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LOCATION.-- Lat 40°35'12", long 89°16'42" (NAD of 1927), in NW1/4NE1/4 sec. 36, T.25 N., R.2 W., Tazewell County, Hydrologic Unit 07130004, at Rocky Ford bridge, 0.5 mi upstream from Rock Creek, 0.8 mi upstream from Hollands Creek, 4.5 mi southwest of Congerville, and at mile 53.7. |
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DRAINAGE AREA.-- 776 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1983 to September 1986. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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SEDIMENT: July 1983 to September 1986. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 4,720 mg/L Mar. 28, 1985; minimum daily mean, 1 mg/L Jan. 26 to Feb. 17, 1985. |
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SUSPENDED-SEDIMENT LOADS: Maximum daily, 96,400 tons Feb. 23, 1985; minimum daily, 0.26 ton Feb. 13-17, 1985. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |