Station list     Available data
ILLINOIS RIVER BASIN


414655088102300                         NAPERVILLE NORTH OPERATIONS CENTER AT NAPERVILLE, IL



LOCATION.--Latitude 41°46'55", Longitude 88°10'23", in NE1/4NW1/4NE1/4 sec.14, T.38 N., R.09 E., Du Page County.

PERIOD OF RECORD.--July 18, 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, 2.71 in., August 4, 1998.

MAXIMUM FOR WATER YEAR 1997.--Maximum recorded, 1.43 in., August 12, 1997.

MAXIMUM FOR WATER YEAR 1998.--Maximum, 2.71 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 -- -- -- -- -- -- -- -- -- -- .96 .00
4 -- -- -- -- -- -- -- -- -- -- .53 .00
5 -- -- -- -- -- -- -- -- -- -- .00 .00
6 -- -- -- -- -- -- -- -- -- -- .00 .00
7 -- -- -- -- -- -- -- -- -- -- .00 .00
8 -- -- -- -- -- -- -- -- -- -- .00 .00
9 -- -- -- -- -- -- -- -- -- -- .02 .00
10 -- -- -- -- -- -- -- -- -- -- .00 .00
11 -- -- -- -- -- -- -- -- -- -- .66 .00
12 -- -- -- -- -- -- -- -- -- -- 1.43 .00
13 -- -- -- -- -- -- -- -- -- -- .00 .00
14 -- -- -- -- -- -- -- -- -- -- .00 .00
15 -- -- -- -- -- -- -- -- -- -- .27 .00
16 -- -- -- -- -- -- -- -- -- -- .70 .71
17 -- -- -- -- -- -- -- -- -- -- 1.22 .13
18 -- -- -- -- -- -- -- -- -- .59 .00 .00
19 -- -- -- -- -- -- -- -- -- .00 .00 .11
20 -- -- -- -- -- -- -- -- -- .00 .02 .00
21 -- -- -- -- -- -- -- -- -- .01 .00 .00
22 -- -- -- -- -- -- -- -- -- .01 .00 .07
23 -- -- -- -- -- -- -- -- -- .00 .24 .11
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 -- -- -- -- -- -- -- -- -- -- 6.06 1.13
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 0.04 e0.00 s0.06 0.09 0.00 0.08 0.00 0.00 0.00 0.00 0.00
2 .00 .00 .00 .00 .00 s.17 .00 .00 .00 .00 .00 .00
3 .00 .05 .13 .48 .00 s.02 .00 .01 .20 1.97 .66 e.16
4 .00 .00 .00 .31 .00 s.21 .00 .01 .00 .00 2.71 e.00
5 .00 .14 .00 .41 .00 .00 .00 .25 .06 .00 .08 e.00
6 .00 .14 .00 .27 .00 .00 .00 .48 .01 .01 .01 e.57
7 .00 .00 .00 .06 .00 .01 .53 1.58 .00 .54 .46 e2.38
8 .00 .00 .00 s.49 .00 .71 .46 .07 .08 .00 .00 e.00
9 .12 .00 s.10 s.12 .00 s.23 .02 .00 1.20 .00 .00 e.00
10 .00 s.02 s.37 .00 .06 .00 .00 .00 .00 .00 .00 e.00
11 .00 .00 .00 s.02 .71 .00 .00 .02 1.21 .00 .00 e.00
12 .00 .00 s.01 .00 .00 .00 .00 .09 .00 .00 .00 e.00
13 .60 .00 .00 .00 .00 s.04 .15 .14 .00 .00 .00 e.00
14 .00 s.02 .00 .00 .00 .00 .01 .00 .03 .00 .00 e.52
15 .00 .00 .00 s.01 .00 .00 .27 .00 .00 .00 .03 e.07
16 .00 .00 .00 s.01 e.24 .00 .35 .00 .01 .00 .00 e.00
17 .00 .00 .00 .00 .11 .55 .00 .00 .00 .00 .00 e.00
18 .00 s.16 .00 .00 .00 .39 .00 .00 .40 .00 .00 e.00
19 .00 .00 .00 .00 .00 .01 .00 .00 .01 .51 .00 e.00
20 .00 s.01 .00 .00 .02 .00 .62 .00 .00 .08 .00 e.01
21 .00 .00 .00 .00 .00 .00 .08 .00 .00 .02 .02 e.00
22 .00 .00 .13 .00 .00 .00 .00 .00 .00 .13 .16 e.00
23 .00 .00 .00 .00 .00 .01 .00 .09 .00 .00 .00 e.00
24 .10 .00 s.21 .00 .09 .00 .00 .26 .00 .00 .46 e.03
25 .01 .00 s.27 .00 .00 .00 .10 .00 .01 .00 .21 e.00
26 .86 .00 .00 s.21 .00 .00 .59 .00 1.49 .00 .00 e.00
27 s.23 e.46 .00 .00 .16 .00 .00 .00 .00 .00 .00 e.00
28 .00 e.04 s.03 .00 .03 .21 .04 .04 .10 .00 .45 e.00
29 .00 e.17 s.01 s.04 -- .00 .24 .06 .11 .00 .00 e.18
30 .00 e.01 .00 .00 -- .00 .00 .00 .00 .00 .00 e.48
31 .00 -- .00 .00 -- .85 -- .00 -- .00 .00 --

TOTAL 1.92 1.26 1.26 2.49 1.51 3.41 3.54 2.74 4.92 3.26 5.25 4.40
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data