Station list     Available data
ILLINOIS RIVER BASIN


05536121       CHICAGO RIVER AT CHICAGO LOCK 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.--
STAGE: August 1997 to current year.

GAGE.-- Water-stage recorder, phone telemeter, air-temperature thermocouple, anemometer and rain gage. 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.

EXTREMES FOR PERIOD OF RECORD.--
STAGE: Maximum gage height, 4.14 ft, Aug. 16, 1997; minimum, -2.93 ft., Jan. 10, 2001, based on gage record from Chicago River at Columbus Drive.

EXTREMES FOR CURRENT YEAR.-- Maximum gage height, 3.43 ft, Aug. 2; minimum, -2.93 ft, Jan. 10, based on gage record from Chicago River at Columbus Drive.
GAGE HEIGHT, FEET, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1-1.87-1.87-1.85-1.80-2.25-2.05-2.06-1.82-1.75-1.89-1.65-1.79
2-1.88-1.97-1.90-2.04-2.22-2.19-1.98-1.92-1.73-1.93.20-1.73
3-1.91-2.04-1.89-2.41-2.37-2.05-1.99-1.90-1.83-1.77-1.78-1.79
4-1.77-2.20-2.33-2.24-2.53-2.06-2.02-1.99-1.79-1.85-1.72-1.83
5-1.78-2.19-2.52-2.26-2.28-2.12-2.04-1.90-2.02-1.94-1.70-1.87
 
6-1.89-1.96-2.34-2.10-2.02-1.94-1.84-1.94-1.77-1.86-1.84-1.89
7-1.69-1.77-2.23-2.23-2.25-1.79-1.90-1.89-1.78-1.94-1.75-1.78
8-1.86-1.93-1.97-1.98-2.29-1.99-2.12-1.95-1.75-1.84-1.85-1.85
9-1.88-1.89-2.10-2.07-1.79-1.98-2.03-1.81-1.82-1.90-1.78-1.95
10-1.85-1.75-2.28-2.77-2.04-2.09-2.09-1.95-1.83-1.89-1.70-1.85
 
11-1.86-1.90-2.03-2.37-2.39-2.05-2.10-2.01-1.78-1.96-1.68-1.77
12-1.98-1.88-1.92-2.02-2.42-2.06-2.06-1.72-1.84-2.01-1.66-1.84
13-1.81-1.90-2.11-1.98-2.14-2.03-2.15-1.85-1.69-1.94-1.85-1.89
14-2.13-2.01-2.06-1.92-1.98-2.07-1.96-1.91-1.84-1.84-1.90-1.93
15-2.05-2.18-2.20-1.82-2.02-2.07-1.85-1.86-1.91-1.96-1.95-1.93
 
16-1.86-2.34-2.03-2.17-1.96-1.85-2.01-1.69-1.76-1.88-1.82-1.81
17-1.92-2.09-2.10-2.13-1.98-1.78-1.88-1.86-1.73-1.84-1.80-1.93
18-1.93-2.20-2.46-2.27-2.36-1.88-1.93-1.90-1.86-1.87-1.88-1.90
19-1.81-2.32-2.20-2.28-2.41-1.98-1.97-1.94-1.84-1.85-1.87-1.45
20-1.88-2.29-1.85-2.07-2.20-1.97-1.75-1.97-1.83-1.90-1.75-1.64
 
21-2.01-2.04-2.13-2.36-2.25-1.96-1.83-1.86-1.76-1.95-1.79-1.25
22-1.90-2.20-2.24-2.29-2.24-1.86-1.87-1.89-1.86-1.96-2.02-1.70
23-1.93-2.10-2.10-2.46-2.16-1.85-2.01-1.81-1.82-1.74-1.72-1.82
24-1.91-2.04-2.11-2.29-1.98-2.09-1.94-1.83-1.87-1.78-1.75-1.68
25-1.90-2.02-2.32-2.16-2.15-2.14-2.00-1.69-1.85-1.52-1.73-1.77
 
26-1.90-1.87-2.20-2.50-2.20-2.03-1.84-1.70-1.84-1.71-1.93-1.70
27-1.89-1.93-2.15-2.36-2.14-2.13-2.01-1.99-1.83-1.79-1.82-1.70
28-1.92-2.34-2.01-2.44-2.12-2.09-1.87-1.75-1.83-1.71-1.77-1.88
29-1.91-1.93-1.84-2.44----2.07-2.03-1.80-1.78-1.88-1.86-1.76
30-2.01-1.82-1.98-1.99----1.86-1.78-1.79-1.78-1.77-1.71-1.73
 
31-1.89----1.78-2.11----1.95----1.82----1.83-1.27---

MEAN-1.90-2.03-2.10-2.20-2.18-2.00-1.96-1.86-1.81-1.85-1.71-1.78
MAX-1.69-1.75-1.78-1.80-1.79-1.78-1.75-1.69-1.69-1.52.20-1.25
MIN-2.13-2.34-2.52-2.77-2.53-2.19-2.15-2.01-2.02-2.01-2.02-1.95

CAL YR 2000MEAN -1.87MAX -.29MIN -2.62
WTR YR 2001MEAN -1.95MAX .20MIN -2.77


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data