Station list     Available data
ILLINOIS RIVER BASIN


414652088133800                         NAPERVILLE TOWNSHIP HIGHWAY DIVISION AT NAPERVILLE, IL



LOCATION.--Latitude 41°46'52", longitude 88°13'59", SE1/4NE1/4NE1/4 sec.17, 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, 2.73 in., August 4, 1998.

MAXIMUM FOR WATER YEAR 1997.--Maximum recorded, 1.22 in., August 12, 1997.

MAXIMUM FOR WATER YEAR 1998.--Maximum, 2.73 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 -- -- -- -- -- -- -- -- -- -- .76 .00
4 -- -- -- -- -- -- -- -- -- -- .01 .00
5 -- -- -- -- -- -- -- -- -- -- .00 .00
6 -- -- -- -- -- -- -- -- -- -- .00 .00
7 -- -- -- -- -- -- -- -- -- -- .00 .01
8 -- -- -- -- -- -- -- -- -- -- .00 .02
9 -- -- -- -- -- -- -- -- -- -- .02 .00
10 -- -- -- -- -- -- -- -- -- -- .01 .00
11 -- -- -- -- -- -- -- -- -- -- .65 .00
12 -- -- -- -- -- -- -- -- -- -- 1.22 .00
13 -- -- -- -- -- -- -- -- -- -- .00 .00
14 -- -- -- -- -- -- -- -- -- -- .00 .00
15 -- -- -- -- -- -- -- -- -- -- .25 .00
16 -- -- -- -- -- -- -- -- -- -- .79 .91
17 -- -- -- -- -- -- -- -- -- -- .93 .09
18 -- -- -- -- -- -- -- -- -- .55 .00 .00
19 -- -- -- -- -- -- -- -- -- .00 .01 .22
20 -- -- -- -- -- -- -- -- -- .00 .00 .00
21 -- -- -- -- -- -- -- -- -- .04 .00 .00
22 -- -- -- -- -- -- -- -- -- .01 .00 .07
23 -- -- -- -- -- -- -- -- -- .00 .15 .07
24 -- -- -- -- -- -- -- -- -- .00 .00 .00
25 -- -- -- -- -- -- -- -- -- .00 .00 .00
26 -- -- -- -- -- -- -- -- -- .00 .00 .00
27 -- -- -- -- -- -- -- -- -- .00 .00 .00
28 -- -- -- -- -- -- -- -- -- .00 .00 .00
29 -- -- -- -- -- -- -- -- -- .00 .00 .00
30 -- -- -- -- -- -- -- -- -- .00 .01 .00
31 -- -- -- -- -- -- -- -- -- .00 .00 --

TOTAL -- -- -- -- -- -- -- -- -- -- 4.81 1.39
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 s0.18 0.06 0.00 0.11 0.00 0.00 0.00 0.00 0.00
2 .00 .00 .00 .00 .00 s.02 .00 .03 .00 .00 .00 .00
3 .00 .07 .10 .39 .00 s.04 .00 .03 .21 2.18 .56 .14
4 .04 .00 .00 .23 .00 s.18 .00 .00 .00 .00 2.73 .00
5 .00 .13 .00 .28 .00 .00 .00 .22 .07 .00 .05 .00
6 .00 .12 .00 .28 .00 .02 .00 .25 .04 .00 .05 .22
7 .00 .00 .00 .04 .00 .01 .56 1.56 .00 .49 .89 2.15
8 .00 .00 .00 s.27 .00 .67 .33 .07 .06 .00 .00 .00
9 .16 .00 s.07 s.01 .00 s.21 .07 .00 1.24 .00 .00 .00
10 .00 s.02 s.24 .00 .05 .00 .00 .00 .01 .00 .00 .00
11 .00 .00 .00 .00 .69 .00 .00 .00 .90 .00 .00 .00
12 .00 .00 .01 .00 .00 .00 .00 .16 .00 .00 .00 .00
13 .53 .00 .00 .00 .00 .00 .06 .12 .00 .00 .00 .00
14 .00 s.02 .00 .00 .00 .00 .00 .00 .08 .00 .00 .46
15 .00 .00 .00 .00 .00 .00 .42 .00 .00 .00 .01 .07
16 .00 .00 .00 .00 .19 .00 .41 .00 .03 .00 .00 .00
17 .00 s.02 .00 .00 .06 .52 .00 .00 .00 .00 .00 .00
18 .00 s.13 .00 .00 .01 .23 .00 .00 .46 .00 .00 .00
19 .00 .00 .00 .00 .00 .01 .00 .00 .00 .37 .00 .00
20 .00 .00 .00 .00 .02 .00 .70 .00 .00 .03 .00 .02
21 .00 .00 .00 .00 .00 .00 .07 .00 .00 .05 .07 .00
22 .00 .00 .12 .00 .00 .00 .00 .00 .00 .12 .00 .00
23 .00 .00 .00 .00 .00 .03 .00 .02 .00 .00 .00 .00
24 .16 .00 s.18 .00 .10 .00 .00 .11 .00 .00 .50 .02
25 .01 .00 s.11 .00 .00 .00 .07 .00 .00 .00 .15 .00
26 .76 .00 .00 s.16 .01 .00 .58 .00 1.53 .00 .00 .00
27 s.15 .44 .00 s.08 .13 .00 .00 .00 .00 .00 .00 .00
28 .00 .02 s.01 s.13 .07 .17 .00 .03 .11 .00 .53 .00
29 .00 .13 .00 s.04 -- .00 .26 .04 .10 .00 .00 .17
30 .00 e.01 .00 .00 -- .03 .00 .00 .00 .00 .00 .52
31 .00 -- .00 .00 -- .61 -- .00 -- .00 .00 --

TOTAL 1.81 1.16 0.84 2.09 1.39 2.75 3.64 2.64 4.84 3.24 5.54 3.77
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data