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LOCATION.-- Lat 40°34'23", long 89°39'17" (NAD of 1927), in SW1/4 sec. 24, T.7 N., R.7 E., Tazewell County, Hydrologic Unit 07130003, at State Highway 9 bridge at Pekin, 5.1 mi upstream from Mackinaw River and at mile 152.9. |
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DRAINAGE AREA.-- 14,585 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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SEDIMENT: October 1994 to September 1997. |
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MISCELLANEOUS: Sediment concentration and particle size, water years 1994-97. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily 1,090 mg/L, Feb. 21, 1997; minimum daily 15 mg.L, May 22, 1995. |
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SUSPENDEDD-SEDIMENT LOADS: Maximum daily, 91,500 tons, July 21, 1996; minimum daily 295 tons, Jan. 23, 1997. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |