LOCATION.-- Lat 40°28'24", long 90°08'37" (NAD of 1927), in SE1/4NE1/4 sec.27, T.6 N., R.3 E., Fulton County, Hydrologic Unit 07130005, on left bank at upstream side of concrete curb on private road, 1.3 mi upstream from mouth, and 2.5 mi northwest of Bryant. | |
DRAINAGE AREA.-- 7.12 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: March 1975 to September 1992. | |
SURFACE-WATER QUALITY | |
CHEMICAL: Water years 1975-92. | |
SEDIMENT: Water years 1976-80. | |
SPECIFIC CONDUCTANCE: Water years 1975-80. | |
WATER TEMPERATURE: Water years 1975-80. | |
REVISED RECORDS.-- WDR IL-81-2: Drainage area. | |
GAGE.-- Water-stage recorder. Datum of gage is 523.25 ft above NGVD of 1929 (Metropolitan Water Reclamation District of Greater Chicago [MWRDGC] bench mark). | |
REMARKS.-- Dam, 1.6 mi upstream from the gage retains an indeterminate amount of water and is maintained by MWRDGC. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 685 ft3/s June 5, 1986, from rating curve extended above 285 ft3/s, gage height, 8.91 ft, from flood mark; minimum discharge 0.16 ft3/s Oct. 1, 2, 1992. | |
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 1,150 mg/L Mar. 4, 1976; minimum daily mean, 5 mg/L Apr. 15, 1976. | |
SUSPENDED-SEDIMENT LOADS: Maximum daily, 181 tons May 6, 1977; minimum daily, 0.02 ton Feb. 13-20, 1980. |