Station list     Available data
ILLINOIS RIVER BASIN


414411087575000                         MARIENBROOK WASTEWATER TREATMENT FACILITY AT DARIEN, IL



LOCATION.--Latitude 41°44'11", longitude 87°57'50", in NE1/4NE1/4SW1/4 sec. 34, T.38 N., R.11 E., Du Page County.

PERIOD OF RECORD.--October 1990 to October 1991 and July 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, 3.16 in., November 27, 1990, but may have been greater during periods of missing record.

MAXIMUM FOR CURRENT YEAR.--Maximum, 2.49 in., estimated, 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 0.00 e0.04 0.00 0.00 0.00 1.15 0.50 0.00 0.00
2 .49 .00 .00 .00 e.23 .13 .00 .00 .03 .00 .00 .00
3 .04 .00 .00 .00 e.04 .00 .00 .00 .00 .00 .00 .00
4 .00 .08 .00 .00 .00 .00 .24 .02 .00 .00 .00 .00
5 .07 .00 .00 .00 e.04 s.02 .06 .02 .00 .00 .00 .00
6 e.19 .00 1.07 .00 .00 s.01 .02 .27 .14 .00 .00 .00
7 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .16 .00
8 .00 .06 .00 .00 .00 .00 1.30 .00 .02 .00 .00 .00
9 .00 .44 .00 .00 .00 s.02 .21 .00 .00 .05 .01 .00
10 .00 .49 .00 .00 .00 s.22 .33 .00 .04 .00 .00 .00
11 .00 .00 .00 .00 e.25 .00 .00 .96 .45 .00 .00 .00
12 .00 .00 .00 .00 .00 .00 .00 .58 .09 .00 .41 .25
13 .00 .00 .00 .00 .00 .00 .00 .01 .68 .00 .07 .01
14 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00
15 e.03 .00 .00 .00 .00 .00 1.07 .00 .00 .00 .00 .00
16 .00 .00 .00 e.18 .09 .00 .33 .00 .00 .00 .00 .00
17 e2.49 .00 .00 e.61 .00 .00 .00 .98 .00 .83 .00 .00
18 e.27 .00 .00 .00 .00 .00 .06 .04 .00 .01 .03 .00
19 .00 .00 .00 .00 .00 .00 .00 .00 .00 .29 .23 .13
20 .00 .00 .00 .00 .00 .00 .07 .00 .00 .01 .00 .00
21 .00 .00 .00 e.87 .00 .00 .01 1.51 .00 .26 .00 .00
22 .00 .00 .00 e.29 .00 .00 1.32 .01 .07 .00 .00 .00
23 .00 .00 .00 .64 .00 s.01 .19 .31 .40 .09 .22 .00
24 .00 .00 .00 .01 .00 .00 .00 .00 .03 .01 .28 .00
25 .00 .01 .00 .01 s.10 .00 .00 .00 .00 .00 .16 .00
26 .00 .00 .00 .00 .18 .00 .00 .00 .00 .00 .00 .00
27 .36 .00 .00 .00 .04 .00 1.43 .00 .00 .00 .00 .49
28 .01 .00 .00 .00 .05 .00 .01 .00 .25 .00 .00 1.73
29 .26 .00 .00 .00 -- .00 .00 .00 .00 .00 .00 .15
30 .02 .26 .00 .00 -- .00 .00 .00 .00 .00 .00 .00
31 .00 -- .00 .00 -- .00 -- .20 -- .00 .00 --

TOTAL 4.23 1.34 1.07 2.61 1.06 0.41 6.65 4.91 3.35 2.05 1.57 2.76
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data