Station list     Available data
ILLINOIS RIVER BASIN


05540275                         SPRING BROOK AT 87TH STREET NEAR NAPERVILLE, IL



LOCATION.--Lat 41°43'33", long 88°09'46", in SW1/4SW1/4 sec.36, T.38 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on right bank at upstream side of bridge on 87th Street, 3.0 mi south of Naperville, and at mile 2.9.

DRAINAGE AREA.--9.90 mi2.

PERIOD OF RECORD.--October 1987 to current year.

GAGE.--Water-stage recorder. Datum of gage is 647.00 ft above sea level.

REMARKS.--Records good except those for estimated daily discharges, which are poor. Gage-height telemeter at station.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 .42 .85 14    e5.6 12    5.4 33  21    2.3 9.9 2.1 4.0
2 .37 .97 11    4.8 29    5.0 34  17    1.9 8.6 1.8 3.6
3 .32 1.3   12    12    23    4.7 27  9.7 2.0 11    6.3 4.0
4 .33 1.3   8.5 33    19    5.4 22  8.0 2.5 51    230    3.9
5 .28 1.1   2.2 37    16    5.4 19  9.3 2.3 35    230    3.1
 
6 .25 3.0   2.0 39    13    5.1 16  22    2.1 25    102    2.7
7 .22 8.3   1.6 39    11    4.7 13  91    1.8 73    54    56   
8 .20 11      2.8 39    9.6 19    38  117    1.6 55    45    46   
9 .28 9.5   3.2 42    8.9 41    41  57    6.3 34    33    23   
10 .27 8.9   3.8 34    8.5 33    34  37    10    21    25    13   
 
11 .19 9.0   4.7 29    25    27    28  30    27    13    19    11   
12 .21 8.3   4.2 20    32    19    23  25    40    11    16    9.2
13 .62 7.9   7.8 e13    23    16    19  29    27    9.4 9.8 8.2
14 1.3   8.2   7.5 e14    20    14    15  20    17    7.8 6.8 7.4
15 2.1   8.7   9.0 e12    14    12    12  16    14    6.4 5.6 11   
 
16 1.8   9.7   3.6 e10    12    11    17  11    10    5.9 4.8 5.8
17 1.7   7.6   3.8 9.5 13    24    19  8.6 6.7 4.4 4.0 3.9
18 1.3   7.0   2.6 e9.0 13    80    12  7.3 5.7 3.7 3.9 3.2
19 1.0   7.6   2.5 7.2 11    57    10  6.0 6.6 5.9 3.1 2.5
20 .94 7.9   2.2 e6.4 8.6 40    13  5.1 5.4 6.8 3.2 2.1
 
21 .67 7.8   2.2 6.0 7.3 33    34  4.2 4.6 6.0 2.8 2.1
22 .49 7.2   2.3 5.8 6.7 27    30  3.8 3.8 5.6 2.7 1.8
23 .47 6.4   2.4 5.6 6.1 23    24  3.1 3.3 5.2 2.5 1.5
24 .50 5.4   3.4 5.3 7.4 20    19  3.6 2.4 4.4 3.4 1.4
25 .46 5.2   6.5 5.0 6.5 17    12  3.6 2.1 4.0 5.5 1.4
 
26 .94 5.2   6.9 5.0 5.9 15    13  2.9 68    3.5 4.5 1.5
27 8.4   6.5   9.1 5.3 7.3 9.9 20  2.2 56    3.3 3.6 1.4
28 3.6   22      13    4.7 6.4 9.4 15  2.3 33    3.1 6.7 1.5
29 1.7   19      6.6 5.6 ---    8.8 21  2.7 20    2.7 7.1 1.8
30 1.1   19      e6.4 6.7 ---    7.8 24  2.9 13    2.3 5.7 3.4
 
31 .85 ---      e6.0 7.4 ---    17    ---  2.4 ---    2.1 4.6 ---   

TOTAL 33.28 231.82 173.8 477.9 375.2 616.6 657 580.7 398.4 440.0 854.5 241.4
MEAN 1.07 7.73 5.61 15.4 13.4 19.9 21.9 18.7 13.3 14.2 27.6 8.05
MAX 8.4 22 14 42 32 80 41 117 68 73 230 56
MIN .19 .85 1.6 4.7 5.9 4.7 10 2.2 1.6 2.1 1.8 1.4
CFSM .11 .78 .57 1.56 1.35 2.01 2.21 1.89 1.34 1.43 2.78 .81
IN. .13 .87 .65 1.80 1.41 2.32 2.47 2.18 1.50 1.65 3.21 .91

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1988 - 1998, BY WATER YEAR (WY)
MEAN 3.64 11.0 9.30 11.5 12.0 14.0 16.0 14.6 11.5 12.4 6.37 5.09
MAX 10.9 20.1 22.6 30.7 44.3 26.1 34.0 46.3 31.3 78.1 27.6 13.6
(WY) 1992 1993 1988 1993 1997 1990 1993 1990 1993 1996 1998 1989
MIN .70 1.25 .69 4.40 3.22 4.07 4.03 1.57 .78 .39 .22 .36
(WY) 1993 1990 1990 1994 1996 1996 1989 1989 1988 1988 1991 1988

SUMMARY STATISTICS FOR 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1988 - 1998
ANNUAL TOTAL 3589.20 5080.60
ANNUAL MEAN 9.83 13.9   10.6  
HIGHEST ANNUAL MEAN 15.7   1993
LOWEST ANNUAL MEAN 6.40 1994
HIGHEST DAILY MEAN 346          Feb 21 230          Aug 4,5 1370      Jul 18 1996
LOWEST DAILY MEAN .19     Oct 11 .19     Oct 11 .00 Oct 11 1988
ANNUAL SEVEN-DAY MINIMUM .23     Oct 6 .23     Oct 6 .05 Oct 9 1988
INSTANTANEOUS PEAK FLOW 391          Aug 4 1750      Jul 18 1996
INSTANTANEOUS PEAK STAGE 7.15     Aug 4 10.77 Jul 18 1996
INSTANTANEOUS LOW FLOW .03     Dec 5 A
ANNUAL RUNOFF (CFSM) .99 1.41 1.07
ANNUAL RUNOFF (INCHES) 13.49 19.09 14.53
10 PERCENT EXCEEDS 17      33      26     
50 PERCENT EXCEEDS 6.0   7.3   5.1  
90 PERCENT EXCEEDS .88 1.6   .72
A - Result of freezeup.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data