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LOCATION.-- Lat 41°50'45", long 87°51'08" (NAD of 1927), in SW1/4NE1/4 sec.27, T.39 N., R.12 E., Cook County, Hydrologic Unit 07120004, on upstream side of bridge on Maple Avenue in Brookfield, 300 ft downstream from Addison Creek, 1.0 mi upstream from diversion to Des Plaines River, and at mile 3.5. |
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DRAINAGE AREA.-- 146 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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STAGE: October 1989 to current year. |
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PARTIAL RECORD: Low-flow measurements, July 1961 to September 1962. |
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GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 608.04 ft above NGVD of 1929 (levels by Illinois Department of Transportation). |
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EXTREMES FOR PERIOD OF RECORD.-- |
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STAGE: Maximum gage height, 10.63 ft, Feb. 21, 1997; minimum, 0.33 ft, July 5, 2002. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |