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, 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, -2.89 ft., May 15, 2000.

EXTREMES FOR CURRENT YEAR.-- Maximum gage height, 2.62 ft, Sept. 12; minimum, -2.89 ft, May 15.
GAGE HEIGHT, FEET, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1-1.26-1.84-1.76-2.21-1.85-1.93-2.11-1.70-1.88-1.74-1.72-1.76
2-1.40-1.86-1.87-2.08-1.93-1.76-2.05-1.83-1.83-1.87-1.75-1.81
3-1.34-1.95-1.72-1.94-1.86-1.71-2.01-1.88-1.95-1.41-1.83-1.86
4-1.34-1.86-1.74-1.80-1.85-1.72-1.82-1.89-1.91-1.58-1.81-1.80
5-1.27-1.75-1.79-1.89-1.87-1.74-1.86-1.77-1.95-1.70-1.87-1.89
 
6-1.36-1.88-1.68-2.22-1.94-1.92-2.20-2.02-1.98-1.75-1.64-1.86
7-1.53-1.84-1.69-2.16-2.02-1.86-2.02-2.22-1.75-1.76-1.85-1.82
8-1.53-1.73-1.67-1.94-1.84-1.84-1.72-2.08-1.77-1.79-1.80-1.91
9-1.53-1.88-1.77-1.83-1.88-1.90-1.83-1.98-1.82-1.78-1.69-1.81
10-1.59-1.75-1.75-1.70-1.75-1.94-1.83-1.76-1.79-1.80-1.75-1.75
 
11-1.54-1.97-1.86-2.00-1.76-2.00-1.80-1.67-1.77-1.60-1.86-1.04
12-1.48-1.84-1.77-2.07-2.08-1.80-1.95-1.74-1.95-1.74-1.81-.29
13-1.66-1.77-1.76-1.96-1.89-1.84-1.93-1.44-1.86-1.89-1.88-1.75
14-1.66-1.77-1.82-1.90-1.90-1.83-2.14-1.48-1.82-1.94-1.79-1.79
15-1.59-1.95-1.73-1.75-1.90-1.80-2.05-2.03-1.71-1.86-1.70-1.81
 
16-1.57-1.98-1.85-1.97-1.84-1.91-1.92-2.53-1.84-1.95-1.78-1.70
17-1.69-1.84-2.00-1.82-1.81-1.77-1.59-2.56-1.73-1.89-1.76-1.77
18-1.74-1.71-1.88-1.87-2.00-1.72-1.83-2.62-1.91-1.84-1.86-1.90
19-1.79-1.77-1.86-1.96-1.84-1.99-1.68-1.64-1.88-1.76-1.75-1.91
20-1.87-1.84-1.82-1.89-1.89-1.83-.70-1.60-1.73-1.81-1.77-1.89
 
21-1.77-1.72-1.90-1.87-1.81-1.83-.97-1.52-1.86-1.89-1.88-1.95
22-1.75-1.81-1.79-1.87-1.70-1.91-1.61-1.78-1.84-1.84-1.86-2.00
23-1.69-1.79-1.78-1.72-1.68-1.88-1.60-1.78-1.92-1.88-1.70-1.85
24-1.69-1.82-2.12-1.81-1.64-1.88-1.72-1.78-1.87-1.76-1.74-1.69
25-1.79-1.66-1.96-1.88-1.69-1.93-1.62-1.87-1.55-1.85-1.85-1.80
 
26-1.85-1.82-2.19-1.84-1.71-1.79-1.82-1.89-1.76-1.80-1.85-1.92
27-1.97-1.76-2.03-1.85-1.73-1.83-1.79-1.90-1.84-1.80-1.84-1.88
28-1.88-1.66-1.84-1.86-1.83-1.93-1.84-1.63-1.68-1.82-1.83-1.87
29-1.72-1.74-1.97-1.88-1.85-1.76-1.95-1.59-1.69-1.77-1.82-1.92
30-1.67-1.78-2.17-1.84----1.91-1.81-1.66-1.85-1.78-1.83-1.97
 
31-1.79----2.06-1.81----1.88----1.74----1.81-1.77---

MEAN-1.62-1.81-1.86-1.91-1.84-1.85-1.79-1.86-1.82-1.79-1.79-1.77
MAX-1.26-1.66-1.67-1.70-1.64-1.71-.70-1.44-1.55-1.41-1.64-.29
MIN-1.97-1.98-2.19-2.22-2.08-2.00-2.20-2.62-1.98-1.95-1.88-2.00

WTR YR 2000MEAN -1.81MAX -.29MIN -2.62


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data