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LOCATION.-- Lat 38°24'22", long 89°52'26" (NAD of 1927), in NE1/4NE1/4 sec.33, T.1 S., R.7 W., St. Clair County, Hydrologic Unit 07140204, on left bank at downstream side of bridge on State Highway 15, 2.2 mi southeast of Freeburg, 4.8 mi northwest of Fayetteville, and at mile 9.6. |
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DRAINAGE AREA.-- 464 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1970 to current year. |
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STAGE: Water years 1995 to current year. October 1980 to September 1994 (8:00 a.m. gage heights). |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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REVISED RECORDS.-- WDR IL-73-1: Drainage area. |
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GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 381.40 ft above NGVD of 1929 (380.97 ft NAVD 1988). |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 15,300 ft3/s, May 19, 1995, gage height, 25.38 ft; no flow, Aug. 4-6, 1993, during period of backwater from the Mississippi River; minimum daily discharge unaffected by backwater, 0.41 ft3/s, Sept. 17, 1983. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |