Station list     Available data
ILLINOIS RIVER BASIN


05536121                               CHICAGO RIVER AT CHICAGO LOCK AND DAM AT CHICAGO, IL



LOCATION.--Lat 41°53'18", long 87°36'27", in NE1/4SE1/4 sec.10, T.39 N., R.14 E., Cook County, Hydrologic Unit 07120003, 0.2 mi east of Lake Shore Drive in Chicago, on left downstream side of lock guidewall, 100 ft downstream of the river-side lock gates at the Chicago River Lock and Dam.

DRAINAGE AREA.--Indeterminate.

PERIOD OF RECORD.--August 1997 to current year.

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, 4.14 ft, Aug. 16, 1997; minimum, -2.72 ft., Aug. 6, 1998.

EXTREMES FOR CURRENT YEAR.--Maximum gage height, 0.49 ft, Jan. 23; minimum, -2.65 ft, Jan. 22.
GAGE HEIGHT, FEET, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1-1.92-1.95-1.69-1.76-1.93-1.80-1.85-1.65-1.61-1.79------
2-2.01-2.03-1.74-1.78-1.77-1.73-1.79-1.67-1.35-1.75------
3-1.96-2.06-1.76-1.60-1.81-1.57-1.85-1.70-1.60-1.83------
4-1.94-1.82-1.67-1.64-1.82-1.72-1.78-1.82-1.66-1.78------
5-1.99-1.76-1.64-1.95-1.84-1.88-1.91-1.88-1.83-1.80------
 
6-1.89-2.04-1.65-2.15-1.95-1.70-1.82-1.70-1.91-1.87------
7-2.00-1.80-1.55-2.24-1.97-1.73-1.77-1.68-1.91-1.90------
8-1.88-1.84-1.68-2.14-1.95-1.78-1.77-1.80-1.86-1.90------
9-1.99-1.89-1.59-2.15-1.81-1.78-1.46-1.92-1.91-1.88------
10-1.84-1.46-1.66-2.17-1.81-1.70-1.70-1.91-1.89-1.82----1.86
 
11----1.57-1.59-2.17-1.89-1.76-1.76-1.83-1.78-1.97----1.78
12----1.60-1.62-2.14-1.69-1.59-1.66-1.84-1.95-1.85----1.72
13-1.87-1.65-1.64-2.17-1.71-1.59-1.67-1.80-1.53-1.79----1.69
14-1.96-1.73-1.72-1.98-1.79-1.78-1.71-1.79-1.66-1.78----1.71
15-1.96-1.79-1.68-1.95-1.81-1.80-1.89-1.67-1.60-1.79----1.58
 
16-1.93-1.83-1.70-1.87-1.78-1.61-1.72-1.90-1.64-1.80----1.40
17-1.52-1.90-1.64-1.91-1.84-1.58-1.26-1.87-1.78-1.90----1.38
18-1.57-1.79-1.68-1.72-1.91-1.53-1.71-1.67-1.84-1.76----1.40
19-1.79-1.67-1.74-1.96-1.87-1.70-1.65-1.76-1.89-1.87----1.30
20-1.78-1.82-1.78-1.88-1.84-1.55-1.68-1.90-1.89-1.91----1.44
 
21-1.89-1.94-1.70-1.95-1.99-1.60-1.76-1.83-1.83-2.08----1.31
22-1.89-1.87-1.82-1.68-1.88-1.84-1.61-1.85-1.91-------1.46
23-1.86-1.94-1.71-.47-1.81-1.83-.71-1.70-1.88-------1.32
24-1.74-1.92-1.70-1.50-1.88-1.89-1.38-1.84-1.77-------1.40
25-1.80-1.82-1.80-1.42-1.79-1.94-1.47-1.72-1.78-------1.46
 
26-2.03-1.73-1.65-1.90-1.77-1.84-1.60-1.94-1.82-------1.37
27-1.86-1.80-1.62-1.72-1.71-1.84-1.51-1.95-1.91-------1.39
28-1.85-1.90-1.57-1.47-1.61-1.80-1.35-1.80-1.91-------1.60
29-1.88-1.82-1.61-1.69----1.88-1.34-1.83-1.89-------1.77
30-1.82-1.63-1.77-1.82----1.77-1.64-1.98-1.98-------1.02
 
31-1.83----1.71-1.91----1.70----1.83------------

MEAN----1.81-1.68-1.83-1.83-1.74-1.63-1.81-1.79---------
MAX----1.46-1.55-.47-1.61-1.53-.71-1.65-1.35---------
MIN----2.06-1.82-2.24-1.99-1.94-1.91-1.98-1.98---------


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data