Station list     Available data
ILLINOIS RIVER BASIN


05535000       SKOKIE RIVER AT LAKE FOREST, IL



LOCATION.-- Lat 42°13'57", long 87°50'41", in NW1/4SW1/4 sec.4, T.43 N., R.12 E., Lake County, Hydrologic Unit 07120003, on right bank at upstream side of bridge on Westleigh Road at Lake Forest and at mile 13.1.

DRAINAGE AREA.-- 13.0 mi2.

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

DISCHARGE: October 1951 to current year. Prior to October 1952, records published with those for streams in the St. Lawrence River Basin (WSP 1237).
 

STAGE: Water years 1994-2001.

REVISED RECORDS.-- WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 648.75 ft above sea level.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 496 ft3/s, Feb. 21, 1997, gage height, 7.24 ft; maximum gage height, 8.35 ft, July 22, 1982; no flow many days in 1959.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 18      .62 5.3   e2.9 35    15    7.7 1.2   44      .30 e.43 .91
2 5.1   1.4   5.1   e2.8 24    14    4.8 1.0   41      .23 e26      .72
3 3.3   1.2   3.7   e2.9 21    13    3.4 .51 26      .24 e10      .47
4 79      .77 2.7   e3.0 11    9.3 2.7 .45 18      .51 e2.5   .39
5 39      .73 2.2   e3.2 6.7 6.4 7.8 .66 29      .28 e2.3   .39
 
6 50      3.7   1.5   e3.4 4.7 5.3 28    .41 25      .13 e1.8   1.1  
7 26      34      e1.2   e3.5 4.3 3.9 16    7.6   18      47      .20 6.4  
8 15      14      e1.1   e3.4 24    2.5 15    4.0   12      11      .18 3.7  
9 6.4   79      e1.0   e3.4 224    2.0 19    1.6   8.6   6.0   10      10     
10 4.2   49      .93 e3.6 115    1.9 11    13      6.1   2.0   18      7.5  
 
11 2.7   24      e.92 e4.0 51    4.2 43    160      4.4   1.1   2.3   3.5  
12 2.0   17      e.98 e5.3 33    6.5 55    51      73      .72 1.1   1.6  
13 1.4   19      e1.0   7.5 26    8.0 26    27      37      .49 2.2   .69
14 1.0   13      e1.3   10    28    5.9 18    68      22      .40 .84 .47
15 .85 8.4   e2.1   22    24    27    16    64      16      .32 .34 .33
 
16 .89 5.2   e2.5   24    21    33    14    32      11      .32 22      .31
17 .75 3.4   e2.8   20    16    29    12    20      8.2   23      8.5   .39
18 e1.0   2.2   e2.8   18    18    27    7.9 13      8.7   10      4.0   .61
19 e1.2   1.8   e2.7   13    11    29    4.7 8.5   2.7   4.9   36      255     
20 e1.3   1.6   e2.5   6.9 11    27    16    6.4   1.5   1.9   11      87     
 
21 e1.3   2.2   e2.3   e5.4 9.6 26    24    8.8   2.5   1.1   6.4   80     
22 e1.2   .84 e2.2   e4.3 11    20    18    5.8   2.1   5.1   24      43     
23 e1.7   .62 e2.1   3.4 4.0 15    22    3.7   1.5   8.8   37      61     
24 e3.4   .56 e2.0   e3.0 34    11    14    6.7   1.2   5.8   16      49     
25 e2.5   .88 e2.0   e2.7 81    6.7 8.7 3.2   1.0   5.5   19      29     
 
26 e1.5   7.2   e2.0   2.4 40    4.0 5.4 11      .99 3.7   14      22     
27 e3.4   4.6   e2.1   3.4 28    3.1 3.1 74      .75 1.3   5.0   19     
28 e2.8   3.5   e2.2   5.0 19    3.4 2.2 48      .56 .63 4.3   17     
29 e1.5   4.8   e2.4   9.7 ---    2.8 1.5 36      .45 .50 2.2   16     
30 e.84 4.4   e2.7   53    ---    3.7 1.2 21      .37 .43 1.1   14     
 
31 e1.0   ---      e2.9   47    ---    4.6 ---    19      ---      .63 2.5   ---     

TOTAL 280.23 309.62 69.23 302.1 935.3 370.2 428.1 717.53 423.62 144.33 291.19 731.48
MEAN 9.04 10.3 2.23 9.75 33.4 11.9 14.3 23.1 14.1 4.66 9.39 24.4
MAX 79 79 5.3 53 224 33 55 160 73 47 37 255
MIN .75 .56 .92 2.4 4.0 1.9 1.2 .41 .37 .13 .18 .31
CFSM .70 .79 .17 .75 2.57 .92 1.10 1.78 1.09 .36 .72 1.88
IN. .80 .89 .20 .86 2.68 1.06 1.23 2.05 1.21 .41 .83 2.09
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1952 - 2001, BY WATER YEAR (WY)
MEAN 7.11 10.4 10.9 9.85 13.7 22.5 24.9 15.4 12.5 8.36 7.21 8.51
MAX 30.0 44.5 53.7 42.4 35.5 82.3 56.9 54.3 41.6 33.3 41.7 61.7
(WY) 1987 1986 1983 1974 1997 1979 1983 1996 1996 1993 1972 1986
MIN .83 .73 1.20 .29 1.08 4.01 5.95 2.26 .91 1.29 1.26 1.12
(WY) 1957 2000 1959 1959 1963 1956 1986 1988 1988 1991 1955 1979

SUMMARY STATISTICS FOR 2000 CALENDAR YEAR FOR 2001 WATER YEAR WATER YEARS 1952 - 2001
ANNUAL TOTAL 5710.44 5002.93
ANNUAL MEAN 15.6   13.7   12.6      
HIGHEST ANNUAL MEAN 22.2       1974
LOWEST ANNUAL MEAN 3.54     1963
HIGHEST DAILY MEAN 241          May 19 255          Sep 19 444          Sep 27 1986
LOWEST DAILY MEAN .53     Sep 6 .13     Jul 6 .00     A
ANNUAL SEVEN-DAY MINIMUM .92     Sep 1 .29     Jun 30 .00     Jan 3 1959
MAXIMUM PEAK FLOW 392          Sep 19 496      B Feb 21 1997
MAXIMUM PEAK STAGE 6.44     Sep 19 8.35     Jul 22 1982
INSTANTANEOUS LOW FLOW .11     C
ANNUAL RUNOFF (CFSM) 1.20 1.05 .97    
ANNUAL RUNOFF (INCHES) 16.34 14.32 13.16    
10 PERCENT EXCEEDS 37      34      28         
50 PERCENT EXCEEDS 5.1   4.7   5.2      
90 PERCENT EXCEEDS 1.3   .68 1.4      

A - Many days in 1959.
B - Gage height, 7.24 ft.
C - July 6, 7, August 8, 9.


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Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data