Station list     Available data
ILLINOIS RIVER BASIN


414747087582700                         WESTMONT WATER DEPARTMENT AT WESTMONT, IL



LOCATION.--Latitude 41°47'47", longitude 87°58'27", in SW1/4SW1/4NW1/4 sec. 10, T.38 N., R.11 E., Du Page County.

PERIOD OF RECORD.--July 1997 to current year.

GAGE.--A 6-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, 2.94 in., October 17, 1998.

MAXIMUM FOR CURRENT YEAR.--Maximum, 2.94 in., October 17, 1998.
RAINFALL, IN INCHES, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 0.00 0.00 0.00 0.00 0.03 0.00 0.00 0.00 1.20 0.47 0.00 0.00
2 .55 .00 .00 .00 .20 .16 .00 .00 .15 .00 .00 .00
3 .01 .00 .00 .00 .01 .01 .00 .00 .00 .00 .00 .00
4 .00 .07 .00 .00 .00 .00 .23 .03 .00 .00 .00 .00
5 .42 .00 .00 .00 .06 .00 .01 .03 .00 .00 .00 .00
6 .18 .00 1.04 .00 .00 .00 .04 .30 .14 .00 .00 .00
7 .01 .00 .00 .00 .00 s.07 .00 .01 .00 .00 .27 .00
8 .00 .07 .00 .00 .00 .00 1.27 .01 .01 .00 .01 .00
9 .00 .41 .00 .00 .00 s.01 .11 .00 .00 .08 .01 .00
10 .00 .73 .00 .00 .00 s.06 .11 .00 .02 .00 .00 .00
11 .00 .00 .00 .00 .31 .00 .01 1.46 .65 .00 .00 .00
12 .00 .00 .00 .00 .00 .00 .00 .24 .10 .00 .40 .18
13 .00 .00 .00 s.02 .00 .00 .00 .01 .85 .00 .09 .00
14 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00
15 .03 .00 .00 .00 .00 .00 .98 .00 .00 .00 .00 .00
16 .00 .00 .00 s.07 .05 .00 .35 .00 .00 .00 .02 .00
17 2.94 .00 .00 .31 .01 .00 .00 .74 .00 .49 .00 .00
18 .23 .00 .00 .00 .00 .00 .04 .06 .00 .01 .01 .00
19 .00 .00 .00 .00 .00 .00 .00 .00 .00 .08 .87 .04
20 .00 .00 s.02 .00 .00 .00 .07 .00 .00 .04 .00 .00
21 .00 .00 .00 .70 .00 .00 .03 1.27 .00 .52 .00 .01
22 .00 .00 .00 .35 .00 .00 1.13 .01 .38 .00 .00 .00
23 .00 .00 .00 .72 .00 .00 .28 .39 .29 .07 .34 .00
24 .00 .00 .00 .04 .00 .00 .00 .00 .01 .00 .65 .00
25 .00 .02 .00 .01 s.12 .00 .00 .00 .00 .00 .60 .00
26 .00 .00 .00 .00 .25 .00 .00 .00 .00 .00 .00 .00
27 .48 .00 .00 .00 .04 .00 1.09 .00 .13 .00 .00 .50
28 .02 .00 .00 .00 .05 .00 .02 .00 .13 .00 .00 1.61
29 .17 .00 s.04 .00 -- .00 .00 .00 .00 .00 .00 .14
30 .05 .42 .00 .00 -- .00 .00 .00 .00 .00 .00 .00
31 .00 -- .00 .00 -- .00 -- .30 -- .00 .00 --

TOTAL 5.09 1.72 1.10 2.22 1.13 0.31 5.77 4.86 4.06 1.76 3.27 2.48
s Snowfall-affected precipitation


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data