U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAKE DECATUR
TON COUNTY
ILLINOIS
EPA REGION V
WORKING PAPER No, 302
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
T^G.P.O. 699-440
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REPORT
ON
LAKE DECATUR
MACON COUNTY
ILLINOIS
EPA REGION V
WORKING PAPER No, 302
WITH THE COOPERATION OF THE
ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
AND THE
ILLINOIS NATIONAL GUARD
JUNE, 1975
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1
CONTENTS
Page
Foreword jj
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 15
VI. Appendices 16
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11
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration comitment 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 [ 3O3(e)], water
quality criteria/standards review [ 3O3(c)], clean lakes [ 314(a,b)],
and water quality monitoring [ lO6 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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iii
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 COUNTY
Baldwin Randolph
Bloomington McLean
Carlyle Bond, Clinton, Fayette
Cedar Lake
Charleston Coles
Coffeen Montgomery
Crab Orchard Jackson, Williamson
Decatur Macon
DePue Bureau
East Loon Lake
Fox Lake
Grass Lake
Highland Silver Madison
Holiday LaSalle
Horseshoe Madison
Long Lake
Lou Yaeger Montgomery
Marie Lake
Old Ben Mine Franklin
Pistakee Lake, McHenry
Raccoon Marion
Rend Franklin, Jefferson
Sangchris Christian
Shelbyville Moultrie, Shelby
Slocum Lake
Springfield Sangamon
Storey Knox
Vandalia Fayette
Vermilion Vermilion
Wee Ma Tuk Fulton
Wonder McHenry
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Tributary Sani,ling Site
Lake Sampling Site
Sewage Treatment Facility
Drainage Area Doundary
DECATUR LAKE
tD 2 r.
Mi.
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LAKE DECATUR
STORET NO. 1714
I. CONCLUSIONS
A. Trophic Condition:
Survey data show that Lake Decatur is eutrophic. It
ranked 28th in overall trophic quality when the 31 Illinois
lakes sampled in 1973 were compared using a combination of
six parameters*. Eighteen of the lakes had less median
total phosphorus, 20 had less and one had the same median
dissolved phosphorus, 26 had less median inorganic nitrogen,
20 had less mean chlorophyll a, and 14 had greater mean Secchi
disc transparency. Marked depression of dissolved oxygen with
depth occurred at sampling station 1 in August, 1973.
Survey limnologists noted slight turbidity at all sampling
times and the occurrence of emergent vegetation in the northern
shallow areas of the lake.
B. Rate—Limiting Nutrient:
A significant loss of orthophosphorus occurred in the assay
sample between the time of collection and the beginning of the
assay, and the results are not representative of conditions
in the lake at the time the sample was taken.
The lake data indicate phosphorus limitation at all sampling
times.
* See Appendix A.
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2
C. Nutrient Controllability:
1. Point sources——The phosphorus contributions of
measured point sources amounted to 8.1% of the total load
during the sampling year. The Monticello and Mt. Zion
wastewater treatment plants each contributed about 4% of
the load.
The present phosphorus loading rate of 9.15 g/m 2 /yr is
nearly seven times that proposed by Vollenweider (Vollenweider
and Dillon, 1974) as a eutrophic rate (see page 14). However,
the mean hydraulic retention time of Lake Decatur is a short
11 days, and Vollenweider’s model probably does not apply.
Nonetheless, the existing trophic condition of the lake is
evidence of excessive nutrient loads.
On the basis of Survey data, it appears that the trophic
condition of Lake Decatur will continue to deteriorate unless
the present loading rate is reduced. Because of this, and
because the lake is phosphorus limited, all phosphorus inputs
should be minimized to the greatest practicable degree.
There are point sources impacting the Sangamon River above
station A-2 that potentially could contribute nutrient loads
to Lake Decatur (MIller, 1974). However, these sources are
located beyond the 40-kilometer limit of the Survey* and for
* See Working Paper No. 175, “...Survey Methods, 1973-1976”.
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this reason were not included in this report. Even so,
nutrients from these sources most likely would reach the
lake eventually, and these sources also should be considered
in any program to reduce phosphorus inputs to Lake Decatur.
2. Non-point sources—The phosphorus load from non-point
sources accounted for 91.9% of the total load. The phosphorus
loads of the gaged tributaries ranged from 74.9% of the total
load (Sangamon River) to less than 1% (Sand Creek and Unnamed
Creek B-l). Big Creek and Finley Creek were estimated to have
contributed 4.4% and 2.4% of the total, respectively. The
ungaged tributaries accounted for 5.3% of the phosphorus load
reaching the lake.
Excluding those sampled for land-use studies, the phosphorus
export rates of the Lake Decatur tributaries ranged from 31 to
41 kg/km2/yr with a mean rate of 35 kg/km2/yr (see page 13).
It will be noted that these rates compare quite well with the
export rates of the unimpacted tributaries sampled for land-use
studies (mean of 30 kg/km2/yr). The somewhat higher export rate
of the Sangamon River may indicate the impact of the point
sources beyond the Survey limit noted above.
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4
2. Outlet -
Sangamon River
C. Precipitation***:
1. Year of sampling: 159.0 centimeters.
2. Mean annual: 102.2 centimeters.
1- Table of metric conversions--Appendix B.
tt Forneris, 1973.
* For limits of accuracy, see Working Paper No. 175.
** Includes area of lake.
*** See Working Paper No. 175.
II. LAKE AND DRAINAGE BASIN CHARACTERISTICSt
A. Lake Morphometrytt:
1. Surface area: 11.35 kilometers 2 .
2. Mean depth: 1.4 meters.
3. Maximum depth: >4.6 meters.
4. Volume: 15.893 x 106 m 3 .
5. Mean hydraulic retention time: 11 days.
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries —
Name
Drainage
area (km 2 j*
Mean flow
(m 3 /sec)*
Sangamon River
2,004.7
14.3
Unnamed Creek (B-l)
21.9
0.1
Big Creek
121.7
0.8
Finley Creek
68.6
0.4
Sand Creek
19.9
0.1
Minor tributaries &
immediate drainage —
181.2
1.7
2 ,429.4**
17.4
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5
III. LAKE WATER QUALITY SUMMARY
Lake Decatur 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
three 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 three
stations for phytoplankton identification and enumeration; and during
the first visit, a single 18.9-liter depth-integrated sample was com-
posited 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 4.6 meters at station 1, 3.0 meters
at station 2, and 1.5 meters at station 3.
The results obtained are presented in full in Appendix D and are
summarized in the following table.
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A.
SUMMARY
OF
PHYSICAL AND CHEMICAL
Cr4ARACT€RISTICS
FOR
LAKE OLCATUR
STORIT
CODE 1714
1ST
SAMPLING
( SI
8/73)
2ND SAMPLING ( 8/
9/73) 3RD SAMPLING (10/18/73)
3 SITES 3 SITES 3 SITES
PARAMETER
RANGE
MEAN
MEDIAN
RANGE
MEAN
MEDIAN
RANGE
MEAN
MEDIAN
TEMP (C)
14.9 — 15.9
15.4
15.4
24.1
— 28.1
27.0
21.8
17.3 — 18.5
17.9
(1.9
DISS DAY (MG/U
9.0
— 9.5
9.2
9.2
0.5
— 10.4
6.1
6.8
7.6
— 13.2
9.2
8.0
CNDCTVY (MCROMO )
30.
