Station list     Available data
ILLINOIS RIVER BASIN


05540130                         WEST BRANCH DU PAGE RIVER NEAR NAPERVILLE, IL



LOCATION.--Latitude 41°43'13", longitude 88°07'55", in SE1/4SW1/4NE1/4 sec. 6, T.37 N., R.10 E., Will County, on downstream side of Washington Street bridge, on center pier, 3.5 mi southeast of Naperville.

PERIOD OF RECORD.--May 26, 1989 to current year.

GAGE.--An 8-in.-diameter, unheated, tipping-bucket rain gage

REMARKS.--Snowfall-affected data can result during cold weather when snow fills the rain-gage funnel and then melts as temperatures rise. Snowfall-affected data are subject to appreciable errors.

MAXIMUM FOR PERIOD OF RECORD.--Maximum recorded, 5.34 in., August 4, 1998 but may have been greater during periods of missing record.

MAXIMUM FOR WATER YEAR 1998.--Maximum, 5.34 in., August 4, 1998.
RAINFALL, IN INCHES, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DAILY TOTAL VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 0.00 0.05 0.00 s0.17 0.09 0.00 0.22 0.00 0.00 0.00 0.00 0.00
2 .00 .01 .00 s.15 .00 s.06 .00 .00 .00 .00 .00 .00
3 .00 .21 .17 .43 .00 s.04 .00 .00 .28 1.64 2.40 .29
4 .09 .01 .00 .37 .00 s.13 .00 e.02 .00 .00 5.34 .00
5 .00 .18 .00 .54 .00 s.08 .00 e.31 .05 .00 1.11 .00
6 .00 .16 .00 .32 .00 .00 .00 .71 .04 .01 .65 .14
7 .00 .00 .00 .09 .00 .01 .80 1.51 .00 1.66 .16 1.74
8 .00 .00 .00 s.57 .00 .74 .34 .15 .08 .02 .00 .00
9 .04 .00 s.08 s.03 .00 s.30 .04 .00 .88 .00 .00 .00
10 .00 s.02 s.61 .00 .08 .00 .00 .00 .01 .00 .02 .00
11 .00 .00 .00 .00 .83 .00 .00 .00 1.19 .00 .00 .00
12 .00 .00 .00 .00 .00 .00 .00 .31 .01 .00 .00 .00
13 .71 .00 .00 .00 .00 s.03 .21 .06 .00 .00 .00 .00
14 .00 s.04 .00 .00 .00 .00 .00 .00 .03 .00 .01 .78
15 .00 .00 .00 .00 .00 .00 .21 .00 .00 .00 .01 .08
16 .00 .00 .00 .00 .23 .00 .04 .00 .08 .00 .00 .00
17 .00 s.07 .00 .00 .14 .89 .00 .00 .01 .00 .00 .00
18 .00 s.09 .00 .00 .02 .30 .00 .00 .47 .00 .00 .00
19 .00 .00 .00 .00 .00 .01 .00 .00 .01 .45 .00 .00
20 .00 s.02 .00 .00 .02 .00 .64 .00 .00 .01 .00 .02
21 .00 .00 .00 .00 .00 .00 .08 .00 .00 .02 .00 .00
22 .00 .00 .16 .00 .00 .00 .00 .00 .00 .20 .01 .00
23 .02 .00 .00 .00 .00 .00 .00 .06 .00 .00 .00 .00
24 .19 .00 s.21 .00 .21 .00 .01 .37 .00 .00 .49 .05
25 .01 .00 s.26 .00 .00 .00 .14 .00 .00 .00 .01 .03
26 1.31 .00 s.01 s.05 .00 .00 .43 .00 e2.14 .00 .00 .00
27 s.21 .69 .00 s.08 .18 .00 .00 .00 .00 .00 .00 .00
28 .00 .05 .00 s.42 .01 .22 .18 .08 .13 .00 .53 .00
29 s.01 .17 .00 s.06 -- .01 .42 .08 .10 .00 .00 .17
30 .00 .01 .00 .00 -- .00 .01 .00 .01 .00 .00 .52
31 .00 -- .00 .00 -- .93 -- .00 -- .00 .00 --

TOTAL 2.59 1.78 1.50 3.28 1.81 3.75 3.77 3.66 5.52 4.01 10.74 3.82
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data