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 1, 1990 to October 2, 1991 and 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 recorded, 3.16 in., November 27, 1990 but may have been greater during periods of missing record.

MAXIMUM FOR WATER YEAR 1997.--Maximum recorded, 1.82 in., August 3, 1997.

MAXIMUM FOR WATER YEAR 1998.--Maximum, 4.25 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 -- -- -- -- -- -- -- -- -- -- 1.82 .00
4 -- -- -- -- -- -- -- -- -- -- .10 .00
5 -- -- -- -- -- -- -- -- -- -- .00 .00
6 -- -- -- -- -- -- -- -- -- -- .00 .00
7 -- -- -- -- -- -- -- -- -- -- .00 .00
8 -- -- -- -- -- -- -- -- -- -- .00 .01
9 -- -- -- -- -- -- -- -- -- -- .00 .00
10 -- -- -- -- -- -- -- -- -- -- .00 .00
11 -- -- -- -- -- -- -- -- -- -- .78 .00
12 -- -- -- -- -- -- -- -- -- -- .64 .00
13 -- -- -- -- -- -- -- -- -- -- .00 .00
14 -- -- -- -- -- -- -- -- -- -- .00 .00
15 -- -- -- -- -- -- -- -- -- -- .27 .00
16 -- -- -- -- -- -- -- -- -- -- e1.67 .87
17 -- -- -- -- -- -- -- -- -- -- e.85 .14
18 -- -- -- -- -- -- -- -- -- 1.54 .00 .00
19 -- -- -- -- -- -- -- -- -- .00 .00 .06
20 -- -- -- -- -- -- -- -- -- .00 .00 .00
21 -- -- -- -- -- -- -- -- -- .23 .00 .00
22 -- -- -- -- -- -- -- -- -- .11 .00 .07
23 -- -- -- -- -- -- -- -- -- .00 .00 .09
24 -- -- -- -- -- -- -- -- -- .00 .30 .00
25 -- -- -- -- -- -- -- -- -- .00 .00 .00
26 -- -- -- -- -- -- -- -- -- .19 .00 .00
27 -- -- -- -- -- -- -- -- -- .00 .00 .00
28 -- -- -- -- -- -- -- -- -- .00 .00 .00
29 -- -- -- -- -- -- -- -- -- .00 .00 .00
30 -- -- -- -- -- -- -- -- -- .00 .00 .00
31 -- -- -- -- -- -- -- -- -- .00 .00 --

TOTAL -- -- -- -- -- -- -- -- -- -- 6.43 1.24
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 0.02 e0.02 s0.04 0.05 0.00 0.15 0.00 0.00 0.00 0.00 0.00
2 .00 .00 .00 .00 .00 s.01 .00 .00 .00 .00 .00 .00
3 .00 .10 .10 .42 .00 s.07 .00 .03 .24 1.11 .64 .18
4 .05 .01 .00 .25 .00 s.19 .00 .08 .00 .01 4.25 .00
5 .00 .09 .00 .49 .00 .00 .00 .21 .07 .00 .25 .00
6 .00 .12 .00 .17 .00 .01 .00 .56 .01 .00 .00 .56
7 .00 .00 .00 .15 .00 .01 .49 1.63 .00 1.51 .42 e2.53
8 .00 .00 .00 s.46 .00 .57 .32 .02 .06 .00 .00 .00
9 .08 .00 s.08 s.04 .00 s.20 .02 .00 .84 .00 .00 .00
10 .00 s.02 s.37 .00 .10 .00 .00 .00 .00 .00 .01 .00
11 .00 .00 .00 .00 .65 .00 .00 .00 1.26 .00 .00 .00
12 .00 .00 .00 .00 .00 .00 .00 .04 .00 .00 .00 .00
13 .30 .00 .00 .00 .00 s.16 .37 .26 .00 .00 .00 .00
14 .00 s.02 .00 .00 .00 .00 .00 .00 .00 .00 .00 .50
15 .00 s.01 .00 .00 .00 .00 .04 .00 .00 .00 .00 .04
16 .00 .00 .00 s.01 .19 .00 .09 .00 .10 .00 .00 .00
17 .00 s.01 .00 .00 .31 .69 .00 .00 .01 .00 .00 .00
18 .00 s.13 .00 s.02 .04 .21 .00 .00 .47 .00 .00 .00
19 .00 .00 .00 .00 .00 .01 .00 .00 .00 .39 .00 .00
20 .00 .00 .00 .00 .06 .00 .54 .00 .00 .05 .00 .02
21 .00 .00 .00 .00 .01 .00 .20 .00 .00 .00 .00 .00
22 .00 .00 .16 .00 .00 .00 .00 .00 .00 .14 .00 .00
23 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .00 .00
24 .24 .00 s.27 .00 .13 .00 .00 .35 .00 .00 .74 .02
25 .00 .00 s.25 .00 .00 .00 .11 .00 .00 .00 .11 .00
26 e.93 .00 .00 s.19 .00 .01 .32 .00 2.58 .00 .00 .00
27 e.24 .52 .00 .00 .07 .01 .00 .00 .01 .00 .00 .00
28 .00 e.05 .00 .00 .02 .20 .05 .14 .21 .00 .38 .00
29 .00 e.17 s.03 s.04 -- .01 .26 .08 e.13 .00 .00 .07
30 .00 e.00 s.02 .00 -- .00 .06 .00 .00 .00 .00 .41
31 .00 -- .00 .00 -- .62 -- .00 -- .00 .00 --

TOTAL 1.84 1.27 1.30 2.28 1.63 2.98 3.02 3.45 5.99 3.21 6.80 4.33
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data