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, 0.47 ft, May 7; minimum, -2.72 ft, Aug. 6.
GAGE HEIGHT, FEET, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1-1.74-1.61-------1.75----1.72-1.79-1.63-1.73-1.61---
2-1.69-1.78-------1.63----1.73-1.75-1.71-1.66-1.64---
3-1.62-1.67-------1.73----1.69-1.88-1.67-1.60-1.71---
4-1.59-1.69-------1.76----1.64-1.71-1.73-1.42-1.31---
5-1.64-1.73-------1.83----1.73-1.69-1.73-1.49-1.68---
 
6-1.61-1.71-------1.82----1.80-1.81-1.65-1.69-1.88---
7-1.56-1.69-------1.76---e-1.66-.57-1.85-1.62-1.45---
8-1.54-1.71-------1.81-------.77-1.70-1.59-1.78---
9-1.47-1.72-------1.78-------1.62-1.60-1.54-1.48---
10-1.64-1.73-------1.83-1.42----1.60-1.63-1.67-1.62---
 
11-1.60-1.73-------1.87-1.51----1.66-1.71-1.67-1.56---
12-1.59-1.66-------1.68-1.63----1.61-1.70-1.66-1.60---
13-1.72-1.75-------1.78-1.60----1.73-1.52-1.58-1.72e-1.95
14-1.72-1.70----1.79-1.67-1.59----1.74-1.72-1.61-1.67-1.86
15-1.69-1.57----1.80-1.71-1.72----1.82-1.78-1.52-1.49-1.94
 
16-1.76-1.76----1.78-1.80-1.68----1.70-1.66-1.64-1.70-1.86
17-1.72-1.63----1.73-1.73-1.63----1.85-1.69-1.58-1.65-1.93
18-1.72-1.74----1.81-1.54-1.67----1.69-1.72-1.53-1.61-1.81
19-1.65-1.61----1.78e-1.56-.98----1.73-1.66-1.57-1.67-1.98
20-1.79-------1.76----1.58----1.72-1.59-1.58-1.68-1.91
 
21-1.69-------1.81----1.29----1.81-1.76-1.77-1.60-1.95
22-1.68-------1.82----1.27----1.76-1.65-1.67-1.53-1.92
23-1.77-------1.74----1.72e-1.74-1.77-1.69-1.50-1.48-1.91
24-1.71-------1.90----1.64-1.67-1.64-1.67-1.77e-1.52-1.94
25-1.72-------1.82----1.73-1.72-1.75-1.55-1.63----1.91
 
26-1.74-------1.77----1.62-1.80-1.75-1.38-1.80----1.81
27-1.27-------1.73----1.62-1.73-1.79-1.49-1.54----1.88
28-1.58-------1.74----1.67-1.72-1.65-1.63-1.62----2.00
29-1.60-------1.74----1.61-1.78-1.79-1.62-1.68----1.95
30-1.64-------1.81----1.63-1.80-1.72-1.63-1.66----1.96
 
31-1.57-------1.74----1.80----1.78----1.63------

MEAN-1.65-------------------1.67-1.66-1.62------
MAX-1.27-------------------.57-1.38-1.42------
MIN-1.79-------------------1.88-1.85-1.80------

e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data