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", 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 1994-2000.


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

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

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. Effluent averaged about 4.7 ft3/s.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
111   2.91.42.93.214   6.029   41   2.024   1.6
210   3.21.43.03.210   5.624   43   24   9.41.8
341   3.14.43.43.27.35.421   15   129   4.92.1
428   2.69.38.03.26.55.422   11   30   3.52.1
511   2.4107   6.13.15.55.821   86   13   6.62.1
 
68.52.324   4.62.94.46.121   29   7.15.91.9
76.22.110   4.02.93.713   21   17   4.44.31.9
85.32.17.33.72.93.633   23   12   3.02.73.0
94.22.15.76.73.53.630   66   7.42.52.42.2
104.02.15.312   5.33.222   48   7.0131   2.22.0
 
113.92.03.89.56.62.818   66   39   76   2.483   
123.92.03.36.95.92.515   70   28   32   2.4108   
135.11.93.35.45.12.613   50   29   14   2.122   
144.11.84.44.95.02.411   36   24   15   e1.835   
153.51.77.34.64.82.510   31   15   17   e2.015   
 
165.11.76.24.24.83.99.439   e12   5.1e1.88.8
173.51.64.73.75.03.622   33   e9.04.4e16   7.0
183.41.64.33.55.02.918   108   e7.44.013   6.5
193.01.83.8e3.46.52.735   123   e19   4.55.26.0
202.92.0e3.7e3.37.919   217   57   20   2.7e2.214   
 
213.62.0e3.3e3.210   18   180   40   13   2.7e2.08.3
223.91.7e3.1e3.135   12   82   31   4.91.4e1.779   
233.49.23.03.160   7.859   23   3.01.0e1.6124   
242.83.92.93.2106   7.748   7.823   1.0e1.639   
252.82.52.63.461   8.457   5.725   1.9e1.517   
 
262.72.42.53.236   6.952   6.18.13.2e1.69.4
272.72.12.62.828   7.128   11   4.84.2e1.56.4
282.72.12.62.721   7.525   72   3.89.4e2.36.2
292.82.12.72.717   7.325   18   3.76.1e2.15.5
302.71.62.82.7---   6.923   11   2.44.12.04.6
 
313.0---   2.83.3---   6.2---   41   ---   81   1.8---   

TOTAL200.772.6251.5137.2464.0202.51079.71175.6562.5636.7134.5625.4
MEAN6.472.428.114.4316.06.5336.037.918.820.54.3420.8
MAX419.210712106192171238613124124
MIN2.71.61.42.72.92.45.45.72.41.01.51.6
CFSM.56.21.71.381.39.573.133.301.631.79.381.81
IN..65.23.81.441.50.663.493.801.822.06.442.02

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1952 - 2000, BY WATER YEAR (WY)
MEAN8.3311.112.09.9614.023.125.715.914.311.310.710.0
MAX23.140.451.240.043.286.657.367.341.659.257.550.0
(WY)198719861983197419971979198319961978198219871986
MIN.24.34.54.381.043.016.584.611.51.50.47.24
(WY)195419541954195419631956195319531956195619551952

SUMMARY STATISTICSFOR 1999 CALENDAR YEARFOR 2000 WATER YEARWATER YEARS 1952 - 2000
ANNUAL TOTAL6088.0  5542.9  
ANNUAL MEAN16.7  15.1  13.9  
HIGHEST ANNUAL MEAN22.5  1993
LOWEST ANNUAL MEAN2.961953
HIGHEST DAILY MEAN239         Apr 23217         Apr 20753     Aug 14 1987
LOWEST DAILY MEAN1.4      Dec 1, 21.0      Jul 23,24.00A
ANNUAL SEVEN-DAY MINIMUM1.7      Nov 131.6      Aug 21.00Oct 27 1956
INSTANTANEOUS PEAK FLOW361         Jul 21190     Aug 14 1987
INSTANTANEOUS PEAK STAGE5.56    Jul 210.10Aug 14 1987
INSTANTANEOUS LOW FLOW.84    Sep 1,2,6,7
ANNUAL RUNOFF (CFSM)1.451.321.21
ANNUAL RUNOFF (INCHES)19.6917.9316.40
10 PERCENT EXCEEDS36     39     29     
50 PERCENT EXCEEDS6.5  5.1  6.0  
90 PERCENT EXCEEDS2.7  2.0  1.8  
A - At times in several years.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data