LOCATION.-- Lat 38°19'10", long 88°50'50" (NAD of 1927), in NW1/4SW1/4 sec.26, T.2 S., R.3 E., Jefferson County, Hydrologic Unit 07140106, on left bank at downstream side of bridge on State Highway 15,250 ft upstream from Southern Railway bridge, 3 mi east of Mt. Vernon, and at mile 3.6. | |
DRAINAGE AREA.-- 21.1 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: October 1960 to October 1982. | |
REVISED RECORDS.-- WDR IL-75-1: Drainage area. | |
GAGE.-- Water-stage recorder. Datum of gage is 436.76 ft above NGVD of 1929. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,530 ft3/s May 8, 1961, gage height, 17.05 ft, from rating curve extended above 1,800 ft3/s; no flow for many days each year. | |