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
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
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 2000 MEAN -1.87 MAX -.29 MIN -2.62
WTR YR 2001 MEAN -1.95 MAX .20 MIN -2.77


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data