Station list     Available data
ST. LAWRENCE RIVER BASIN


04087440                         LAKE MICHIGAN AT CHICAGO LOCK AND DAM AT CHICAGO, IL



LOCATION.--Lat 41°53'18", long 87°36'27", in NE1/4 SE1/4 sec.10, T.39 N., R.14 E., Cook County, Hydrologic Unit 04060200, on the lakeside of the downstream left guidewall, approximately 75 ft west of the riverside gates of the Chicago Lock.

DRAINAGE AREA.--Indeterminate.

PERIOD OF RECORD.--August to September 1997.

GAGE.--Water-stage recorder. Datum of gage is 579.48 ft above sea level (Chicago City Datum).

REMARKS.--Gage provides stage data to determine Illinois' diversion of Lake Michigan water. Gage-height telemeter at station.

EXTREMES FOR PERIOD OF RECORD.--Maximum gage height, 3.47 ft, Aug. 17, 1997; minimum, 1.01 ft, Sept. 18, 1997.
GAGE HEIGHT, FEET, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 --- --- --- --- --- --- --- --- --- --- --- 2.38
2 --- --- --- --- --- --- --- --- --- --- --- 2.53
3 --- --- --- --- --- --- --- --- --- --- --- 2.46
4 --- --- --- --- --- --- --- --- --- --- --- 2.29
5 --- --- --- --- --- --- --- --- --- --- --- 2.05
 
6 --- --- --- --- --- --- --- --- --- --- --- 2.11
7 --- --- --- --- --- --- --- --- --- --- --- 2.48
8 --- --- --- --- --- --- --- --- --- --- --- 2.48
9 --- --- --- --- --- --- --- --- --- --- --- 2.45
10 --- --- --- --- --- --- --- --- --- --- --- 2.49
 
11 --- --- --- --- --- --- --- --- --- --- --- 2.38
12 --- --- --- --- --- --- --- --- --- --- --- 2.33
13 --- --- --- --- --- --- --- --- --- --- --- 2.31
14 --- --- --- --- --- --- --- --- --- --- --- 2.36
15 --- --- --- --- --- --- --- --- --- --- 2.54 2.32
 
16 --- --- --- --- --- --- --- --- --- --- 2.65 2.28
17 --- --- --- --- --- --- --- --- --- --- 2.90 2.31
18 --- --- --- --- --- --- --- --- --- --- 2.88 1.95
19 --- --- --- --- --- --- --- --- --- --- 2.85 2.12
20 --- --- --- --- --- --- --- --- --- --- 2.91 2.37
 
21 --- --- --- --- --- --- --- --- --- --- 2.98 2.16
22 --- --- --- --- --- --- --- --- --- --- 2.80 2.04
23 --- --- --- --- --- --- --- --- --- --- 2.73 2.24
24 --- --- --- --- --- --- --- --- --- --- 2.88 1.85
25 --- --- --- --- --- --- --- --- --- --- 3.00 1.94
 
26 --- --- --- --- --- --- --- --- --- --- 2.85 2.18
27 --- --- --- --- --- --- --- --- --- --- 2.49 1.94
28 --- --- --- --- --- --- --- --- --- --- 2.45 1.98
29 --- --- --- --- --- --- --- --- --- --- 2.46 1.73
30 --- --- --- --- --- --- --- --- --- --- 2.31 1.94
 
31 --- --- --- --- --- --- --- --- --- --- 2.48 ---

MEAN --- --- --- --- --- --- --- --- --- --- --- 2.21
MAX --- --- --- --- --- --- --- --- --- --- --- 2.53
MIN --- --- --- --- --- --- --- --- --- --- --- 1.73


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data