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LOCATION.-- Lat 41°52'54", long 87°52'09" (NAD of 1927), in SW1/4SE1/4 sec.9, T.39 N., R.12 E., Cook County, Hydrologic Unit 07120004, on right bank at downstream side of bridge on Washington Boulevard in Bellwood, 1,050 ft upstream from railroad bridge, and at mile 3.2. |
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DRAINAGE AREA.-- 17.9 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: August 1950 to June 1951, October 1951 to current year. |
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STAGE: Water years 1994 to current year. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1979-91, July 2000. |
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MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, water year 2000. |
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BIOLOGICAL |
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ALGAE: Water year 2000. |
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BENTHIC MACROINVERTEBRATES: Water year 2000. |
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HABITAT: Water year 2000-01. |
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REVISED RECORDS.-- WSP 1338: 1952. WSP 1708: 1958, 1959(P). WDR IL-75-1: Drainage area. |
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GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 617.65 ft above NGVD of 1929 (Cook County Highway Department bench mark) (617.36 ft NAVD 1988). Prior to Oct. 26, 1951, at datum 2.00 ft higher. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,120 ft3/s, Aug. 14, 1987, gage height, 12.84 ft; no flow Sept. 14, 1962. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |