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LOCATION.-- Lat 40°29'51", long 90°03'12" (NAD of 1927), in SE1/4SE1/4 sec.16, T.6 N., R.4 E., Fulton County, Hydrologic Unit 07130005, on right bank 40 ft upstream from highway bridge at north edge of St. David, 4.5 mi upstream from Evelyn Branch and at mile 19.2. |
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DRAINAGE AREA.-- 28.0 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: November 1971 to December 1985. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1975-86. |
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SEDIMENT: Water years 1972-80. |
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SPECIFIC CONDUCTANCE: Water years 1972-83. |
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WATER TEMPERATURE: Water years 1972-83. |
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REVISED RECORDS.-- WDR IL-81-2: Drainage area. |
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GAGE.-- Water-stage recorder, specific conductance and temperature recorder. Datum of gage is 548.88 ft above NGVD of 1929 (548.59 ft NAVD 1988). |
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REMARKS.-- Suspended-sediment samples were collected by a local observer on a daily basis with additional samples collected during high runoff periods. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,080 ft3/s, June 23, 1974, gage height, 10.25 ft; maximum gage height, 10.54 ft, June 2, 1980; minimum daily discharge, 1.4 ft3/s, Oct. 1, 4-6, 1984. |
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SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 3,860 mg/L July 27, 1976; minimum daily mean, 3 mg/L Dec. 17, 18, 1979. |
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SUSPENDED-SEDIMENT LOADS: Maximum daily, 6,660 tons June 22, 1974; minimum daily, 0.03 ton Dec. 17, 18, 1979. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |