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°50'04" (NAD of 1927), 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 1994-2002.
 

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

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 good except those for March 26 to June 14, which are fair, and those for estimated daily discharges, which are poor. Effluent from sewage-treatment plant averaged about 3.5 ft3/s.
DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 24    18    17    e3.7 19    9.2 12    34  11    4.6 2.9 3.0
2 9.8 14    12    e3.7 13    14    15    76  8.1 5.0 2.7 65   
3 8.8 7.4 9.6 e3.8 10    17    11    28  32    4.9 2.5 30   
4 17    6.9 8.2 e3.9 8.9 e21    10    16  209    3.9 6.9 20   
5 23    15    7.4 4.0 8.2 e14    9.2 14  88    4.0 7.4 12   
 
6 9.5 12    8.3 4.2 6.8 e13    8.2 13  36    6.4 3.3 6.9
7 6.8 11    6.9 4.4 8.3 17    16    12  24    4.6 2.7 5.7
8 6.7 11    6.2 4.3 11    88    60    12  25    4.9 2.6 5.0
9 16    11    5.4 4.3 16    107    103    17  24    20    2.7 5.2
10 9.5 11    5.4 4.4 32    e45    39    16  16    6.2 2.7 5.2
 
11 9.7 9.7 5.0 4.3 23    25    26    42  18    4.8 2.7 5.1
12 55    6.7 6.4 4.3 17    22    21    138  23    4.2 3.0 4.7
13 275    6.6 32    4.2 14    20    17    48  22    3.7 73    4.5
14 167    6.7 15    4.8 12    17    15    31  19    3.4 24    4.3
15 84    5.2 11    4.8 12    12    14    29  13    3.5 8.3 4.4
 
16 53    4.8 13    5.1 12    9.6 12    75  9.3 4.0 5.7 4.5
17 61    4.3 13    5.7 10    8.6 15    64  8.7 4.0 4.0 4.6
18 75    4.4 11    4.8 9.2 8.3 13    37  6.0 4.2 3.1 11   
19 75    6.8 15    4.6 23    7.5 12    36  4.3 5.2 7.9 47   
20 45    4.8 12    4.1 55    8.4 12    26  4.9 3.1 4.2 30   
 
21 41    4.6 9.7 4.6 36    7.9 13    23  4.4 3.1 25    14   
22 51    4.3 10    4.3 23    7.2 18    18  4.3 5.6 306    38   
23 205    4.2 12    5.0 17    6.4 15    16  3.7 3.2 44    13   
24 145    11    8.6 5.8 14    6.1 14    15  3.3 e12    19    8.4
25 104    14    6.9 5.3 13    5.8 14    15  3.6 3.4 11    6.8
 
26 84    7.7 6.2 4.8 13    6.1 13    15  5.2 7.9 18    6.4
27 45    6.4 e5.4 4.8 12    6.0 13    14  4.4 5.9 20    6.0
28 40    5.8 e4.5 6.4 11    5.4 26    14  4.4 3.0 15    5.3
29 44    10    e4.2 6.9 ---    29    25    14  3.9 6.5 14    31   
30 34    32    e3.9 5.1 ---    18    21    14  4.1 4.6 15    11   
 
31 18    ---    e3.8 10    ---    12    ---    13  ---    3.4 6.3 ---   

TOTAL 1841.8 277.3 295.0 150.4 459.4 593.5 612.4 935 642.6 163.2 665.6 418.0
MEAN 59.41 9.243 9.516 4.852 16.41 19.15 20.41 30.16 21.42 5.265 21.47 13.93
MAX 275 32 32 10 55 107 103 138 209 20 306 65
MIN 6.7 4.2 3.8 3.7 6.8 5.4 8.2 12 3.3 3.0 2.5 3.0
CFSM 5.17 0.80 0.83 0.42 1.43 1.66 1.78 2.62 1.86 0.46 1.87 1.21
IN. 5.96 0.90 0.95 0.49 1.49 1.92 1.98 3.02 2.08 0.53 2.15 1.35
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1952 - 2002, BY WATER YEAR (WY)
MEAN 9.301 11.08 11.86 9.973 14.52 22.97 25.38 16.33 14.57 11.14 11.11 10.51
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 2001 CALENDAR YEAR FOR 2002 WATER YEAR WATER YEARS 1952 - 2002
ANNUAL TOTAL 8133.6       7054.2  
ANNUAL MEAN 22.28     19.33 14.06
HIGHEST ANNUAL MEAN 22.5   1993
LOWEST ANNUAL MEAN 2.96 1953
HIGHEST DAILY MEAN 337      A     Sep 19 306          Aug 22 753      Aug 14 1987
LOWEST DAILY MEAN 2.7           Jul 15 2.5       Aug 3 0.00 B
ANNUAL SEVEN-DAY MINIMUM 3.3           Jul 10 2.8       Aug 6 0.00 Oct 27 1956
MAXIMUM PEAK FLOW 848          Oct 13 1190      Aug 14 1987
MAXIMUM PEAK STAGE 8.77     Oct 13 10.10 Aug 14 1987
INSTANTANEOUS LOW FLOW 1.2       Aug 3
ANNUAL RUNOFF (CFSM) 1.94     1.68 1.22
ANNUAL RUNOFF (INCHES) 26.31     22.82 16.61
10 PERCENT EXCEEDS 45          40      30     
50 PERCENT EXCEEDS 11          10      6.1  
90 PERCENT EXCEEDS 4.6       4.0   1.9  

A - Estimated.

B - At times in several years.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data