Station list     Available data
ILLINOIS RIVER BASIN


05536340       MIDLOTHIAN CREEK AT OAK FOREST, IL



LOCATION.-- Lat 41°36'51", long 87°43'46", in SE1/4NW1/4 sec.15, T.36 N., R.13 E., Cook County, Hydrologic Unit 07120003, on right bank at downstream side of bridge on Kilbourn Avenue in Oak Forest, and at mile 5.9.

DRAINAGE AREA.-- 12.6 mi2.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: October 1950 to current year. Prior to October 1974, records published with those for streams in the St. Lawrence River basin (WSP 1307, 1727, 1911, 2111, WDR-IL 1971-74).
 

STAGE: Water years 1994-2000.

REVISED RECORDS.-- WSP 1337: 1951-53: WSP 1911: Drainage area.

GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 620.41 ft above sea level (Cook County Highway Department bench mark).

REMARKS.-- Diurnal fluctuation at low flow caused by small industrial plants upstream. Retention pond 1.0 mi upstream detains water during periods of heavy runoff and gradually releases water during the recession. Flow bypassed gage from Nov. 21, 1962, to Mar. 2, 1963, due to diversion 1.0 mi upstream.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 627 ft3/s, Apr. 22, 1973, gage height, 7.67 ft; maximum gage height, 9.00 ft, July 13, 1957, discharge, 550 ft3/s; no flow at times in most years.

REMARKS FOR CURRENT YEAR.-- Records fair except those for estimated daily discharges, which are poor.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 4.9   .67 6.6 2.9 e1.7 4.9 2.3 5.9 120    5.7 8.7 1.7
2 3.4   .97 6.4 1.7 e1.8 3.9 1.8 5.7 36    4.4 5.5 1.6
3 17      1.6   8.5 2.7 e1.9 3.5 1.7 3.8 15    33    12    1.2
4 32      .91 29    4.5 e2.0 3.0 6.1 3.3 10    13    4.2 1.2
5 13      1.3   81    3.3 e1.8 2.4 7.1 3.1 27    8.2 9.2 1.0
 
6 5.2   .94 41    2.6 e1.6 2.4 4.2 2.8 14    7.4 18    1.2
7 2.4   .52 11    2.3 e1.6 2.5 9.0 2.3 8.5 7.3 28    1.4
8 5.8   .35 5.1 1.9 e1.9 2.3 16    5.1 6.5 5.4 8.3 1.3
9 12      .92 3.2 5.6 2.4 2.8 6.6 22    5.4 3.4 5.4 1.3
10 5.0   .86 2.8 12    5.0 3.1 4.5 25    2.6 62    3.1 2.0
 
11 2.2   .93 2.4 13    9.7 2.5 7.9 17    2.7 53    2.4 85   
12 1.3   .91 1.7 6.0 7.1 1.8 4.7 11    56    20    1.8 167   
13 .66 .93 1.3 3.5 4.6 1.7 3.8 8.1 101    13    1.3 81   
14 .77 .67 2.6 2.7 4.0 2.6 3.5 4.7 142    7.4 2.5 33   
15 .95 .45 6.5 2.6 3.8 3.3 3.0 5.1 171    3.8 2.1 16   
 
16 1.0   .71 9.1 2.0 3.9 6.2 9.7 4.5 120    2.4 1.5 11   
17 1.0   .75 5.5 1.8 4.5 4.1 74    4.1 47    2.4 29    2.7
18 1.3   .82 4.4 e1.7 4.1 4.6 29    11    23    2.4 18    12   
19 1.4   1.1   3.4 e1.7 5.0 11    36    29    21    3.3 4.3 9.6
20 1.5   .98 e3.0 e1.6 5.7 20    88    8.7 57    2.2 3.3 6.3
 
21 1.5   .56 e2.5 e1.6 6.9 9.2 115    5.2 141    2.1 4.0 6.8
22 1.1   .39 e2.0 e1.5 38    5.1 59    9.5 59    2.0 2.6 4.9
23 1.1   25      e1.7 e1.5 39    4.0 28    7.1 26    3.4 2.3 21   
24 .79 22      e1.4 e1.4 51    3.5 18    4.0 28    1.8 2.1 14   
25 .61 8.7   e1.2 e1.4 39    3.2 11    3.1 109    1.8 2.2 7.4
 
26 .94 5.7   e1.2 e1.4 17    3.3 8.4 2.6 37    1.7 1.7 4.3
27 1.3   4.5   e1.3 e1.4 12    5.7 6.1 5.4 19    2.3 1.4 5.1
28 1.4   4.0   e1.6 e1.4 7.5 6.0 5.5 48    13    5.7 1.2 5.8
29 1.1   3.9   e1.8 e1.4 6.0 3.9 8.4 16    13    2.5 1.6 3.0
30 .88 5.7   e2.0 e1.5 ---    3.1 4.5 17    10    16    1.6 1.6
 
31 .78 ---      2.1 e1.6 ---    2.7 ---    53    ---    11    1.6 ---   

TOTAL 124.28 97.74 253.3 92.2 290.5 138.3 582.8 353.1 1440.7 310.0 190.9 511.4
MEAN 4.01 3.26 8.17 2.97 10.0 4.46 19.4 11.4 48.0 10.0 6.16 17.0
MAX 32 25 81 13 51 20 115 53 171 62 29 167
MIN .61 .35 1.2 1.4 1.6 1.7 1.7 2.3 2.6 1.7 1.2 1.0
CFSM .32 .26 .65 .24 .80 .35 1.54 .90 3.81 .79 .49 1.35
IN. .37 .29 .75 .27 .86 .41 1.72 1.04 4.25 .92 .56 1.51

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 2000, BY WATER YEAR (WY)
MEAN 6.85 9.99 11.2 10.7 13.5 22.2 21.7 15.8 13.5 8.96 6.07 7.43
MAX 70.9 40.7 70.9 43.9 68.9 86.9 53.5 46.1 60.0 67.8 22.0 43.6
(WY) 1955 1986 1983 1993 1997 1979 1973 1990 1981 1996 1979 1977
MIN .035 .17 .000 .000 .000 3.13 1.41 1.84 .88 .29 .25 .11
(WY) 1964 1965 1963 1963 1963 1964 1963 1968 1965 1964 1966 1963

SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1951 - 2000
ANNUAL TOTAL 4971.65 4385.22
ANNUAL MEAN 13.6   12.0   12.3      
HIGHEST ANNUAL MEAN 21.0       1993
LOWEST ANNUAL MEAN 2.68     1963
HIGHEST DAILY MEAN 175          Jan 24 171          Jun 15 448          Oct 11 1954
LOWEST DAILY MEAN .35     Nov 8 .35     Nov 8 .00     A
ANNUAL SEVEN-DAY MINIMUM .71     Sep 21 .75     Nov 12 .00     Nov 22 1962
INSTANTANEOUS PEAK FLOW 330          Sep 11 627      B Apr 22 1973
INSTANTANEOUS PEAK STAGE 5.12     Sep 11 9.00 C Jul 13 1957
INSTANTANEOUS LOW FLOW .24     Nov 8
ANNUAL RUNOFF (CFSM) 1.08 .95 .98    
ANNUAL RUNOFF (INCHES) 14.68 12.95 13.26    
10 PERCENT EXCEEDS 32      29      31         
50 PERCENT EXCEEDS 4.8   4.0   3.6      
90 PERCENT EXCEEDS .91 1.2   .52    
A - At times in most years.
B - Gage height, 7.67 ft.
 C - Discharge, 550 ft3/s.


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Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data