LOCATION.-- Lat 41°53'30", long 87°38'30" (NAD of 1927), in NW1/4SW1/4 sec.12, T.40 N., R.13 E., Cook County, Hydrologic Unit 07120003, on right upstream side of Grand Avenue bridge in Chicago, 0.6 mi upstream from the confluence with the main stem of the Chicago River and at mile 36.0. |
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DRAINAGE AREA.-- 180 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: July 2, 2002 to current year. |
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SURFACE-WATER QUALITY |
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PHYSICAL AND CHEMICAL: Water years 2002 to current year. |
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WATER TEMPERATURE: September 2002 to current year. |
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GAGE.-- Water-stage recorder, acoustic velocity meter and water-temperature sensor. Datum of gage is 579.48 ft above NGVD of 1929 (Chicago City datum). |
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REMARKS.-- This station provides data for a water-quality model. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum daily discharge, 4,430 ft3/s, Aug. 22, 2002, minimum daily discharge, -20 ft3/s, Jan. 31, 2004, due to regulation. |
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WATER TEMPERATURE: Maximum recorded, 25.6°C, Aug. 27, 2003; minimum recorded, 0.5°C, Jan. 31, 2004. |
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EXTREMES FOR CURRENT YEAR.-- Maximum recorded water temperature, 25.1°C, Sept. 10; minimum recorded, 22.6°C, Sept. 4. |
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REMARKS FOR CURRENT YEAR.-- Water-temperature data are from six temperature sensors on right bank with sensor #1 being the lowest in the water column and sensor #6 being the highest. |
Water Temperature, Sensor #1, degrees Celsius WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MAXIMUM VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
2 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.2 |
3 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.4 |
4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.1 |
5 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.0 |
6 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.3 |
7 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.5 |
8 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.6 |
9 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.8 |
10 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 25.1 |
11 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
12 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
13 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
14 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
15 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
16 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
17 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
18 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
19 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
20 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
21 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
22 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
23 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
24 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
25 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
26 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
27 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
28 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
29 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
30 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
31 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MEAN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MAX | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MIN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
Water Temperature, Sensor #2, degrees Celsius WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MAXIMUM VALUES |
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---|---|---|---|---|---|---|---|---|---|---|---|---|
DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
2 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.2 |
3 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.3 |
4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.8 |
5 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.9 |
6 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.1 |
7 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.3 |
8 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.5 |
9 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.9 |
10 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 25.1 |
11 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
12 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
13 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
14 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
15 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
16 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
17 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
18 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
19 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
20 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
21 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
22 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
23 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
24 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
25 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
26 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
27 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
28 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
29 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
30 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
31 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MEAN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MAX | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MIN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
Water Temperature, Sensor #3, degrees Celsius WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MAXIMUM VALUES |
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---|---|---|---|---|---|---|---|---|---|---|---|---|
DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
2 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.1 |
3 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.2 |
4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.5 |
5 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.7 |
6 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.8 |
7 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.1 |
8 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.4 |
9 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.8 |
10 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.9 |
11 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
12 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
13 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
14 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
15 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
16 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
17 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
18 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
19 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
20 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
21 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
22 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
23 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
24 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
25 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
26 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
27 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
28 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
29 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
30 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
31 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MEAN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MAX | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MIN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
Water Temperature, Sensor #4, degrees Celsius WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MAXIMUM VALUES |
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---|---|---|---|---|---|---|---|---|---|---|---|---|
DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
2 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.2 |
3 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.2 |
4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.5 |
5 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.8 |
6 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.9 |
7 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.2 |
8 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.5 |
9 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.9 |
10 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 25.0 |
11 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
12 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
13 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
14 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
15 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
16 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
17 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
18 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
19 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
20 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
21 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
22 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
23 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
24 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
25 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
26 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
27 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
28 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
29 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
30 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
31 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MEAN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MAX | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MIN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
Water Temperature, Sensor #5, degrees Celsius WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MAXIMUM VALUES |
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---|---|---|---|---|---|---|---|---|---|---|---|---|
DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
2 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.2 |
3 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.1 |
4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.4 |
5 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.6 |
6 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.9 |
7 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.2 |
8 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.5 |
9 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.8 |
10 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 25.0 |
11 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
12 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
13 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
14 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
15 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
16 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
17 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
18 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
19 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
20 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
21 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
22 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
23 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
24 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
25 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
26 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
27 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
28 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
29 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
30 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
31 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MEAN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MAX | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MIN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
Water Temperature, Sensor #6, degrees Celsius WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MAXIMUM VALUES |
||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
2 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.2 |
3 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.0 |
4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.4 |
5 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.6 |
6 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 23.8 |
7 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.1 |
8 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.4 |
9 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.8 |
10 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 24.9 |
11 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
12 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
13 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
14 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
15 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
16 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
17 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
18 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
19 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
20 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
21 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
22 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
23 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
24 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
25 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
26 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
27 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
28 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
29 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
30 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
31 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MEAN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MAX | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
MIN | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |