Station list     Available data
ILLINOIS RIVER BASIN


05540091       SPRING BROOK AT FOREST PRESERVE NEAR WARRENVILLE, IL



LOCATION.-- Lat 41°50'07", long 88°10'56", in SW1/4SW1/4 sec.26, T.39 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on right bank on upstream side of footbridge in Roy C. Blackwell Forest Preserve, 0.7 mi upstream from the confluence with the West Branch Du Page River and 1 mi northwest of Warrenville.

DRAINAGE AREA.-- 6.83 mi2.

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

DISCHARGE: October 1991 to current year.
 

STAGE: Water years 1994-2000.

GAGE.-- Water-stage recorder and crest-stage gage. Datum of gage is 690.15 ft above sea level.

REMARKS.-- Effluent from sewage-treatment plant 3 mi upstream.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 11    e8.8 7.4 7.3 8.9 11    9.8 16    23    13    19    6.3
2 9.3 e8.0 7.6 7.6 8.8 9.0 10    15    22    8.8 15    4.2
3 13    7.6 15    8.8 8.8 8.5 10    13    14    74    10    5.2
4 22    7.7 11    16    8.8 8.2 10    11    12    27    8.3 6.8
5 13    7.4 42    13    8.8 8.0 10    11    16    22    11    6.4
 
6 10    6.9 20    12    8.8 7.8 10    11    13    18    18    6.3
7 9.3 7.1 14    12    8.8 7.5 12    11    11    15    24    5.9
8 9.2 6.9 10    11    8.4 8.1 16    10    9.3 14    13    5.0
9 8.8 7.6 9.0 13    8.5 7.6 12    44    8.0 14    9.9 5.7
10 8.7 7.4 9.0 15    9.8 7.2 10    29    8.4 30    7.6 6.8
 
11 12    7.1 8.6 14    11    7.8 10    26    20    22    8.0 19   
12 11    7.5 9.3 12    9.3 8.9 9.7 26    57    18    6.6 75   
13 9.9 7.2 8.1 12    8.6 9.5 8.9 26    47    14    6.4 21   
14 9.3 7.4 7.9 11    8.2 9.2 7.9 19    41    11    6.4 23   
15 9.1 7.3 8.5 11    7.2 10    8.4 16    33    9.6 7.5 19   
 
16 9.6 7.4 9.0 12    7.0 16    12    17    24    9.2 7.0 12   
17 9.5 7.3 8.2 11    7.0 12    40    16    19    7.1 13    11   
18 9.0 7.3 7.8 11    7.6 10    22    15    17    6.4 12    10   
19 7.8 7.3 7.7 11    7.5 11    38    19    15    7.6 8.1 8.9
20 7.6 7.2 8.1 10    7.7 15    162    15    19    6.1 7.0 11   
 
21 6.6 7.5 7.8 9.7 8.5 14    100    12    20    7.7 5.9 15   
22 8.3 7.9 7.5 9.5 18    12    49    13    14    6.4 6.6 16   
23 8.0 8.4 7.4 9.6 22    11    37    12    11    7.1 7.2 26   
24 8.1 8.3 7.5 9.9 26    11    30    10    30    6.9 7.0 19   
25 8.1 3.8 6.8 9.4 21    11    25    9.2 51    6.0 5.6 17   
 
26 8.0 4.4 6.6 9.1 16    10    22    8.4 22    6.1 6.4 13   
27 7.6 6.7 6.9 8.8 13    12    21    12    18    5.5 6.8 11   
28 7.5 7.3 6.3 8.5 12    11    19    15    15    7.1 6.0 9.9
29 e7.0 7.9 7.8 8.7 11    10    19    14    17    7.0 5.7 9.4
30 e7.3 7.9 7.2 9.0 ---    9.6 17    12    15    14    6.0 9.2
 
31 e8.0 ---    7.6 9.2 ---    9.6 ---    18    ---    23    5.4 ---   

TOTAL 293.6 218.5 307.6 332.1 317.0 313.5 767.7 501.6 641.7 443.6 286.4 414.0
MEAN 9.47 7.28 9.92 10.7 10.9 10.1 25.6 16.2 21.4 14.3 9.24 13.8
MAX 22 8.8 42 16 26 16 162 44 57 74 24 75
MIN 6.6 3.8 6.3 7.3 7.0 7.2 7.9 8.4 8.0 5.5 5.4 4.2
CFSM 1.39 1.07 1.45 1.57 1.60 1.48 3.75 2.37 3.13 2.10 1.35 2.02
IN. 1.60 1.19 1.68 1.81 1.73 1.71 4.18 2.73 3.50 2.42 1.56 2.25

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1992 - 2000, BY WATER YEAR (WY)
MEAN 11.6 14.1 12.4 16.8 15.6 17.8 23.2 17.7 18.4 12.6 12.1 10.7
MAX 24.8 20.9 17.9 29.5 35.4 28.5 34.4 26.7 30.2 29.6 17.4 16.1
(WY) 1999 1995 1993 1993 1997 1998 1993 1996 1993 1996 1997 1998
MIN 7.35 6.49 7.72 8.92 7.37 10.1 8.35 6.98 7.41 8.44 7.33 6.60
(WY) 1995 1994 1994 1994 1996 2000 1994 1994 1992 1995 1999 1995

SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1992 - 2000
ANNUAL TOTAL 5781.7   4837.3  
ANNUAL MEAN 15.8   13.2   15.2  
HIGHEST ANNUAL MEAN 18.8   1993
LOWEST ANNUAL MEAN 11.3   1994
HIGHEST DAILY MEAN 128          Apr 23 162          Apr 20 309      Jul 18 1996
LOWEST DAILY MEAN 3.8       Nov 25 3.8       Nov 25 3.8   Nov 25 1999
ANNUAL SEVEN-DAY MINIMUM 5.5       Sep 2 5.5       Aug 28 4.6   Nov 5 1993
INSTANTANEOUS PEAK FLOW 282          Apr 20 393      Jul 18 1996
INSTANTANEOUS PEAK STAGE 11.09     Apr 20 12.60 Jul 18 1996
INSTANTANEOUS LOW FLOW .00     Nov 25 .00 Nov 25 1999
ANNUAL RUNOFF (CFSM) 2.32 1.94 2.23
ANNUAL RUNOFF (INCHES) 31.49 26.35 30.31
10 PERCENT EXCEEDS 31      22      27     
50 PERCENT EXCEEDS 9.8   9.7   11     
90 PERCENT EXCEEDS 6.6   6.9   6.4  


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data