USGS Water-Year Summary 2019
05595200 RICHLAND CREEK NEAR HECKER, IL
LOCATION - Lat 38°19'26", long 89°58'14" referenced to North American Datum of 1983, in SW 1/4 SE 1/4 sec.27, T.2 S., R.8 W., St. Clair County, IL, Hydrologic Unit 07140204, on left bank at downstream side of bridge on State Highway 156, 2 mi northeast of Hecker, 5 mi west of New Athens, and at mile 17.3.
DRAINAGE AREA - 129 mi².
- WDR IL-75-1: Drainage area.
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: October 1969 to current.
STAGE: Water years 1995 to current. October 1980 to September 1994 (8 a.m. gage heights).
CHEMICAL: Water years 1978-91.
MISCELLANEOUS: Water chemistry and chlorohyll-a in algae, June-September 2007.
GAGE - Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 375.00 ft above NGVD of 1929 (374.50 ft NAVD 1988). June 28, 1976, to Nov. 9, 1978, nonrecording gage at same site and datum.
EXTREMES FOR PERIOD OF RECORD - SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 23,400 ft³/s, April 29, 1996, gage height, 44.40 ft, from floodmark; minimum daily discharge, 4.2 ft³/s, Oct. 17, 1976.