Station list     Available data
ILLINOIS RIVER BASIN


05535500       WEST FORK OF NORTH BRANCH CHICAGO RIVER AT NORTHBROOK, IL

 

LOCATION.-- Lat 42°08'18", long 87°50'05" (NAD of 1983), in SW1/4SE1/4 sec.4, T.42 N., R.12 E., Cook County, Hydrologic Unit 07120003, on left bank at upstream side of bridge on State Highway 68 at Northbrook, and at mile 7.9.
 

DRAINAGE AREA.-- 11.5 mi2.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: August 1952 to current year.
 

STAGE: Water years 1994 to current year.
 

GAGE.-- Water-stage recorder, and phone telemeter. Datum of gage is 637.98 ft above NGVD of 1929 (Cook County Highway Department bench mark) (637.75 ft NAVD 1988).
 

REMARKS.-- Effluent from sewage-treatment plant 1.7 mi upstream.
 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,190 ft3/s, Aug. 14, 1987, gage height, 10.10 ft; no flow at times in several years.
 

REMARKS FOR CURRENT YEAR.-- Records fair except those for estimated daily discharges, which are poor. Effluent from sewage-treatment plant averaged about 4.5 ft3/s.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 5.5 37    29    7.8 7.2 28    8.7 5.2 4.8 5.4 2.7 2.2
2 8.4 19    15    17    7.2 31    8.3 5.4 4.1 4.7 2.4 2.2
3 3.8 8.9 10    17    8.2 27    7.3 5.1 4.1 4.7 2.6 2.1
4 4.1 28    8.7 14    11    20    6.8 4.8 8.9 34    2.3 2.0
5 3.8 12    7.2 12    19    16    6.5 5.5 5.4 13    2.2 2.0
 
6 3.9 7.3 14    e10    26    18    6.0 5.3 4.4 6.4 2.0 2.4
7 4.0 5.6 89    e9.0 59    35    5.3 4.7 4.2 4.8 2.1 4.7
8 23    4.8 34    e8.5 44    19    5.1 4.7 3.4 4.3 2.6 5.0
9 6.2 4.1 17    7.5 25    14    4.8 5.9 3.4 3.8 2.1 2.7
10 5.5 3.8 15    8.0 18    13    4.8 5.5 4.6 3.5 2.4 2.5
 
11 5.2 3.9 16    20    15    13    5.0 7.6 4.6 4.0 3.8 2.5
12 4.9 3.7 11    94    13    13    16    8.8 3.5 6.8 30    2.7
13 5.2 3.5 8.1 183    31    10    9.9 8.9 9.3 6.4 5.3 2.7
14 5.0 4.8 6.8 70    50    11    6.8 7.8 5.1 4.9 3.1 4.8
15 7.5 3.7 5.8 38    40    8.9 5.8 6.1 3.9 4.0 3.1 3.7
 
16 5.5 4.2 5.4 25    33    9.9 5.4 5.7 3.7 3.7 2.2 8.9
17 5.8 3.4 4.9 22    21    13    4.8 5.6 3.5 3.9 2.6 2.6
18 5.4 6.6 4.5 15    15    13    5.0 5.8 3.2 4.4 17    2.3
19 5.0 23    4.1 15    13    17    5.1 22    2.8 4.7 6.5 9.6
20 4.9 11    3.9 14    22    15    5.5 22    3.4 49    51    3.5
 
21 4.7 6.6 e3.7 13    22    13    4.8 13    3.3 14    9.1 2.6
22 4.8 5.4 e3.4 e12    20    11    14    9.3 3.4 6.7 5.2 27   
23 37    4.6 e3.2 10    16    12    9.8 7.4 3.8 5.6 4.6 9.9
24 9.8 12    e3.1 8.0 14    10    6.4 7.1 4.1 4.1 4.4 5.0
25 6.1 17    2.9 e8.2 12    14    6.0 e7.2 3.9 15    3.5 9.3
 
26 5.0 15    2.8 e8.3 11    12    6.4 e7.1 3.9 19    2.6 20   
27 4.1 42    2.8 e7.8 11    10    7.1 e7.4 4.7 8.1 3.6 6.2
28 3.6 23    e2.9 7.2 25    9.2 5.1 e7.9 4.9 4.1 2.3 21   
29 4.7 13    3.0 6.5 ---    8.4 4.6 e8.0 4.7 3.1 2.4 10   
30 8.2 23    3.4 6.7 ---    17    4.7 e7.0 5.9 2.5 2.2 5.3
 
31 5.2 ---    12    7.1 ---    14    ---    e6.1 ---    2.3 2.2 ---   

TOTAL 215.8 359.9 352.6 701.6 608.6 475.4 201.8 239.9 132.9 260.9 190.1 187.4
MEAN 6.96 12.0 11.4 22.6 21.7 15.3 6.73 7.74 4.43 8.42 6.13 6.25
MAX 37 42 89 183 59 35 16 22 9.3 49 51 27
MIN 3.6 3.4 2.8 6.5 7.2 8.4 4.6 4.7 2.8 2.3 2.0 2.0
CFSM 0.61 1.04 0.99 1.97 1.89 1.33 0.58 0.67 0.39 0.73 0.53 0.54
IN. 0.70 1.16 1.14 2.27 1.97 1.54 0.65 0.78 0.43 0.84 0.61 0.61
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1952 - 2005, BY WATER YEAR (WY)
MEAN 9.19 11.3 11.8 10.0 14.4 22.8 24.6 17.2 14.4 11.3 10.9 10.2
MAX 59.4 40.4 51.2 40.0 43.2 86.6 57.3 67.3 41.6 59.2 57.5 50.0
(WY) 2002 1986 1983 1974 1997 1979 1983 1996 1978 1982 1987 1986
MIN 0.24 0.34 0.54 0.38 1.04 3.01 6.58 4.61 1.51 0.50 0.47 0.24
(WY) 1954 1957 1954 1954 1963 1956 1953 1953 1956 1956 1955 1952

SUMMARY STATISTICS FOR 2004 CALENDAR YEAR FOR 2005 WATER YEAR WATER YEARS 1952 - 2005
ANNUAL TOTAL 5434.1   3926.9    
ANNUAL MEAN 14.8   10.8     14.0  
HIGHEST ANNUAL MEAN 22.5   1993
LOWEST ANNUAL MEAN 2.96 1953
HIGHEST DAILY MEAN 167          Mar 5 183            Jan 13 753      Aug 14 1987
LOWEST DAILY MEAN 2.8       Dec 26,27 2.0         Aug 6,Sep 4,5 0.00 A
ANNUAL SEVEN-DAY MINIMUM 3.0       Dec 23 2.1         Aug 30 0.00 Oct 27 1956
MAXIMUM PEAK FLOW 300            Jan 12 1190      Aug 14 1987
MAXIMUM PEAK STAGE 4.84       Jan 12 10.10 Aug 14 1987
INSTANTANEOUS LOW FLOW 0.72       Sep 5
ANNUAL RUNOFF (CFSM) 1.29 0.936 1.22
ANNUAL RUNOFF (INCHES) 17.58 12.70   16.54
10 PERCENT EXCEEDS 34      22        29     
50 PERCENT EXCEEDS 6.5   6.4     6.2  
90 PERCENT EXCEEDS 3.9   2.9     2.0  

A - At times in several years.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data