- 612.
579.
600.
442.
- 586.
519.
535.
412.
- 492.
435.
425.
PH (STAND UNITS)
8.2
— 8.3
8.2
8.2
7.3
— 8.5
8.0
8.1
7.9
— 8.5
8.1
8.0
TOT ALK (MG/L)
195.
— 230.
210.
208.
(83.
— 280.
232.
260.
200.
— 244.
212.
207.
TOT P (MG/L(
0.099
— 0.149
0.124
0.125
0.064
— 0.155
0.112
0.107
0.111
— 0.113
0.143
0.147
ORTHO P (MG/L)
0.060
— 0.101
0.079
0.070
0.013
— 0.061
0.032
0.021
0.039
— 0.062
0.056
0.060
N02.NU3 (MG/U
6.530
— 7.7(0
7.194
1.450
2.810
— 4.130
3.631
3.650
0.040
— 1.200
0.190
0.870
AMMONIA (MG/U
0.080
— 0.120
0.102
0.100
0.030
— 0.180
0.086
0.070
0.040
— 0.060
0.043
0.040
KJEL N (MG/U
0.500
— 0.600
0.512
0.500
0.900
— 1.500
1.157
1.000
0.400
— 1.000
0.633
0.550
INORG N (MG/U
6.650
— 7.810
7.296
7.535
2.990
— 4.200
3.717
3.720
0.080
— 1.240
0.833
0.915
TOTAL N (MG/L)
7.100
— 8.210
7.706
7.950
3.810
— 5.430
4.789
4.650
(.040
— 1.700
1.423
1.465
CHLRPYL A (UG/L)
3.0
— 35.9
14.7
5.3
41.7
— 193.8
92.9
43.1
6.3
— 33.9
21.4
24.0
SECCHI (M TE S)
0.’.
— 0.5
0.4
U.’.
0.4
— 1.2
0.6
0.4
0.5
— 0.5
0.5
0.5
a
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7
B. Biological characteristics:
1. Phytoplankton —
Sampling Dominant Algal units
Date Genera p er ml
05/08/73 1. Melosira p. 256
2. Scenedesmus 160
3. Cryptomonas .p. 160
4. Cyclotella . &
Stephanodiscus p. 160
5. Dactylococcopsis . 64
Other genera 320
Total 1,120
08/09/73 1. Centric diatoms 1,116
2. Nitzschia p. 950
3. Flagellates 868
4. Melosira p. 678
5. Euglena p. 271
Other genera ] 19O
Total 5,073
10/18/73 1. Nitzschia p. 1,855
2. Cyclotella p. &
Stephanodiscus p. 909
3. Melosira 795
4. Merismopedia p. 719
5. Flagellates 416
Other genera 1 ,856
Total 6,550
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8
2. Chlorophyll a -
Sampling Station Chlorophyll a
Date Number ( jig/i )
05/08/73 01 35.9
02 5.3
03 3.0
08/09/73 01 193.8
02 43.1
03 41.7
10/18/73 01 6.3
02 24.0
03 33.9
C. Limiting Nutrient Study:
A 74% loss of orthophosphorus occurred in the assay sample
between the time of collection and the beginning of the assay,
and the assay results are not representative of conditions in
the lake at the time the sample was taken.
The lake data indicate phosphorus limitation at all samp-
ling times; i.e., the mean inorganic nitrogen to orthophosphorus
ratios were 15 to 1 or greater, and phosphorus limitation would
be expected.
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9
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 month of 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, if any.
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 land-use stations E-l, F-i, G-l,
and H—i (see page 13) and multiplying the means by the ZZ area in km 2 .
The operators of the Monticello and Mt. Zion wastewater treatment
plants provided monthly effluent samples and corresponding flow data.
* See Working Paper No. 175.
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10
A. Waste Sources:
1. Known muncipal* -
Name
Monticello
Mt. Zion
Pop.
Served
4,300
3,000
Treatment
act. sludge
+ pond
act. sludge
+ pond
Mean Flow
(m 3 /d)
2 , 1 04. 5
1,447.8
2. Known industrial - None
Receiving
Water
Sangamon River
Finley Creek
* Treatment plant questionnaires.
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11
B. Annual Total Phosphorus Loading — Average Year:
1. Inputs -
kgP/ %of
Source yr total
a. Tributaries (non—point load)
Sangamon River 81,425 78.4
Unnamed Creek (B-i) 670 0.6
Big Creek 4,535 4.4
Finley Creek 2,535 2.4
Sand Creek 610 0.6
b. Minor tributaries & immediate
drainage (non-point load) - 5,480 5.3
c. Known municipal SIP’s —
Monticello 4,215 4.1
Mt. Zion 4,175 4.0
d. Septic tanks — Unknown
e. Known industrial - None -
f. Direct precipitation* — 200 0.2
Total 103,845 100.0
2. Outputs -
Lake outlet - Sangamon River 77,020
3. Net annual P accumulation - 26,825 kg.
* See Working Paper No. 175.
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12
C. Annual Total Nitrogen Loading — Average Year:
1. Inputs —
kgN/ %of
Source yr total
a. Tributaries (non-point load) -
Sangamon River 2,236,060 82.2
Unnamed Creek (B-i) 27,130 1.0
Big Creek 127,665 4.7
Finley Creek 74,725 2.7
Sand Creek 24,110 0.9
b. Minor tributaries & immediate
drainage (non-point load) - 209,605 7.7
c. Known municipal STP’s —
MontIcello 6,505 0.2
Mt. Zion 3,905 0.1
d. Septic tanks - Unknown -
e. Known industrial - None — -
f. Direct precipitation* — 12,255 0.5
Total 2,718,960 100.0
2. Outputs —
Lake outlet - Sangamon River 3,242,030
3. Net annual N loss - 523,070 kg.
* See Working Paper No. 175.
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13
D. Mean Annual Non—point Nutrient Export by Subdrainage Area:
Tributary
kg P/kni 2 /yr
kg N/km 2 /yr
Sangamon River
Unnamed Creek (B—i)
Big Creek
Finley Creek
Sand Creek
Unnamed Creek (E_1)*
Friends Creek*
Unnamed Creek (G_1)*
Willow Branch*
* These tributaries were sampled for land-use studies.
are presented here for comparison. Nutrient loading
streams are included in the estimates at station A—2
River.
The export rates
estimates for these
on the Sangamon
41
31
37
37
31
36
21
35
29
1,115
1 ,239
1 ,049
1 ,089
1 ,212
1 ,337
1 ,031
1 ,045
1,214
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14
E. Yearly Loading Rates:
In the following table, the existing phosphorus loading
rates are compared to those proposed by Vollenwelder (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/m 2 /yr 9.15 2.36 239.6 loss*
Vollenweider loading rates for phosphorus
(g/m 2 /yr) based on mean depth and mean
hydraulic retention time for Lake Decatur:
“Dangerous” (eutrophic rate) 1.32
“Permissible” (oligotrophic rate) 0.66
* There was an apparent loss of nitrogen from Lake Decatur 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 Eutrophication and Lake Restora-
tion Branch (Malueg et al., 1975).
