Station list     Available data
ILLINOIS RIVER BASIN


05537500       LONG RUN NEAR LEMONT, IL

 

LOCATION.-- Lat 41°38'33", long 87°59'57" (NAD of 1927), in SW1/4SE1/4 sec.32, T.37 N., R.11 E., Cook County, Hydrologic Unit 07120004, on left bank at downstream side of bridge on State Street, 2 mi south of Lemont, and at mile 5.4.
 

DRAINAGE AREA.-- 20.9 mi2.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: July 1951 to current year.
 

STAGE: Water years 1994 to current year.
 

REVISED RECORDS.-- WSP 1338: 1952(M). WDR IL-75-1: Drainage area.
 

GAGE.-- Water-stage recorder and phone telemeter, and crest-stage gage. Datum of gage is 637.20 ft above NGVD of 1929.
 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 5,310 ft3/s, July 18, 1996, from rating curve extended above 2,800 ft3/s, gage height, 11.10 ft; no flow at times in most years.
 

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 1.8 2.8 2.3 3.0 e1.3 e1.4 6.1 74    16      0.98 39    81   
2 2.4 2.7 2.0 2.6 e1.5 e1.4 4.3 52    11      0.81 42    65   
3 2.8 2.8 1.8 2.2 e1.8 e1.3 3.9 22    24      0.74 52    27   
4 12    2.8 1.6 2.0 e2.4 e1.3 64    17    16      0.71 82    14   
5 12    2.9 1.6 2.2 e2.0 e1.6 101    115    11      5.2   36    11   
 
6 5.3 4.3 1.6 2.3 e1.7 e2.4 36    42    9.5   5.2   22    8.1
7 3.5 3.2 1.6 2.0 e1.5 e3.5 26    22    9.4   14      24    7.0
8 2.2 2.9 1.7 2.0 e1.4 e5.6 24    15    8.0   19      17    6.0
9 2.0 2.7 1.6 2.1 e1.3 e14    19    158    8.4   16      14    4.5
10 2.0 4.3 1.5 1.8 e1.2 e12    15    70    7.1   11      11    3.9
 
11 1.9 3.9 1.4 1.6 e1.2 e10    13    87    6.9   7.9   11    3.3
12 2.2 2.8 1.4 e1.6 e1.2 e15    11    48    6.4   6.4   18    3.0
13 2.8 2.4 1.4 e1.5 e1.3 e23    9.8 28    5.3   3.3   12    3.4
14 3.0 2.5 1.4 e1.5 e1.3 e16    8.8 21    4.5   2.0   9.8 9.3
15 2.7 4.7 1.5 e1.4 e1.3 11    8.0 18    3.4   39      7.9 7.4
 
16 2.4 3.6 1.5 e1.4 e1.2 9.3 7.0 14    2.6   20      6.5 4.2
17 1.8 2.9 1.4 e1.4 e1.2 9.6 6.9 12    2.2   13      6.4 2.9
18 1.9 3.1 15    e1.3 e1.2 8.2 6.7 10    2.2   48      5.1 2.2
19 2.1 3.0 23    e1.3 e1.3 8.6 6.5 9.2 6.3   15      3.8 2.0
20 2.5 2.9 9.8 e1.3 e1.4 15    6.6 47    3.1   9.6   3.1 1.9
 
21 2.3 2.8 6.9 e1.2 e1.8 19    6.3 21    1.8   15      2.6 2.0
22 2.1 4.8 5.4 e1.2 e2.7 11    5.3 13    1.5   10      2.4 5.4
23 2.5 2.9 4.4 e1.2 e2.2 9.2 4.6 10    1.1   7.1   1.9 4.3
24 2.2 2.6 3.2 e1.2 e1.9 7.8 3.8 8.2 1.1   4.7   1.9 4.0
25 3.1 2.4 3.4 e1.1 e1.7 7.1 3.5 7.3 1.0   3.3   1.8 6.0
 
26 4.0 2.2 2.9 e1.1 e1.6 6.4 3.4 6.8 0.93 2.3   1.7 5.1
27 3.3 2.2 2.9 e1.1 e1.5 5.3 3.3 6.2 1.9   504      1.8 15   
28 2.9 2.3 2.6 e1.1 e1.5 6.4 3.3 6.3 1.1   424      2.1 7.6
29 2.6 2.6 2.5 e1.1 ---    13    3.0 9.9 1.3   173      18    5.2
30 3.1 2.6 2.9 e1.2 ---    8.5 11    12    1.3   80      15    3.4
 
31 2.9 ---    3.6 e1.2 ---    7.2 ---    52    ---      48      9.8 ---   

TOTAL 100.3 90.6 115.8 49.2 43.6 271.1 431.1 1033.9 176.33 1509.24 481.6 325.1
MEAN 3.24 3.02 3.74 1.59 1.56 8.75 14.4 33.4 5.88 48.7 15.5 10.8
MAX 12 4.8 23 3.0 2.7 23 101 158 24 504 82 81
MIN 1.8 2.2 1.4 1.1 1.2 1.3 3.0 6.2 0.93 0.71 1.7 1.9
CFSM 0.15 0.14 0.18 0.08 0.07 0.42 0.69 1.60 0.28 2.33 0.74 0.52
IN. 0.18 0.16 0.21 0.09 0.08 0.48 0.77 1.84 0.31 2.69 0.86 0.58
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 2003, BY WATER YEAR (WY)
MEAN 10.1 13.7 16.2 16.5 21.8 34.0 36.5 24.1 18.4 12.1 5.75 7.75
MAX 163 71.9 92.2 75.5 104 131 86.9 74.5 89.6 126 27.4 74.9
(WY) 1955 1986 1983 1993 1997 1979 1975 1966 1993 1996 1972 1961
MIN 0.000 0.006 0.016 0.020 0.028 2.19 1.69 2.83 0.73 0.048 0.000 0.000
(WY) 1965 1972 1964 1977 1964 1964 1963 1958 1988 1961 1964 1963

SUMMARY STATISTICS FOR 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1951 - 2003
ANNUAL TOTAL 6585.4   4627.87
ANNUAL MEAN 18.0   12.7   18.0      
HIGHEST ANNUAL MEAN 39.9       1993
LOWEST ANNUAL MEAN 3.37     1963
HIGHEST DAILY MEAN 569          May 12 504          Jul 27 2190          Jul 18 1996
LOWEST DAILY MEAN 1.0       Aug 10 0.71     Jul 4 0.00     A
ANNUAL SEVEN-DAY MINIMUM 1.4       Dec 11 0.99     Jun 28 0.00     Aug 27 1953
MAXIMUM PEAK FLOW 1500          Jul 27 5310      B Jul 18 1996
MAXIMUM PEAK STAGE 8.09     Jul 27 11.10     Jul 18 1996
INSTANTANEOUS LOW FLOW 0.64     Jul 3, 4
ANNUAL RUNOFF (CFSM) 0.86 0.61 0.86    
ANNUAL RUNOFF (INCHES) 11.72 8.24 11.71    
10 PERCENT EXCEEDS 37      22      42         
50 PERCENT EXCEEDS 5.2   3.4   5.3      
90 PERCENT EXCEEDS 1.7   1.3   0.14    

A - At times in most years.

B - From rating curve extended above 2,800 ft3/s.


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Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data