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.--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).

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

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

REMARKS.--Records good except those for estimated daily discharges, which are poor. 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. Gage-height telemeter at station.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 9.9   5.8 5.7   e.76 13    5.9 2.7 22    66    15    5.7 2.4  
2 5.3   4.2 2.8   e.68 32    5.9 2.4 10    159    6.2 3.2 2.1  
3 19      4.8 2.4   e.80 30    13    1.9 6.2 95    3.8 3.2 2.1  
4 6.1   5.6 2.2   e1.0   15    7.1 8.0 5.6 24    3.1 3.2 1.9  
5 2.8   8.3 2.0   e.98 9.5 6.7 4.0 5.8 11    2.6 3.6 2.2  
 
6 7.9   4.9 22      e.96 9.7 20    6.6 9.6 7.1 3.0 2.7 1.8  
7 6.7   3.2 68      e.95 6.3 16    4.0 7.8 7.9 3.2 2.5 1.3  
8 3.2   2.5 28      e.93 4.8 13    4.8 4.7 7.1 2.7 3.2 2.1  
9 2.0   3.5 14      e.91 7.5 10    67    7.0 3.8 2.8 2.7 2.0  
10 1.4   64    8.4   e.89 5.2 11    22    5.0 4.3 2.2 2.8 2.1  
 
11 1.0   42    4.9   e.88 6.8 12    25    3.9 7.8 1.5 2.7 2.1  
12 .95 20    3.4   e.87 16    13    11    34    16    1.6 16    2.6  
13 1.3   14    2.5   e.85 6.7 15    7.2 27    40    2.6 19    12     
14 1.2   17    2.1   e.84 5.3 11    5.5 9.8 26    2.8 12    4.8  
15 1.5   7.6 2.0   e.83 5.2 16    27    5.8 12    2.8 6.5 3.2  
 
16 1.9   3.1 1.9   e.82 5.2 30    145    4.5 5.0 2.7 4.8 2.7  
17 9.0   2.9 1.8   e1.9   5.1 50    57    31    4.0 18    4.4 2.6  
18 41      2.5 1.8   e20      4.5 24    10    17    3.5 20    4.4 2.3  
19 14      2.3 1.8   e15      4.1 11    5.9 9.9 3.1 9.4 33    1.9  
20 4.7   2.1 1.5   e12      3.4 7.3 5.7 9.4 2.7 25    10    1.3  
 
21 3.7   1.8 1.4   e11      2.7 5.8 6.7 12    2.7 23    4.1 .83
22 2.1   1.4 1.7   e110      2.6 6.8 42    51    23    43    2.6 .77
23 1.7   1.2 1.5   e150      2.8 4.8 161    33    60    14    4.5 .75
24 1.4   1.9 1.2   175      2.8 4.2 59    27    107    13    46    .75
25 1.1   2.0 .84 123      3.6 4.7 14    16    86    7.6 69    .82
 
26 .76 2.5 .90 72      4.5 4.0 13    7.4 25    6.0 28    .58
27 7.0   1.7 .97 38      11    3.3 66    5.6 17    5.7 15    .48
28 35      1.5 1.4   39      6.4 2.9 151    4.0 11    4.7 5.8 31     
29 19      1.3 2.2   36      ---    2.6 94    3.2 14    4.6 3.5 29     
30 61      5.0 e1.5   30      ---    2.6 39    2.8 4.5 4.8 2.7 11     
 
31 14      ---    e1.1   18      ---    2.5 ---    14    ---    3.5 2.6 ---     

TOTAL 287.61 240.6 193.91 864.85 231.7 342.1 1068.4 412.0 855.5 260.9 329.4 131.48
MEAN 9.28 8.02 6.26 27.9 8.27 11.0 35.6 13.3 28.5 8.42 10.6 4.38
MAX 61 64 68 175 32 50 161 51 159 43 69 31
MIN .76 1.2 .84 .68 2.6 2.5 1.9 2.8 2.7 1.5 2.5 .48
CFSM .74 .64 .50 2.21 .66 .88 2.83 1.05 2.26 .67 .84 .35
IN. .85 .71 .57 2.55 .68 1.01 3.15 1.22 2.53 .77 .97 .39

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 1999, BY WATER YEAR (WY)
MEAN 6.91 10.1 11.2 10.8 13.6 22.5 21.7 15.9 12.8 8.94 6.07 7.23
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 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1951 - 1999
ANNUAL TOTAL 6826.14 5218.45    
ANNUAL MEAN 18.7   14.3       12.3      
HIGHEST ANNUAL MEAN 21.0       1993
LOWEST ANNUAL MEAN 2.68     1963
HIGHEST DAILY MEAN 208          May 8 175              Jan 24 448          Oct 11 1954
LOWEST DAILY MEAN .29     Jul 26 .48         Sep 27 .00     A
ANNUAL SEVEN-DAY MINIMUM .63     Jul 25 .71         Sep 21 .00     Nov 22 1962
INSTANTANEOUS PEAK FLOW 200      B     Apr 23 627      C Apr 22 1973
INSTANTANEOUS PEAK STAGE 4.19 D     Jan 23 9.00 E Jul 13 1957
INSTANTANEOUS LOW FLOW .36         Sep 27
ANNUAL RUNOFF (CFSM) 1.48 1.13     .98    
ANNUAL RUNOFF (INCHES) 20.15 15.41     13.27    
10 PERCENT EXCEEDS 58      34          31         
50 PERCENT EXCEEDS 6.6   5.0       3.6      
90 PERCENT EXCEEDS 1.3   1.3       .51    
A - At times in most years.
B - Gage height, 4.04 ft.
C - Gage height, 7.67 ft.
D - Ice jam.
E - Discharge, 550 ft3/s.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data