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15
V. LITERATURE REVIEWED
Forneris, John J., 1973. Personal communication (lake morphometry).
IL Env. Prot. Agency, Springfield.
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.
Qual., vol. 4, no. 2, PP. 236-242.
Miller, Warren, 1974. Personal coniiiunication (nutrient sources in
the Sangamon River basin). IL Env. Prot. Agency, Springfield.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Pubi. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
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VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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LAKE DATA TO SE USEL) IN RANKINGS
LAKE MEDIAN MEDIAN 500- MEAN 15- MEDIAN
CODE LAKE NAME TOTAL P INORG N MEAN SEC CHLJWA MIN UD 0155 GRInD R
1703 LAKE 8LOOMINGTON 0.0 50 5.730 ‘.64.667 26.200 1 ’ ..800 0.020
1706 LAKE CARLYLE 0.084 1.270 477.889 17.3 ’ .7 11.000 0.032
1708 LAKE CHARLESTON 0.160 4.680 ‘.90.661 12.000 8.400 0.065
1711 COFFEEN LAKE 0.032 0.260 ‘.5o.222 7.700 14.900 0.012
1712 CRAb ORCHARD LAKE 0.082 0.200 ‘.82.222 59.861 (3.800 0.013
1714 LAKE DECATUR 0.129 3.750 479.571 43.000 14.500 0.062
1725 LONG LAKE 0.70’. 1.190 482.661 49.333 8.800 0.398
1726 LAKE LOU YAEGER 0. 186 1.600 489.583 10.662 11.400 0.07’.
1727 LAKE MARIE 0.098 0.370 4b7.667 39.533 14.700 0.057
1733 PISTAKEE LAKE 0.203 0.370 485.867 75.867 7.000 0.062
1735 REND LAKE 0.071 0.210 471.500 23.533 12.700 0.012
1739 LAKE SHEL8YVILLE 0.062 3.290 461.333 17.161 14.800 0.O 1
1740 SILVER LAKE (HIGHLAND) 0.226 0.970 489.500 5.822 14.800 0.057
1742 LAKE SPRINGFIELD 0.108 3.265 483.385 13.013 10.800 0.059
1748 VERMILION LAKE 0.109 4.695 481.500 31.150 14.200 0.050
1750 0NDER LAKE 0.42’. 0.890 486.000 98.533 7.800 0.132
(751 LAKE STORY 0.072 2.510 459.333 11.250 14.800 0.u21
1752 DEPUE LAKE 0.438 4.050 490.000 58.833 7.600 0.27’.
1753 LAKE SANGCtIMIS 0.050 1.970 475.417 19.292 14.500 0.009
175’. LAKE HOLIDAY 0.167 3.135 485.167 51.217 7.200 0.04’.
1755 FOX LAKE 0.219 0.375 486.167 63.850 8.800 0.083
(75’. GRASS LAKE 0.301 0.820 481.000 83.500 5.900 0.u93
(757 EAST LOON LAKE 0.076 0.120 450.000 22.300 (4.900 0.u1 n
(758 SLOCUM LAKE 0.865 0.200 481.333 221.100 5.800 0.362
1759 CEDAR LAKE 0.029 0.170 400.333 5.167 12.800 0.0 ii
1761 LAKE WEMAIUK 0.0o9 (.710 ‘.66.J33 7.967 I4. 00 0.031
(762 RACCOON LAKE 0.10’. 0.310 484.333 19.217 13.800 0.020
(763 OALOWIN LAKE 0.044 0.140 461.167 11.133 (3.200 0.00/
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LAKE
DATA
TO BE USEt) IN RANKINGS
LAKE
CODE
LAKE
NAME
MEDIAN
TOTAL
P
MEDIAN
INORG
N
500—
MEAN SEC
MEAN
CriLO A
15-
MIN 00
MEO1 N
OI5S O T -’O
1764
LAKE
VANDALIA
0.116
0.480
478.111
11.27b
i’..aoo
0.023
1765
OLD
BEN MINE ESEWVO1t
0.930
0.205
478.333
31.433
11.200
0.575
1766
HOkSE5HOE LAKE
0.127
0.705
482.833
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PERCENT OF LAKES wITl rIIGHER VALUES (NUMBER OF LAKES WITH 4IGHER VALUES)
LAKE
CODE
LAKE NAME
MEDIAN
TOTAL P
MEDIAN
INORG
N
900-
MEAN SEC
MEAN
C,4LORA
15—
MIN
00
MEDIAN
DISS OkillO I
IN UEX
NO
1703
LAKE LOOMtNG1ON
88 (
26)
0 (
0)
‘ .0 (
24)
‘.7 (
14)
13 (
2)
68
( 20)
2 6
1706
LAKE CARLYLE
63 I
19)
40 I
12)
63 I
(9)
63 I
19)
63 I
19)
53
( 16)
345
1708
LAKE CHARLESTON
37 I
II)
7 1
2)
0 1
0)
77 1
23)
77 I
23)
27
I 8)
22 ,
171)
COFFEEN LAKE
97 I
29)
77 1
23)
93 1
28)
93 1
28)
2 I
0)
92
1 27)
454
17)2
CRAB ORCHARD LAKE
67 I
20)
90 I
27)
‘.3 I
(3)
20 I
6)
42 (
12)
85
I 25)
347
1714
LAKE DECATUM
40 I
12)
13 (
4)
53 ( 16)
.33 1
10)
30 (
8)
32
3 9)
20)
1725
LONG LAKE
7 I
2)
43 I
13)
‘.0 I 12)
30 I
9)
72 (
21)
3
I 1)
195
172A
LAKE LOU YAEGER
30 I
9)
37 (
11)
7 ( 2)
87 I
26)
57
17)
23
1 7)
24)
1727
LAKE MARIE
60 1
18)
68 1
20)
73 I 22)
37 1
11)
23 1
7)
‘.2
1 12)
303
1733
PISTAKEE LAKE
27 3
8)
68 3
20)
23 I 7)
13 I
4)
90 I
27)
32
I 9)
253
1735
REND LAKE
77 1
23)
80 I
24)
70 I 2!)
SO I
15)
53 I
IA)
92
( 27)
422
1739
LAKE SHELNYVILLE
83 I
25)
17 1
5)
83 1 25)
70 I
21)
13 I
2)
73
1 22)
339
1740
SILVER LAKE (HIGHLAND)
20 I
6)
47 1
14)
10 ( 3)
97 I
29)
13 (
2)
42
1 12)
229
1742
LAKE SPRINGFIELD
53 I
16)
20 I
6)
33 I 10)
73 I
22)
67 1 20)
37
( 11)
283
1748
VERMILION LAKE
50 I
15)
3
1)
47 ( 14)
43 1
13)
37 I I)
47
( 14)
227
1750
WONDER LAKE
13 I
4)
50 1
15)
20 1 6)
7 I
2)
80 I 24)
13
I 4)
183
1791
LAKE STORY
73 I
22)
27 I
8)
90
I 27)
67 I
20)
13 I 2)
63
3 19)
333
(752
OEPU( LAKE
10 I
3)
10 I
3)
3
1 1)
23 I
7)
83 I 25)
10
I 3)
139
1753
LAKE SANGCHRIS
88 I
26)
30 I
9)
‘.7
( 20)
57 1
17)
30 ( 8)
97
I 29)
369
(754
LAKE HOLIDAY
33 I
10)
23 1
7)
27
1 8)
27 1
8)
87 I 26)
50
( 15)
247
1755
FOX LAKE
23 I
7)
63 I
19)
17
I 5)
17 1
5)
72 1 21)
20
1 6)
212
1756
GRASS LAKE
17 I
5)
53 1
16)
50
1 15)
(0 I
3)
97 ( 29)
(7
I 5)
2’.’.
