Station list     Available data
ILLINOIS RIVER BASIN


414613088091000                         NAPERVILLE MUNICIPAL BUILDING AT NAPERVILLE, IL



LOCATION.--Latitude 41°46'13", longitude 88°09'10", in SE1/4SW1/4SE1/4 sec.13, T. 38 N., R.09 E., Du Page County.

PERIOD OF RECORD.--July 18, 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, 3.91 in., August 4, 1998.

MAXIMUM FOR WATER YEAR 1997.--Maximum recorded, 1.2 in., August 12, 1997.

MAXIMUM FOR WATER YEAR 1998.--Maximum, 3.91 in., August 4, 1998.
RAINFALL, IN INCHES, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAILY TOTAL VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 -- -- -- -- -- -- -- -- -- -- 0.00 0.00
2 -- -- -- -- -- -- -- -- -- -- .00 .00
3 -- -- -- -- -- -- -- -- -- -- .92 .00
4 -- -- -- -- -- -- -- -- -- -- .46 .00
5 -- -- -- -- -- -- -- -- -- -- .00 .00
6 -- -- -- -- -- -- -- -- -- -- .00 .00
7 -- -- -- -- -- -- -- -- -- -- .00 .00
8 -- -- -- -- -- -- -- -- -- -- .00 .01
9 -- -- -- -- -- -- -- -- -- -- .04 .00
10 -- -- -- -- -- -- -- -- -- -- .00 .00
11 -- -- -- -- -- -- -- -- -- -- .72 .00
12 -- -- -- -- -- -- -- -- -- -- 1.20 .00
13 -- -- -- -- -- -- -- -- -- -- .00 .00
14 -- -- -- -- -- -- -- -- -- -- .00 .00
15 -- -- -- -- -- -- -- -- -- -- .30 .00
16 -- -- -- -- -- -- -- -- -- -- .86 .79
17 -- -- -- -- -- -- -- -- -- -- 1.03 .16
18 -- -- -- -- -- -- -- -- -- e.53 .00 .00
19 -- -- -- -- -- -- -- -- -- .00 .00 .11
20 -- -- -- -- -- -- -- -- -- .00 .00 .00
21 -- -- -- -- -- -- -- -- -- .01 .00 .00
22 -- -- -- -- -- -- -- -- -- .02 .00 .07
23 -- -- -- -- -- -- -- -- -- .00 .25 .12
24 -- -- -- -- -- -- -- -- -- .00 .00 .00
25 -- -- -- -- -- -- -- -- -- .00 .00 .00
26 -- -- -- -- -- -- -- -- -- .02 .00 .00
27 -- -- -- -- -- -- -- -- -- .00 .00 .00
28 -- -- -- -- -- -- -- -- -- .00 .00 .00
29 -- -- -- -- -- -- -- -- -- .00 .00 .00
30 -- -- -- -- -- -- -- -- -- .00 .04 .00
31 -- -- -- -- -- -- -- -- -- .00 .00 --

TOTAL -- -- -- -- -- -- -- -- -- -- 5.82 1.26
e Estimated
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 e0.00 s0.21 0.10 0.00 0.15 0.00 0.00 0.00 0.00 0.00
2 .00 .00 .00 .00 .00 s.09 .00 .01 .00 .00 .00 .00
3 .00 .10 .14 .46 .00 s.05 .00 .00 .25 1.81 .76 .17
4 .00 .00 .01 .33 .00 s.17 .00 .01 .00 .01 3.91 .00
5 .01 .14 .00 .46 .00 .00 .00 .22 .07 .00 .25 .00
6 .00 .14 .00 .29 .00 .01 .00 .95 .02 .00 .04 .61
7 .00 .00 .00 .08 .00 .01 .69 1.57 .00 .93 .20 2.44
8 .00 .00 .00 s.57 .00 .81 .42 .10 .10 .00 .00 .00
9 .10 .00 s.07 s.01 .00 s.30 .03 .00 1.29 .00 .00 .00
10 .00 s.02 s.47 .00 .06 .00 .00 .00 .00 .00 .00 .00
11 .00 .00 .00 .00 .75 .00 .00 .00 1.43 .00 .00 .00
12 .00 .00 .00 .00 .00 .00 .00 .15 .00 .00 .00 .00
13 .69 .00 .00 .00 .00 .00 .24 .17 .00 .00 .00 .00
14 .00 s.02 .00 .00 .00 .00 .00 .00 .06 .00 .01 .52
15 .00 s.03 .00 .00 .00 .00 .19 .00 .00 .00 .04 .01
16 .00 .00 .00 .00 e.22 .00 .14 .00 .02 .00 .00 .00
17 .00 s.01 .00 .00 .08 .72 .00 .00 .00 .00 .00 .00
18 .00 s.21 .00 .00 .01 .35 .00 .00 .44 .00 .00 .00
19 .00 .00 .00 .00 .00 .01 .00 .00 .00 .56 .00 .00
20 .00 s.01 .00 .00 .03 .01 .74 .00 .00 .07 .00 .01
21 .00 .00 .00 .00 .00 .00 .15 .00 .00 .04 .01 .00
22 .00 .00 .17 .00 .00 .00 .00 .00 .00 .15 .02 .00
23 .00 .00 .00 .00 .00 .01 .00 .20 .00 .00 .00 .00
24 .13 .00 s.36 .00 .13 .00 .00 .26 .00 .00 .53 .03
25 .01 .00 s.19 .00 .00 .00 .11 .00 .00 .00 .13 .01
26 .96 .00 .00 s.35 .00 .00 .57 .00 2.04 .00 .00 .00
27 s.19 e.57 .00 s.07 .16 .01 .00 .00 .00 .00 .00 .00
28 .00 e.03 s.04 s.08 .02 .23 .04 .06 .14 .00 .46 .00
29 .00 e.15 .00 s.04 -- .00 .26 .07 .13 .00 .01 .18
30 .00 e.01 .00 .00 -- .00 .00 .01 .00 .00 .00 .48
31 .00 -- .00 .00 -- .83 -- .00 -- .00 .00 --

TOTAL 2.09 1.49 1.45 2.95 1.56 3.61 3.73 3.78 5.99 3.57 6.37 4.46
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data