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
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
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------------------------------2.542.32
 
16------------------------------2.652.28
17------------------------------2.902.31
18------------------------------2.881.95
19------------------------------2.852.12
20------------------------------2.912.37
 
21------------------------------2.982.16
22------------------------------2.802.04
23------------------------------2.732.24
24------------------------------2.881.85
25------------------------------3.001.94
 
26------------------------------2.852.18
27------------------------------2.491.94
28------------------------------2.451.98
29------------------------------2.461.73
30------------------------------2.311.94
 
31------------------------------2.48---

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


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Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data