Station list     Available data
ILLINOIS RIVER BASIN


415457088150600       DU PAGE COUNTY AIRPORT NEAR ST CHARLES, IL



LOCATION.-- Latitude 41°54'57", longitude 88°15'06", in NW1/4SW1/4SE1/4 sec. 30, T.40N., R.9 E., Du Page County, Hydrologic Unit 07120004, on Tower Road 0.4 mi south of Keil Street, and located near the southeast corner of the first aeroplane hanger of the Du Page County Airport near St. Charles.

PERIOD OF RECORD.--
PRECIPITATION: February 1986 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.

EXTREMES FOR PERIOD OF RECORD.--
PRECIPITATION: Maximum, 4.26 in., August 14, 1987, but may have been greater during periods of missing record.

EXTREMES FOR CURRENT YEAR.--Maximum, 2.48 in., September 11, 2000.

PRECIPITATION, TOTAL, INCHES, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY SUM VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 0.00 0.00 0.00 0.00 0.00 e0.03 0.01 0.12 0.35 0.00 0.17 0.00
2 .03 .00 .00 .02 .00 .00 .02 .00 .00 1.39 .00 .00
3 .69 .00 .19 .12 s.01 .00 .00 .00 .00 .17 .00 .00
4 .00 .00 1.29 .00 .00 .00 .00 .01 .06 .00 .00 .00
5 .00 .00 .68 .00 .00 .00 .00 .00 .27 .00 .46 .00
6 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .99 .00
7 .00 .00 .00 .00 .00 .00 .06 .02 .00 .00 .00 .00
8 .00 .00 .01 .01 .00 .00 .22 .35 .00 .00 .00 .05
9 .00 .00 e.05 .18 .00 .00 .00 .81 .00 .00 .00 .00
10 .00 .00 .00 e.11 .00 .00 .03 .00 .00 .99 .00 .00
11 .00 .00 .00 .00 .00 .00 .00 .52 .83 .00 .00 2.48
12 .00 .00 .00 .00 .00 .00 .00 .00 .39 .00 .00 .02
13 .02 .00 .00 .00 .00 e.02 .00 .00 .40 .00 .01 .00
14 .00 .00 e.04 .00 s.02 .00 .00 .00 .18 .00 .00 .48
15 .00 .00 e.13 .00 .00 e.41 .00 .00 .00 .00 .00 .00
16 .08 .00 .00 .00 .00 .00 1.04 .22 .08 .00 .00 .00
17 .00 .00 .00 .00 .00 .00 .00 .03 .00 .00 .62 .00
18 .00 .00 s.06 .00 s.02 .01 .00 .60 .00 .03 .00 .00
19 .02 .03 s.01 .00 s.11 .13 .89 .00 .00 .00 .00 .00
20 .00 .00 .02 .00 s.01 .20 1.60 .00 .58 .00 .00 .52
21 .00 .00 .00 .00 s.07 .00 e.16 .00 .00 .00 .00 .01
22 .00 .01 .00 .00 .00 .00 .00 .06 .00 .00 .00 .61
23 .00 .34 .00 .00 .00 .00 .10 .00 .00 .00 .00 e.09
24 .00 .00 s.01 .00 .45 .04 .00 .00 1.25 .00 .00 e.17
25 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00
26 .00 .06 .00 .00 .00 .10 .00 .08 .01 .00 .01 .00
27 .00 .00 .00 .00 .00 .04 .00 .19 .00 .00 .00 .00
28 .00 .00 .00 s.03 .00 .00 .00 .22 .04 .00 .00 .00
29 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00
30 .10 .00 .00 s.12 -- .00 .00 .41 .15 .59 .00 .00
31 .01 -- .00 .00 -- .00 -- .64 -- 1.33 .00 --

TOTAL 0.95 0.45 2.49 0.59 0.69 0.98 4.13 4.28 4.59 4.55 2.26 4.43
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data