Station list     Available data
ILLINOIS RIVER BASIN


415131088143600                         NATIONAL ACCELERATOR NEAR WEST CHICAGO, IL



LOCATION.--Latitude 41°51'31", longitude 88°14'36", in NW1/4SW1/4SW1/4 sec.17, T.39 N., R.9 E., Du Page County, on the east side of McChesney Road, just south of the Burlington Northern Railroad tracks near West Chicago.

PERIOD OF RECORD.--April 5, 1989 to October 23, 1995 and July 18, 1997 to current year.

GAGE.--A 12-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 recorded, 3.62 in., June 23, 1994 but may have been greater during periods of missing record.

MAXIMUM FOR WATER YEAR 1997.--Maximum recorded, 0.99 in., August 3, 1997.

MAXIMUM FOR WATER YEAR 1998.--Maximum, 3.01 in., July 3, 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 0.01
2 -- -- -- -- -- -- -- -- -- -- .00 .00
3 -- -- -- -- -- -- -- -- -- -- .99 .00
4 -- -- -- -- -- -- -- -- -- -- .10 .00
5 -- -- -- -- -- -- -- -- -- -- .00 .02
6 -- -- -- -- -- -- -- -- -- -- .00 .00
7 -- -- -- -- -- -- -- -- -- -- .00 .00
8 -- -- -- -- -- -- -- -- -- -- .00 .01
9 -- -- -- -- -- -- -- -- -- -- .03 .00
10 -- -- -- -- -- -- -- -- -- -- .03 .00
11 -- -- -- -- -- -- -- -- -- -- .75 .00
12 -- -- -- -- -- -- -- -- -- -- .58 .00
13 -- -- -- -- -- -- -- -- -- -- .00 .00
14 -- -- -- -- -- -- -- -- -- -- .00 .00
15 -- -- -- -- -- -- -- -- -- -- .35 .00
16 -- -- -- -- -- -- -- -- -- -- .67 .95
17 -- -- -- -- -- -- -- -- -- -- .83 .31
18 -- -- -- -- -- -- -- -- -- .31 .00 .00
19 -- -- -- -- -- -- -- -- -- .00 .02 .38
20 -- -- -- -- -- -- -- -- -- .02 .00 .00
21 -- -- -- -- -- -- -- -- -- .02 .00 .00
22 -- -- -- -- -- -- -- -- -- .03 .00 .06
23 -- -- -- -- -- -- -- -- -- .00 .13 .10
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 -- -- -- -- -- -- -- -- -- -- 4.49 1.84
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 e0.02 0.15 0.00 0.16 0.00 0.00 0.00 0.00 0.01
2 .00 .03 .00 .00 .00 s.02 .00 .14 .00 .00 .00 .00
3 .00 .13 .16 e.45 .01 s.04 .00 .05 .12 3.01 .13 .10
4 .16 .00 .00 e.34 .00 s.16 .00 .01 .00 .01 .76 .00
5 .00 .12 .00 e.39 .00 .00 .00 .25 e.07 .00 .43 .00
6 .00 .18 .00 .41 .00 .00 .00 .14 .00 .00 .12 .84
7 .00 .00 .00 .06 .00 .00 .63 2.10 .00 .31 .64 1.37
8 .00 .00 .00 s.22 .00 .79 .51 .07 .08 .01 .00 .00
9 .27 .01 e.12 s.01 .00 s.16 .05 .00 1.11 .00 .00 .00
10 .00 s.02 s.27 .00 .04 .00 .00 .00 .00 .00 .00 .00
11 .00 .00 s.03 .00 .75 .00 .00 .00 1.45 .00 .00 .00
12 .00 .00 .00 .00 .00 .00 .00 .06 .00 .00 .00 .00
13 .71 .00 .00 .00 .00 s.01 .31 .00 .00 .00 .00 .00
14 .00 s.01 s.01 .00 .00 .00 .00 .00 .08 .00 .01 .98
15 .00 s.01 .00 .00 .00 .00 .45 .01 .00 .00 .00 .05
16 .00 .00 .00 .00 e.28 .00 .55 .00 .03 .00 .00 .00
17 .00 s.06 .01 .00 .07 .51 .01 .00 .01 .00 .00 .00
18 .00 s.21 .00 .00 .00 .35 .00 .00 .44 .00 .00 .00
19 .00 .00 .00 .00 .00 .04 .00 .02 .01 e.40 .00 .00
20 .00 .00 .00 .00 .03 .00 .68 .00 .00 .00 .00 .05
21 .00 .00 .00 .00 .03 .00 .11 .00 .00 e.02 .03 .01
22 .00 .00 .10 .00 .00 .00 .00 .00 .00 e.12 .00 .00
23 .00 .00 .00 .00 .00 .03 .00 .31 .00 .00 .00 .00
24 .25 .00 s.18 .00 .13 .00 .00 .17 .00 .00 .29 .01
25 .02 .00 s.11 .00 .00 .00 .07 .00 .00 .00 .76 .02
26 1.07 .00 .00 s.08 .01 .00 .34 .00 1.16 .00 .00 .00
27 s.21 e.40 .00 s.18 .18 .01 .00 .00 .00 .00 .00 .00
28 .00 e.05 .00 s.08 .02 .23 .03 .15 .22 .00 .56 .00
29 .00 e.21 .00 s.05 -- .00 .01 .03 .09 .00 .01 .15
30 .00 e.01 .00 .00 -- .00 .00 .00 .01 .00 .00 .63
31 .00 -- .00 .00 -- 1.01 -- .00 -- .00 .00 --

TOTAL 2.69 1.50 0.99 2.29 1.70 3.36 3.91 3.51 4.88 3.88 3.74 4.22
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data