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LOCATION.-- Lat 39°34'56", long 89°34'20" (NAD of 1927), in NE1/4NE1/4 sec.18, T.13 N., R.4 W., Sangamon County, Hydrologic Unit 07130007, on left bank at upstream side of bridge on County Highway 28, 0.3 mi south of Pawnee, 0.7 mi upstream from Henkle Branch, and at mile 21.0. |
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DRAINAGE AREA.-- 52.2 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1967 to September 1985. |
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REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-83-2: 1968-70 (P), 1971(M), 1973(P), 1979, 1981-82. |
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GAGE.-- Water-stage recorder. Datum of gage is 564.81 ft above NGVD of 1929 (564.44 ft NAVD 1988). |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 4,900 ft3/s, Apr. 21, 1973, gage height, 17.70 ft; maximum gage height, 20.41 ft, May 1, 1983; no flow for many days in most years. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |