
14
16
13
13
14
17
15
00
30
00
00
00
00
18
00
00
00
50
15
45
MG/L
7
8
5
0
0
3
2
2
10
8
9
10
10
10
.800
.100
.500
.132
.210
.100
.700
.100
.400
.750
.500
.860
.000
.500
MG/L
2.
3c
2.
4»
1.
1.
200
000
200
200
800
150
0.800
Oo
1.
0.
0.
0.
1.
1.
900
000
900
500
700
000
200
00610 00671 00665
Nri3~N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
Oo
0.
0.
0.
Oo
0.
0.
052
138
022
231
210
023
040
800
075
060
010
025
035
120
MG/L P
0.012
0.009
0.008
0.023
0.019
0.017

0.005K
0.090
0.040
0.035
0.015
0.005K
0.010
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
»035
o045
.020
.185
»145
o030
o!65
»030
.125
0055
0070
o050
0.005K
0
.020
   K VALUE KNOWN TO ae
   Ltss THAN INDICATED

-------
STORE! RETRIEVAL DATE 75/10/23
                                                                  1703A2
                                                                 40 36 18.0 088 53 55.0
                                                                 MONEY CREEK
                                                                 17      MCLEAN CO MAP
                                                                 I/LAKE BLOOMINGTON
                                                                 CO 12 BROG 2.5 Ml N OF TOWANDA
                                                                 11EPALES             2111204
                                                                 4                   0000 FEET  DEPTH
DATE
FROM
TO
73/06/03
73/07/06
73/08/05
73/09/09
73/10/14
73/11/04
73/12/01
74/01/05
74/02/02
74/02/16
74/03/02
74/03/20
74/04/06
74/05/04
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
08
18
19
17
11
10
10
13
11
13
11
13
11
15
45
00
30
00
30
25
30
40
00
00
00
45
15
50
MG/L
9
12
8
0
8
7
7
13
13
12
14
14
11
12
•
*
*
*
•
*
•
•
•
•
•
•
*
•
900
000
400
147
000
700
900
000
000
300
400
100
000
000
MG/L
1.
0.
3.
1.
1.
0.
0.
0.
0.
0.
1.
0.
1.
0.
400
250
200
900
200
150
100K
900
300
700
100
500
400
700
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
132
072
140
056
063
028
016
0.052
0.
0.
0.
0.
0.
0.
025
035
030
025
060
070
MG/L P
0.029
0.042
0.023
0.026
0.071
0.037
0.048
0.024
0.035
0.020
0.015
0.025
0.025
0.020
MG/L P
0.095
0.090
0.090
0.195
0.210
0.100
0.200
0.040
0.070
0.040
0.120
0.085
0.035
0.042
                    K VALUE KNOWN 10 bE
                    LESS THAN INDICATED

-------
STORE! RETRIEVAL DATE 75/10/23
                                                                  170321          SF170321     P000198
                                                                 40 36 27.0 088 59 40.0
                                                                 EAST BAY CAMP CONFERENCE CENTER
                                                                 17113   15 NORMAL
                                                                 0/LAKE BLOOMINGTON
                                                                 LAKE BLOOMINGTON
                                                                 11EPALES             2141204
                                                                 4                   0000 FEET  DEPTH
DATE
FROM
TO
73/07/14
CP(T)-
73/07/14
73/08/15
CP(T)-
73/08/15
73/09/15
73/10/15
cpm-
73/10/15
73/11/15
CP-
73/11/15
73/12/13
CP(T)-
73/12/14
74/01/14
CP(T>-
74/01/15
74/02/12
CP-
74/02/15
74/03/12
CP-
74/03/15
74/04/11
CP-
74/04/15
74/05/13
CPfTl-
74/05/15
74/06/11
cpm-
74/06/14
74/07/13
CP(T)-
74/07/15
00630
TIME DEPTH N02&N03
OF N-TOTAL
DAY FEET MG/L
11

15
08

11
09
08

15
07

15
08

10
08

12
08

09
08

08
U8

09
08

09
12

12
08


00

00
00

00
00
00

00
30

00
00

00
30

30
30

00
30

30
30

00
00

00
00

00
30



0


3

4

11


10


7


5


a


5


8


11


6


4


.440


.800

.400

.600


.000


.900


.500


.800


.400


.000


.000


.021


.800

00625
TOT KJEL
N
MG/L

29.200


20.000

21.000

0.150


0.820


5.500


O.SOOK


2.450


l.OOOK


l.OOOK


l.OOOK


26.000


16.000

00610 00671 00665 50051 50053
NH3-N PHOS-DIS PHOS-TOT FLOW CONOU1T
TOTAL ORTHO RATE FLOW-MOD
MG/L MG/L P MG/L P INSF MOD MONTHLY

8


2



0


0


0


0


0


0


0


0


14


0


.100


.650



.030


.064


.066


.360


.040K


.050K


.230


.150


.300


.230


4.350


5.750

4.860

2.310


2.200


1.900


0.300


1.360


0.780


0.860


1.500


3.550


2.800


14.630


15.000

6.950

2.500


2.400


1.900


0.340


1.550


0.790


1.050


1.650


3.900


3.200


0.013


0.044

0.015

0.012


0.005


0.006


0.005


0.006


0.006


0.007


0.010


0.019


0.011


0.028


0.030

0.016

0.006


0.003


0.006


0.006


0.006


0.008


0.009


0.010


0.018


0.024

                                K VALUE KNOWN TO BE
                                LESS THAN INDICATED

-------