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. | |
DRAINAGE AREA.-- 28.0 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: November 1971 to December 1985. | |
SURFACE-WATER QUALITY | |
CHEMICAL: Water years 1975-86. | |
SEDIMENT: Water years 1977-80. | |
SPECIFIC CONDUCTANCE: Water years 1972-83. | |
WATER TEMPERATURE: Water years 1972-83. | |
REVISED RECORDS.-- WDR IL-81-2: Drainage area. | |
GAGE.-- Water-stage recorder, specific conductance and temperature recorder. Datum of gage is 548.88 ft above NGVD of 1929. | |
REMARKS.-- Suspended-sediment samples were collected by a local observer on a daily basis with additional samples collected during high runoff periods. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
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. | |
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 3,860 mg/L July 27, 1976; minimum daily mean, 3 mg/L Dec. 17, 18, 1979. | |
SUSPENDED-SEDIMENT LOADS: Maximum daily, 6,660 tons June 22, 1974; minimum daily, 0.03 ton Dec. 17, 18, 1979. | |