Station list     Available data
ILLINOIS RIVER BASIN


415518087583000                         ADDISON WASTEWATER TREATMENT FACILITY AT ADDISON, IL



LOCATION.--Latitude 41°55'18", longitude 87°58'30", in SE1/4SW1/4SW1/4 sec. 27, T.40 N., R.11 E., Du Page County.

PERIOD OF RECORD.--July 1997 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, 2.91 in., October 17, 1998.

MAXIMUM FOR CURRENT YEAR.--Maximum, 2.91 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 s0.01 0.02 0.00 0.00 0.00 1.02 0.57 0.00 0.00
2 .50 .00 .00 .00 .13 .15 .00 .00 .07 .00 .00 .00
3 .00 .04 .00 .00 .01 .00 .00 .00 .00 .01 .00 .00
4 .00 .09 .00 .00 .00 .00 .16 .03 .00 .00 .00 .00
5 .70 .00 .00 .00 .04 .00 .06 .06 .00 .00 .00 .00
6 .16 .00 .99 .00 .00 .00 .03 .29 .15 .00 .00 .00
7 .00 .00 .00 .00 .00 s.03 .00 .03 .00 .00 .27 .00
8 .00 .07 .00 .00 .00 .00 1.25 .00 .01 .00 .00 .00
9 .00 .32 .00 .00 .00 .00 .19 .00 .00 .91 .04 .00
10 .00 1.09 .00 .00 .00 s.18 .04 .00 .02 .00 .00 .00
11 .00 .00 .00 .00 .49 s.03 .02 .97 1.98 .00 .00 .00
12 .00 .00 .00 .00 .00 .00 .00 .65 .43 .00 .32 .30
13 .00 .00 .00 .00 .00 .00 .00 .00 2.95 .00 .12 .01
14 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00
15 .05 .00 .00 .00 .00 .00 1.07 .00 .00 .00 .00 .00
16 .34 .00 .00 s.28 .06 .00 .44 .00 .00 .00 .00 .00
17 2.91 .00 .00 .46 .00 .00 .00 .81 .00 .18 .02 .00
18 .26 .00 .00 .01 .00 .00 .09 .07 .00 .00 .23 .00
19 .00 .00 .00 .00 .00 .00 .00 .00 .00 .07 .41 .02
20 .00 .00 s.01 .00 .00 .00 .20 .00 .00 .05 .00 .00
21 .00 .00 .00 .70 .00 .00 .13 .92 .00 .53 .00 .10
22 .00 .00 .00 .56 .00 .00 1.27 .03 .80 .00 .00 .00
23 .00 .00 .00 .79 .00 .00 .68 .21 .18 .41 e.39 .00
24 .00 .00 .00 .02 .00 .00 .00 .00 .00 .00 .21 .00
25 .00 .01 .00 .00 s.10 .00 .00 .00 .00 .00 .20 .00
26 .00 .00 .00 .00 .25 .00 .00 .00 .00 .05 .00 .00
27 .61 .00 .00 .00 .15 .00 1.04 .00 .25 .00 .00 .61
28 .01 .00 .00 .00 .08 .00 .01 .00 .04 .00 .00 1.80
29 .25 .00 s.02 .00 -- .00 .00 .00 .00 .00 .00 .11
30 .02 .55 .00 .00 -- .00 .00 .00 .00 .00 .00 .00
31 .00 -- .00 .00 -- .00 -- .04 -- .00 .00 --

TOTAL 5.81 2.17 1.02 2.83 1.33 0.39 6.68 4.11 7.90 2.78 2.21 2.95
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data