(757
EAST LOON LAKE
70 3
21)
100 1
30)
97
1 29)
53 I
16)
2
I 0’
77
3 23)
.3 ’ .9
(758
SLOCUM LAKE
3 1
))
87 I
26)
13
( 4)
0 1
0)
100
I 30)
7
I 2)
210
1750
CEDAR LAKE
100 I
30)
93 I
28)
100
I 30)
100 (
30)
50
( (5)
8
I 5)
528
(761
LAKE WEMATUK
80 I
24)
.13 1
10)
II
C 23)
90 1
27)
30
( 8)
57
1 17)
367
(762
RACCOON LAKE
57 I
17)
73 I
22)
30
C 9)
‘.0 I
18)
‘.2
• 12’
6’.
1 20)
.3 .s0
1763 BALDWIN LAKE
93 3 28) ‘77 ( 29’ 87 1 . ‘.0 4 ) •.1 C 1.) 100 30’
50.
-------
MEAN 15— MEDIAN
CHLORA MIN 00 DISS O TMO P NO
83 ( 25) 13 ( 2) 60 ( 18) 323
40 ( 12) 60 ( 18) 0 ( 0) 2’.0
3 ( 1) 93 ( 28) 80 ( 24) 313
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF
LAKE MEDIAN
CODE LAKE NAME TOTAL P
1764 LAKE VANOALIA 47 ( 14)
1765 OLD bEN MINE RESERVOIR 0 ( 0)
1766 HORSESHOE LAKE 43 ( 13)
LAKES WITH HIGHER VALUES)
MEDIAN 500—
INORG N MEAN SEC
60 ( 18) 60 ( 18)
83 ( 2S) 57 ( 17)
57 C 17) 37 ( 11)
-------
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 454
4 1735 REND LAKE 422
5 1757 EAST LOON LAKE 399
6 1753 LAKE SAP4GCr4RL5 369
7 1761 LAKE EMATUK 367
8 1712 CRAB ORCHARD LAKE 347
9 1706 LAKE CARLYLE 345
10 1739 LAKE SHELBYVILLE 339
11 1751 LAKE STORY 333
12 1762 RACCOON LAKE 330
13 1764 LAKE VANDALIA 323
14 1766 HORSESHOE LAKE 313
15 1727 LAKE MARIE 303
16 1703 LAKE BLOOMINGTON 296
17 1742 LAKE SPRINGFIELD 223
18 1733 PISTAIcEE LAKE 253
19 175’. LAKE NOLIDAY 247
20 1756 GRASS LAKE 244
21 1728 LAKE LOU YAEGER 241
22 1765 OLD BEN MINE RESERVOIR 240
23 1740 SILVER LAKE (HIGHLANDI 229
24 174a VEI’lMILION LAKE 227
25 hOd LAKE CHARLESTON 225
28 1755 FOA LAKE 212
27 1758 SLOCUM LAKE 2 10
28 1714 LAr E DECATu- 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
Cubic meters x 8.107 x lO = 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 lbs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR ILLINOIS 10/23/75
LAKE COVE 1714 LAKE DECATUR
TOTAL DRAINAGE AREA OF LAKE (SO KM) 2429.4
SUB-DRAINAGE NORMALIZED FLOIS(CMS)
TRIBUTARY AREA(SU KM) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MEAN
1714A 1 2429.4 17.95 23.25 31.15 32.56 34.83 18.75 12.32 6.85 5.32 6.60 9.15 10.65 17.41
1714A2 200’..7 14.84 19.31 25.54 26.90 28.60 15.46 10.11 5.55 4.28 5.32 7.45 8.72 14.31
171481 21.9 0.13 0.21 0.26 0.26 0.21 0.18 0.10 0.05 0.04 0.04 0.06 0.07 0.13
17 14C1 121.7 0.79 1.18 1.47 1.51 1.19 1.00 0.60 0.31 0.22 0.24 0.35 0.42 0.77
171401 68.6 0.43 0.67 0.82 0.84 0.66 0.56 0.33 0.17 0.12 0.13 0.19 0.23 0.43
1714(1 55.4 0.35 0.54 0.66 0.68 0.53 0.45 0.27 0.14 0.09 0.10 0.15 0.18 0.34
l7l4Fl 45.1 0.28 0.44 0.54 0.55 0.43 0.37 0.22 0.11 0.08 0.08 0.12 0.15 0.28
171461 25.4 0.15 0.25 0.30 0.31 0.24 0.21 0.12 0.06 0.04 0.04 0.07 0.08 0.16
1714H1 54.9 0.35 0.54 0.65 0.67 0.53 0.45 0.27 0.14 0.09 0.10 0.15 0.18 0.3’.
1714J 1 19.9 0.12 0.19 0.23 0.24 0.19 0.16 0.09 0.05 0.03 0.03 0.05 0.06 0.12
1714 1Z 192.7 1.6’. 1.67 2.83 2.80 3.99 1.39 1.08 0.72 0.64 0.84 1.04 1.15 1.65
SUMMARY
TOTAL DRAINAGE AREA OF LAKE = 2429.4 TOTAL FLOW IN = 222.87
SUM OF SUB—DRAINAGE AREAS 2610.3 TOTAL FLOW OUT 209.37
NOTE **Q TRIBS Eli F l , 61 AND Hi ARE INCLUDED IN A2
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
1714A1 6 73 100.24 2 32.28
7 73 20.95 7 20.36
8 73 6.37 4 10.62
9 73 1.05 8 1.22
10 73 0.23 14 0.0
11 73 0.05 4 0.0
12 73 15.97 1 3.20
I 74 77.02 6 19.03
2 74 49.84 3 65.70
3 74 53.2’. 3 39.08 24 27.18
4 74 20.73 7 23.33
5 74 61.16 5 11.84
1714A2 6 73 83.53 2 27.84
7 73 17.16 7 18.21
8 73 6.17 4 9.60
9 73 1.53 8 1.61
10 73 1.39 14 1.50
ii 73 1.42 4 1.27
12 73 13.08 1 2.61
1 74 63.71 6 15.72
2 74 62.19 3 54.37
3 74 44.17 3 32.85 24 22.99
4 74 21.27 7 19.91
5 74 50.40 5 9.71
-------
TRIBUTARY FLOW INFORMATION FOR ILLINOIS 10/23/75
LAKE CODE 1714 LAKE DECATUR
MEAN MONTHLY FLOWS AND DAILY FLOWS(CNS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
1714 1 6 73 0.48 2 0.15
7 73 0.31 7 0.11
8 73 0.06 4 0.11
9 73 0.01 8 0.01
10 73 0.01 14 0.01
11 73 0.03 4 0.03
12 73 0.18 1 0.05
1 74 0.65 6 0.17
2 74 0.45 3 0.59
3 74 0.45 3 0.34 24 0.23
4 74 0.21 7 0.20
5 74 0.37 5 0.07
17 14C1 6 73 2.72 2 0.01
7 73 1.76 7 0.01
8 73 0.34 4 0.65
9 73 0.08 8 0.08
10 73 0.06 14 0.07
11 73 0.15 4 0.16
12 73 1.13 1 0.31
I 74 3.85 6 0.99
2 74 2.58 3 3.34
3 74 2.55 3 1.87 24 1.33
4 74 1.19 7 1.13
5 74 2.10 5 0.40
1714D1 6 73 1.53 2 0.45
7 73 0.99 7 0.37
8 73 0.19 4 0.37
9 73 0.04 8 0.05
10 73 0.03 14 0.04
11 73 0.08 4 0.09
12 73 0.62 1 0.17
I 74 2.12 6 0.54
2 74 1.44 3 1.87
3 74 1.42 3 1.05 0.74
4 74 0.68 7 0.62
5 74 1.16 5 0.23
1714E1 6 73 1.25 2 0.37
7 73 0.79 7 0.28
8 73 0.15 4 0.28
9 73 0.03 8 0.04
10 73 0.03 14 0.03
11 73 0.07 4 0.07
12 73 0.48 1 0.1’.
