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LOCATION.-- Lat 41°51'23", long 88°12'14" (NAD of 1983), in NW1/4NW1/4 sec.22, T.39 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on left downstream side of bridge at intersection of Wilson Street and Joliet Road, 0.5 mi south of West Chicago, and at mile 0.5. |
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DRAINAGE AREA.-- 18.1 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: November 1985 to current year. |
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STAGE: Water years 1994 to current year. |
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PARTIAL RECORD: Annual maximum, water years 1961-80. |
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PRECIPITATION: April 1986 to current year. |
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REVISED RECORDS.-- WDR IL-77-1: 1961-76(M). |
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GAGE.-- Water-stage recorder, phone telemeter, rain gage, and crest-stage gage. Datum of gage is 700.00 ft above NGVD of 1929 (699.75 ft NAVD 1988). Prior to November 8, 1985 at datum 5.44 ft higher. |
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REMARKS.-- Collection, computation and publication of precipitation data do not necessarily conform to standards used by the National Weather Service. Precipitation data could be subject to error for days with freezing and/or thawing of precipitation. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,980 ft3/s, July 18, 1996, gage height, 9.24 ft; no flow, Aug. 6, 7, 2005. |
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PRECIPITATION: Maximum daily total, 6.88 in., July 17, 1996, but may have been greater during periods of missing record. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |