Station list     Available data
ILLINOIS RIVER BASIN


05533400       SAWMILL CREEK NEAR LEMONT, IL



LOCATION.-- Lat 41°42'28", long 87°57'47", in NE1/4SW1/4 sec.10, T.37 N., R.11 E., Du Page County, Hydrologic Unit 07120004, on concrete abutment on right bank, 50 ft upstream from bridge on Bluff Road at south edge of Argonne National Laboratory, 2.5 mi northeast of Lemont, and at mile 1.

DRAINAGE AREA.-- 13.0 mi2

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: December 1985 to current year.
 

STAGE: Water years 1994-2000.
 

PARTIAL RECORD: Annual maximum, water years 1961-79.
PRECIPITATION: April 1986 to current year.

REVISED RECORDS.-- WDR IL-77-1: 1961-76(M).

GAGE.-- Water-stage recorder, phone telemeter, rain gage, and crest-stage gage. Datum of gage is 630.00 ft above sea level. Oct. 11, 1961, to Sept. 30, 1976, crest-stage gage on bridge 50 ft downstream at datum 11.22 ft higher.

REMARKS.-- For precipitation records, 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.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,070 ft3/s, July 18, 1996, gage height, 17.53 ft; no flow at times in most years.
PRECIPITATION: Maximum, 6.17 in., July 17, 1996 but may have been greater during periods of missing record.

EXTREMES FOR CURRENT YEAR.--Maximum, 2.86 in., July 10, 2000.

PRECIPITATION, TOTAL, INCHES, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY SUM VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 0.00 0.01 0.00 0.00 0.00 0.02 0.00 0.38 0.01 0.00 0.12 0.00
2 .06 .00 .00 .01 .00 .00 .00 .00 .00 .77 .09 .00
3 .73 .00 .41 .15 s.02 .00 .02 .00 .00 .44 .00 .00
4 .00 .00 .93 .00 s.01 .00 .00 .00 .00 .00 .00 .00
5 .00 .00 .80 .00 .00 .00 .00 .00 .01 .00 .43 .00
6 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .98 .00
7 .00 .00 .00 .00 s.08 .00 .34 .00 .00 .00 .00 .00
8 .02 .00 .00 .09 .00 .02 .13 e1.20 .00 .00 .00 .02
9 .00 .00 .03 .19 s.01 .00 .00 e.80 .00 .00 .00 .00
10 .00 .00 .00 .15 .00 .00 .14 .00 e.05 2.86 .00 .64
11 .00 .00 .00 .00 .00 .00 .00 e.22 e1.23 .00 .00 2.55
12 .00 .00 .00 .00 .00 .01 .00 e.24 e.52 .00 .00 .08
13 .03 .00 .00 .00 .00 .05 .00 .00 e.40 .02 .00 .00
14 .00 .00 .05 s.02 .00 .01 .00 .00 .64 .00 .00 .33
15 .00 .00 .14 .00 .00 .07 .00 .00 .00 .00 .00 .00
16 .09 .00 .00 .00 .00 .00 1.01 e.15 .03 .00 .00 .00
17 .00 .00 .00 .00 .00 .00 .00 e.03 .00 .00 e1.16 .00
18 .00 .00 s.03 .00 .00 .00 .00 e.57 .00 .03 .00 .00
19 .02 .01 s.08 .00 s.01 .27 .54 e.02 .00 .00 .00 .00
20 .00 .00 .01 .00 .00 .19 2.34 .00 .51 .00 .00 .46
21 .00 .00 .01 s.05 s.42 .00 .40 .00 .00 .00 .00 .00
22 .00 .14 .00 .00 .00 .17 .00 e.19 .00 .00 .00 .47
23 .00 .55 .00 .00 .00 .00 .22 .00 .14 .00 .25 .31
24 .00 .00 .00 .00 .56 .20 .00 .00 1.45 .00 .00 e.26
25 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00
26 .00 .03 .00 .00 .01 .19 .00 e.04 .00 .00 .00 .00
27 .00 .00 .00 s.01 .00 .02 .00 2.06 .00 .01 .00 .00
28 .00 .01 .00 .00 .00 .00 .00 .18 .09 .00 .00 .00
29 .00 .00 .00 .00 .00 .00 .03 .10 .11 .00 .01 .00
30 .00 .00 .00 .00 -- .00 .00 .02 .00 .65 .00 .00
31 .00 -- .00 .00 -- .00 -- .88 -- .49 .00 --

TOTAL 0.95 0.75 2.49 0.67 1.12 1.22 5.17 7.08 5.21 5.27 3.04 5.12
s Snowfall-affected precipitation
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data