I 74 1.70 6 0.42
2 74 1.19 3 1.50
3 74 1.13 3 0.85 24 0.59
4 74 0.54 7 0.51
5 74 0.93 5 0.18
-------
TRIBUTARY FLOW INFORMATION FOR ILLINOIS 10/23/75
LAKE CODE 1114 LAKE DECATUR
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
17 14F 1 6 73 0.99 2 0.31
7 73 0.62 7 0.24
8 73 0.12 4 0.24
9 73 0.03 8 0.03
10 73 0.02 14 0.02
11 73 0.05 4 0.06
12 73 0.40 1 0.11
1 74 1.39 6 0.34
2 74 0.96 3 1.25
3 4 0.93 3 0.68 24 0.48
4 74 0.42 7 0.40
5 74 0.76 5 0.15
1714G1 6 73 0.57 2 0.17
7 73 0.34 7 0.13
8 73 0.07 4 0.13
9 73 0.01 8 0.02
10 73 0.01 14 0.01
11 73 0.03 4 0.03
12 73 0.22 1 0.06
1 74 0.76 6 0.19
2 74 0.54 3 0.71
3 74 0.51 3 0.40 24 0.27
4 74 0.24 7 0.23
5 74 0.42 5 0.08
1714H1 6 73 1.22 2 0.37
7 73 0.76 7 0.28
8 73 0.15 4 0.28
9 73 0.03 8 0.04
10 73 0.03 14 0.03
11 73 0.06 4 0.07
12 73 0.48 1 0.13
1 74 1.70 6 0.42
2 74 1.16 3 1.50
3 74 1.13 3 0.85 24 0.59
4 74 0.54 7 0.51
5 74 0.93 5 0.18
1714J 1 6 73 0.45 2 0.13
7 73 0.27 7 0.10
8 73 0.05 4 0.10
9 73 0.01 8 0.01
10 73 0.01 14 0.01
II 73 0.02 ‘. 0.02
12 73 0.17 1 0.05
1 7’. 0.59 6 0.15
2 74 0.42 3 0.54
3 74 0.40 3 0.31 24 0.21
4 74 0.19 7 0.18
5 74 0.34 5 0.06
-------
TRIBUTARY FLOW INFORMATION FOR ILLINOIS 10/23/75
LAKE CODE 1714 LAKE DECATUR
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRI8UTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
171’.ZZ 6 73 12.66 2 4.30
7 73 1.76 7 1.08
8 73 0.79 4 1.02
9 73 0.13 8 U.14
10 73 0.09 14 0.05
11 73 0.24 4 0.26
12 73 6.23 1 1.59
1 74 6.23 6 1.59
2 74 3.60 3 4.98
3 7 ’ . 4.81 3 3.51 24 2.52
4 74 2.18 7 2.07
5 74 6.80 5 1.36
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 75/10/23
17 1’. 0 1
39 49 30.0 088 57 11.0
LAKE DECATUR
17115 ILLINOIS
1 1EPALES
3
2111202
0018 FEET DEPTH
73/05/08 09 15 0000
09 15 0004
09 15 0015
73/08/09 09 45 0000
09 45 0012
09 45 0015
73/10/18 17 25 0000
17 25 0005
17 25 0015
0.145
0.131
0.149
0.0 64
0.107
0.144
0.111
0.129
0.146
DATE
TIME
DEPTH
FROM
OF
TO
DAY
FEET
73/05/08
09 15
09 15
09 15
0000
0004
0015
73/08/09
09 45
09 45
09 45
0000
0012
0015
73/10/18
ii 25
17 25
17 25
0000
0005
0015
DATE
TIME
DEPTH
FROM
OF
TO
DAY
FEET
9.0
9.1
4.5
0.5
7.6
7.8
00010
00300
00077
00094
00400
00410
00610
00625
00630
00671
WATER
DO
T ANSP
CNDuCTvY
PH
T ALK
NH3—N
TOT KJEL
N02&N03
PisOS—DIS
TEMP
SECCHI
FIELD
CACO3
TOTAL
N
N—TOTAL
ORTHO
CENT
MG/L
INCHES
MICROMHO
SU
MG/L
P46/L
HG/L
HG/L
MG/L P
15.9
18
550
8.20
196
0.120
0.500
6.600
0.101
15.9
530
8.20
195
0.120
0.600
6.530
0.100
15.9
530
8.20
195
0.120
0.500
6.630
0.098
27.4
48
477
8.50
184
0.030
1.000
3.580
0.013
25.6
468
7.30
183
0.120
0.900
3.630
0.067
24.1
442
7.50
184
0.180
1.000
2.810
0.066
18.4
18
417
8.00
201
0.040
0.500
1.180
0.062
18.0
414
7.90
202
0.040
0.400
1.150
0.062
17.9
412
7.90
200
0.040
0.500
1.200
0.062
00665 32217
PHOS-TOT CHLRPHYL
A
M6/L P UG/L
35 • 9
193.8
6.3
-------
STORET RETRIEVAL DATE 75/10/23
171402
39 50 08.0 088 54 32.0
LAKE DECATUR
17115 ILLINOIS
1 1EPALES 2111202
3 0012 FEET DEPTH
00010 00300 00077 0009’. 00400 00410 00610 00625 00630 00671
DATE TIME DEPTH WATER DO TRANSP CNDLJCTVY PM T ALK NM3—N TOT KJEL NO2 NO3 PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 TOTAL N N—TOTAL ORTHO
TO DAY FEET CENT MG/L INCHES MICROMNO SO MG/L M&L M6/L MG/L MG/L P
73/05/08 09 45 0000 15.4 16 600 8.20 210 0.090 0.500 7.400 0.071
09 45 0004 15.4 9.2 600 8.20 205 0.080 0.500 7.500 0.069
09 45 0010 15.3 9.2 600 8.20 220 0.090 0.500 7.570 0.063
73/08/09 09 25 0000 27.8 14 535 8.30 270 0.060 1.500 3.660 0.017
09 25 0006 27.8 10.4 537 8.30 260 0.050 1.000 3.650 0.021
73/10/18 17 45 0000 18.5 440 8.20 212 0.060 0.800 0.580 0.058
17 45 0008 17.6 8.2 432 8.10 212 0.040 0.600 0.590 0.053
00665 32217
DATE TIME DEPTH PHOS—TOT CMLRPHYL
FROM OF A
TO DAY FEET MG/L P UG/L
73/05/08 09 45 0000 0.120 5.3
09 45 0004 0.109
09 45 0010 0.099
73/08/09 09 25 0000 0.095 43•j
09 25 0006 0.101
73/10/18 17 45 0000 0.152 24.0
17 45 0008 0.148
