LOCATION.-- Lat 38°55'21", long 89°14'12" (NAD of 1927), in NW1/4SE1/4 sec.31, T.6 N., R.1 W., Fayette County, Hydrologic Unit 07140202, on left bank at downstream side of bridge on State Highway 140, 300 ft downstream from railroad bridge, 1 mi east of Mulberry Grove, and at mile 14.1. | |
DRAINAGE AREA.-- 152 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: October 1970 to current year. | |
STAGE: Water years 1994 to current year. | |
SURFACE-WATER QUALITY | |
CHEMICAL: Water years 1978-91. | |
REVISED RECORDS.-- WDR IL-91-1: 1983(P). | |
GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 467.00 ft above NGVD of 1929. Prior to Oct. 1, 1975, at same site at datum 0.30 ft lower. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 17,900 ft3/s, Dec. 25, 1982, gage height, 19.99 ft; maximum gage height, 21.32 ft, May 13, 2002; no flow for many days in 1987-88, 1991. | |