-------
STORET RETRIEVAL DATE 75/10/23
171403
39 51 55.0 088 52 48.0
LAKE DECATUR
17115 ILLINOIS
11EPALES 2111202
3 0006 FEET DEPTH
00010 00300 00077 00094 00400 00410 00610 00625 00630 00671
DATE TIME DEPTH WATER DO TRANSP CNDUCTVY I H T ALK NH3—N TOT KJEL N02&N03 PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 TOTAL N N—TOTAL ORTHO
TO DAY FEET CENT MG/L INCHES MLCROMHO Su MG/L MG/L MG/L MG/L MG/L P
73/05/08 10 15 0000 14.9 15 612 8.30 230 0.100 0.500 7.610 0.063
io Is ooos 14.9 9.5 612 8.30 230 0.100 0.500 7.710 0.060
73/08/09 09 Os oooo 28.1 14 585 8.10 260 0.090 1.400 3.960 0.014
09 05 0003 28.0 9.2 586 8.00 280 0.070 1.300 4.130 0.023
73/10/18 18 00 0000 17.3 13.2 492 8.50 244 0.040 1.000 0.040 0.039
00665 32217
DATE TIME DEPTH PHOS—TOT CHLRPHYL
FROM OF A
TO DAY FEET MG/L P UG/L
73/05/08 10 15 0000 0.130 3.0
10 15 0005 0.112
73/08/09 09 05 0000 0.116 41.7
09 05 0003 0.155
73/10/18 18 00 0000 0.173 33.9
-------
APPENDIX E
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 75/10123
171 4A1
39 49 50.0 088 58 35.0
SANGAMON RIVER
17199 7.5 DECATUR
U/DECATU LAKE
HWY 48 8RDG IN SE DECATUR
ILEPALES 21112u4
4 0000 FEET DEPTr4
00630 00625 00610 00671 00665
DATE TIME DEPT 1 NO2 NO3 TOT KJEL NH3—N PHOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO OAY FEET M /L MG/L MG/L MG/L P MG/L P
73/06/02 09 05 5.500 1.200 0.024 0.022 0.090
7J/07/07 08 3’. 5.800 2.900 0.054 0.015 0.065
73/08/04 08 15 3.400 1.000 0.052 0.098 0.155
73/09/08 08 30 0.850 4.500 0.340 0.035 0.1s5
7j/10/14 08 35 1.000 0.650 0.057 0.043 0.100
73/11/04 08 35 0.860 1.100 0.036 0.048 0.080
73/12/01 08 35 0.540 0.700 0.020 0.036 0.250
7 ’ ./01/06 08 35 7.600 0.600 0.056 0.064 0.095
74/02/03 08 35 8.800 0.600 0.050 0.085 0.145
74/03/03 08 35 8.900 1.600 0.025 0.065
74/03/24 08 15 4.800 0.900 0.040 0.015 0.030
74/04/07 08 30 8.000 0.900 0.050 0.055 0.195
7 ’ ./05/05 08 35 6.600 0.200 0.037 0.014 0.045
-------
STwiET RETRIEVAL DATE 7 /1O/23
1 71442
39 55 10.0 088 4b 10.0
SANGAMON k1VEP
17 7.5 Ar GENTA
I/DECATUR LAKE
MACON CO HWY 25 BRUG 2.8 MI N OF OAKLEY
11EPALES 21112u’.
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTP N02&N03 TOT KJEL Nr13—N Pt-iOS—D IS PHOS—TOJ
FROM OF N-TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L M(VL MG/L P MG/L P
73/06/02 10 45 8.600 2.100 0.080 0.067 0.175
73/07/07 10 51 7.900 1.100 0.020 0.069 0.260
73/08/04 10 20 4.500 0.240 0.036 0.079 0.175
73/09/08 10 35 0.120 1.150 0.126 0.099 0.2’.0
73/10/14 10 45 1.020 0.525 0.044 0.040 0.09
7J/11/04 10 40 1.240 1.350 0.081 0.340 0.400
73/12/01 2.600 0.600 0.064 0.148 0.345
74/01/06 10 40 0.4b0 0.300 0.080 0.024 0.085
74/02/03 10 40 9.400 0.400 0.025 0.065 0.095
74/03/03 10 40 8.800 1.400 0.020 0.065
74/UJ/24 10 50 2.500 0.875 0.047 0.012 u.027
74/04/07 10 45 0.200 0.300 0.005 O.OOD
74/05/05 10 40 6.600 0.700 0.050 0.012 0.045
-------
STORET RETRIEVAL DATE 75/10/23
171 ’ .81
39 4 ‘.5.0 088 48 10.0
UNNAMED C E .K
17 7.5 A GENTA
T/OECATU LAPcE
MACON Co H Y 25 BROG 2.4 MI N
L ILYALES 211120’.
4 0000 FEET
OF OAKLEY
DEPT 1
00630
00625
00610
00671
00665
DATE
TIME
DLPTH
NO2 NO3
TOT KJEL
NH3—N
PHOS—DIS
PHOS—TOT
FROM
OF
N—TOTAL
N
TOTAL
O THO
TO
DAY
FFET
MG/L
MG/L
MG/L
MG/L P
MG/L
73/0b/02
10
30
b.800
2.520
0.069
0.025
0.040
73/07/07
10
44
7.800
1.380
0.046
0.046
0.110
73/08/0’.
10
00
5.000
0.180
0.044
0.050
0.0 80
73/09/08
10
10
0.440
0.082
0.069
0.240
73/10/14
10
30
0.750
0.650
0.022
0.063
0.128
73/11/04
11
00
0.790
1.100
0.036
0.034
0.U65
73/1 /01
3.400
1.100
0.052
0.040
0.190
74/02/03
11
00
7.400
0.100
0.020
0.03S
0.075
74/03/03
11
00
8.700
1.400
0.030
0.060
74/03/2 ’.
11
00
4.800
0.100K
0.010
0.010
0.015
7’./04/07
11
00
8.000
1.400
0.045
0.045
0.445
7 ’ ./05/05
11
00
6.720
0.300
0.0b5
0.010
0.050
K ‘/ALUt r I’IUWN TO dt.
LL S JHAN I IC ELO
-------
STORET RETRIEVAL DATE 75/10/23
17 14C 1
39 48 10.0 088 53 20.0
BIG CREEK
17 1.5 DECATUR
T/DECATUR LAKL.
HwY 121 HROG 1.4 Mj S OF US HWY 36
I1EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 0O6b
DATE TIME: DEPTH N02&N03 TOT KJEL NH3—N PHOS—DIS PHOS—TOT
FROM OF N-TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/L MG/L P MG/L P
73/Ob/02 10 10 7.700 1.380 0.160 0.040 0.060
7j/07/07 09 15 8.000 1.050 0.110 0.033 0.0 0
73/0 /O4 09 25 4.000 1.100 0.048 0.044 0.060
73/09/08 09 45 1.820 2.100 0.096 0.550 0.Y20
73/10/14 09 30 0.640 0.800 0.190 0.066 0.180
73/11/04 09 25 2.600 0.250 0.034 0.038 0.095
73/12/01 3.800 0.800 0.052 0.044 0.195
74/02/03 09 25 8.200 0.200 0.025 0.030 0.030
74/03/03 09 25 .700 1.700 0.025 0.065
74/03/24 09 20 0.940 0.300 0.050 0.0 15 0.035
74/04/07 09 25 0.220 0.400 0.005 0.010
74/05/05 09 25 6.600 0.200 0.080 0.010 0.050
-------
STOi LT RETRIEVAL DATE 75/10/23
1 71401
39 47 0.0 088 52 40.0
FINLEY CP EEK
17 7. DECATUN
J/DL.CATUN LAKE
SEC NO B DG 1.5 N OF
11EPALES
4
MT flON
2111204
0000 FEET DEPTH
00630
00625
00610
00671
00665
NO2 NO3
TOT KJEL
NH3—N
PHOS—DIS
PHOS—TOT
N-TOTAL
N
TOTAL
ORTi-iO
MG/L
MG/L
MG/L
MG/L P
MG/L P
DATE
FROM
TO
7 3/0 6/0 2
7 3/0 7/07
73/08/04
73/09/08
73/10/14
73/11/04
73/12/01
74/0 1/06
74/02/03
74/03/03
74/03/24
74/04/07
74 / 05/05
TIME DEPTH
OF
DAY FEET
09 50
09 00
09 00
09 20
08 53
09 05
09 05
09 0
09 05
u9 05
09 00
09 05
09 05
7.200
8.800
4.000
0.530
0.750
4.716
6.600
7.560
7.500
8.900
0.960
1.600
6.600
0.660
2.900
0.360
1.050
0.700
1.150
0.100K
0.900
0.800
2.000
0.300
0.100
0.200
0.198
0.147
0.023
0.078
0.032
0.250
0.036
0.058
0.025
0.030
0.0 70
0.040
0.605
0.280
0.100
2.400
0.065
0.990
0.184
0.066
0.115
0.060
0.015
0.005K
0.010
• 700
0. 350
0.190
2.600
0.140
I • 100
0.345
0.100
0.260
0.040
0.005
0.055
K VALUE i NOWN EU .
LESS 1 HAN 1N )IC\TE1)
-------
STORET RETRIEVAL DATE 75/10/23
1 714t:1
40 02 20.0 088 50
UNNAMED STREAM
17 15 MOROA
T/DECATJR LAKE
2NDRY RD 8ROG 5 MI
1 1EPALES
4
E OF MAROA
211 1204
0000 FEET DEPTH
DATE
TIME
DEPTH
NO2 .NO3
TOT
KJEL
NH3—N
FROM
OF
N—TOTAL
N
TOTAL
TO
DAY
FEET
MG/L
MG/L
42.0
73/06/02 14 15
73/07/07 13 10
73/08/04 13 35
73/09/08 15 00
73/10/14 16 05
73/11/04 14 30
73/12/01
74/02/03 14 30
74/03/03 14 30
74/03/24 14 35
74/04/07 14 30
74/05/05 14 30
8.000
9.600
5.000
0.490
0 .660
4.500
5.300
7.000
8.80 0
4.800
7.980
6.720
o • 750
0.100K
o • lOOK
1.380
2.500
0.600
0.100K
0 • 700
4.600
0.400
1.400
0.700
00671
I HOS—D IS
ORTHO
MG/L P
0.015
0.0 13
0.021
0.052
0.082
C..016
0 • 020
0.040
0.060
0.015
0.0 35
0.010
0.021
0.019
0.005K
0.084
0.460
0.0 22
0.016
0.075
0.027
0.035
0.0 50
0.315
00665
Pf-iOS—TOT
MG/L P
0.0 15
0.025
0.045
0.180
0. 2u
0,0 80
0 • 1 70
0.0 90
0.025
0.105
0.060
K VALUE. KNOWN TO H
LL S IHt4N IN’)ICATED
-------
S1ORET WETRIEVAL DATE 75/10/23
1 1 14F
‘.0 02 25.0 088 47 50.0
F 1ENDS Ci EEK
17 15 MOr OA
T/DECATU . LAKE
2NDWY HL) 8RDG a M I
1 IEPALES
4
OAT L
Ft OM
TO
73/06/02
7 3/0 7/0 7
73/0 ai 04
73/09/08
73/10/14
73/1 1/04
73/12/01
74/02/03
74/03/03
74/03/24
74/04/07
74/05/05
TIME DEPTH
OF
DAY FEET
14 06
13 00
13 25
14 15
16 30
1’. 55
14 55
1’. 55
14 50
14 55
14 55
€ OF MAPOA
2111204
0000 FEET DEPTH
00630
N02&N03
N-TOTAL
MG / L
a. ioo
9.500
5.500
0.500
3.470
1.360
5.500
6.900
8.900
2.900
2.400
6.600
00625
TOT KJEL
N
MG/L
0.420
0.100K
1.320
1.300
0.450
0.700
0.500
0.400
1.900
0.100K
0.100K
0.200
00610
NH3—N
TOTAL
HC,/L
0.027
0.0 13
0.046
0.075
0.046
0.0 13
0.040
0.040
0.015
0.030
0.015
0.050
00671
PHOS—D1S
O I rIO
MG/L P
0.009
0.009
0.012
0.046
0.0 54
0.012
0.036
0.040
0.065
0.020
0.005
0.010
00665
PHOS—TOT
MG/L P
0.025
0 .025
0.030
0 • 165
0 • 150
0.110
0.190
0.0 80
0.025
0 .005K
0.055
‘I4LUL rSNOVN To d .
LLSS IH N P 1DICAELL)
-------
STOREE RETRIEVAL DATE 75/10/fl
1714 ‘31
3’ 55 00.0 088 47 20.0
UNNAMED STREAM
17 1.5 ARGENTA
T/DECATUk LAKE
2NDRY RD BRDG 4M 1 NW OF CERRO GORDO
IIEPALES 2111204
0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH N02&N03 TOT KJEL NH3—N PHOS—DIS PHOS—TOT
FROM OF N-TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/L MG/L P MG/L
73/06/02 11 00 5.200 0.855 0.046 0.110 0.130
73/07/07 10 56 7.000 0,600 0.018 0.082 0.135
73/08/04 10 35 3.600 0.250 0.078 0.087 0.130
73/09/08 11 00 0.770 1.050 0.100 0.168 0.250
73/10/14 10 14 0.470 0.750 0.033 0.052 0.145
73/11/04 10 15 1.400 0.750 0.011 0.280 0.360
73/12/01 3.300 0.400 0.020 0.130 0.330
74/02/03 10 15 7.000 0.300 0.020 0.040 0.072
74/03/03 10 45 8.900 1.700 0.015 0.065
74/03/24 10 13 5.040 0.100K 0.005K 0.015 0.030
74/04/07 10 15 8.000 1.100 C.040 0.035 0.12u
74/05/05 10 15 6.500 0.400 0.145 0.010 0.055
K VALUE r NO N ID 3E
LLSS THAN INDIcArLO
-------
STORET RETRIEVAL DATE 75/10/23
1714H1
39 58 58.0 088 39 00.0
wILLOW BRANCH
17 15 3EMENI
T/DECATUR LAKE
2NDRY RD BROG 4.5
I LEPALES
4
MI SW OF MONTICELLO
2111204
0000 FEET DEPTH
00630
00625
00610
00671
00665
DATE
TIME
DEPTH
NO2 NO3
TOT KJEL
Nd3-N
PtIOS—DIS
P1105—TOT
FROM
OF
N—TOTAL
N
TOTAL
ORTHO
TO
UAY
FEET
MG/L
MG/L
MC,/L
MG/L P
M&/L
73/06/02
11
30
8.500
0.640
0.092
0.019
0.047
73/07/07
12
08
9.500
0.100K
0.016
0.019
0.055
73/08/04
13
00
5.450
0.240
0.027
0.060
7i/09/0
13
45
2.200
1.050
0.022
0.038
0.13
74/10/14
1’.
30
0.500
0.750
0.032
0.058
0.145
73/11/04
14
00
3.200
0.450
0.018
0.030
0.060
73/12/01
4.800
0.100K
0.024
0.028
0.37
74/02/03
1’.
00
8.600
0.600
0.035
0.080
0.150
74/03/03
14
00
8.800
1.500
0.015
0.060
74/03/24
14
05
0.940
0.800
0.070
0.015
0.035
74/04/07
74/05/05
14
14
00
00
8.000
6.600
1.200
0.200
0.040
0.095
0.035
(.012
0.150
0.057
K V LUtL ‘ 0wN To E
LESi ]Hi.N IN’)ICPEEL)
-------
STORET RETRiEVAL DATE 75/10/23
1714J1
39 46 30.0 088 57 27.0
SAND CREEK
17 7.5 DECATUR
T/DECATUR LAKE
2NDRY RD 8RDG 3 MI E OF ELWIN
11EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO2 NO3 TOT KJEL NH3—N PHOS—DIS PHOS-TOT
FROM OF N—TOTAL N TOTAL ORTt-IO
TO DAY FEET MG/L MG/L MG/L MG/L P MG/L P
73/06/02 09 35 9.600 0.’.80 0.105 0.030 0.055
73/07/07 08 40 10.500 1.700 0.078 0.033 0.075
73/08/04 08 35 5.900 0.005K 0.058 0.100
73/09/08 08 50 0.560 3.020 0.176 0.160 0.630
73/10/14 09 45 0.550 1.600 0.075 0.058 0.135
73/11/04 08 50 6.300 0.100K 0.006 0.025 0.040
73/12/01 7.300 0.100K 0.016 0.026 0.180
74/u /03 03 50 8.800 0.300 0.017 0.045 0.070
74/03/03 08 50 8.800 1.600 0.010 0.060
74/03/24 08 50 0.920 0.200 0.065 0.010 0.050
74/04/07 08 50 0.200 3.015 0.005 0.005
74/05/05 08 50 6.720 0.400 0.055 0.017 0.055
K VALUL KNUwN TO r
LESS lt-IMN INDICATIL )
-------
STORET P ETRIEVAL DATE 75/10/23
P004300
1714AA A ,171 .AA
39 58 58.0 088 40 23.0
MONTICELLO WASTE WATE
17199 HIATT COUNTY
T/uECATU LA cE
SANGAMON kI’IL
11EI ALES
(4
2141204
0000 FEET
DEPTH
00630
00625
00610
00671
00665
50051
50053
DATE
TIME
DLPTH
N02&N03
TOT KJEL
Nr13—N
PhOS—DIS
PHOS—TOT
FLOW
CONDUIT
FROM
OF
N—TOTAL
N
TOTAL
Of THO
RATE
FLO —MGD
IC)
DAY
FEET
MG/L
MG/L
MG/L
MG/L P
MG/L P
INST MGD
MONIrILY
73/07/11
1.700
3.400
0.063
6.400
6.800
0.410
u.s15
73/08/03
08
30
3.400
2.200
0.038
4.400
4.715
0.459
0.620
73/09/10
.100
2.700
0.091
8.900
9.300
0.240
0.190
73/10/03
08
30
3.300
6.600
0.050
.400
8.600
0.232
0.200
73/11/08
13
05
1.600
7.250
0.150
7.500
8.100
0.224
0.210
73/12/06
3.600
2.700
0.081
2.900
3.450
0.561
0.281
74/01/03
10
30
0.760
10.000
).040K
3.800
4.603
0.390
0.400
74/0 /05
15
00
1.520
7.500
0.180
3.600
4.903
1.500
0.875
74/03/11
09
00
4.300
4.000
0.0b0i
3.700
4.500
1.120
1.000
74/05/06
08
45
1.840
7.100
0.160
4.400
5.000
0.858
1.000
7’./0b/06
13
10
0.440
8.300
0.092
4.200
4.514
0.794
1.000
74/07/11
08
30
0.024
7.350
0.180
4.900
6.675
0.556
0.625
74/08/02
14
00
1.200
10,000
0.240
6.200
7.400
0.829
0.31S
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/10/23
K VALUE KNOWN TO BE
LESS THAN INDICATED
171’+OA AS I7 I ’.DA
39 46 54.0 088 52 57.0
MOUNT LION
17 7.5 DECATUR
1/DECATUR LAKE
FINLEY CREEK
J 1EPALES 2141204
4 0000 FEET
P003000
DEPTH
DATE
TIME
DEPTH
NO2 .NO3
TOT KJEL
NH3—N
PHOS—DIS
PHOS-TOr
FLOW
CONDUIT
FROM
OF
N—TOTAL
N
TOTAL
ORTt-iO
RATE
TO
DAY
FEET
FIG/L
M&/L
MG/I
MG/L P
MG/L P
INST MGD
FLO —MGU
MONEHLY
73/07/16
08 00
CP(T)—
3.900
4.600
0.085
10.300
13.3t0
0.210
0.266
7i/07/16
16 00
73/08/02
08 00
CP(T)—
2.600
1.700
0.040
3.900
0.320
73/08/02
16 00
73/09/03
08 00
CP(T)—
1.000
4.500
14.000
1’..500
0.160
73/09/03
16 00
0.240
73/10/01
08 00
10.800
2.200
0.086
11.000
16.100
0.170
73/11/02
08 00
0.160
CP(T)—
0.340
12.000
2.000
14.700
16.000
0.190
73/11/02
16 00
74/QL/04
03 00
0.350
74/03/04
08 00
7.920
1.100
0.050
5.400
6.400
0.440
0.380
74/04/08
08 00
8.400
1.500
0.053K
6.200
7.700
0.500
74/05/01
08 00
5.520
3.200
0.120
10.000
11.000
0.300
0.400
0.400
74/06/Os
08 00
6.300
2.100
0.070
6.500
7.300
0.440
0.530
74/08/09
08 30
11.200
2.700
0.084
13.000
13.500
0.210
0.210
74/09/10
11 00
4.700
4.100
0.050
11.500
0.240
74/10/02
09 00
7.760
7.900
0.083
------- |