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USGS Water-Year Summary 2024
05585000 LA MOINE RIVER AT RIPLEY, IL
LOCATION - Lat 40°01'30.3", long 90°37'51.8" referenced to North American Datum of 1983, in SW 1/4 NE 1/4 sec.33, T.1 N., R.2 W., Brown County, IL, Hydrologic Unit 07130010, on deck of bridge on old U.S. Highway 24, 600 ft. downstream from bridge on new U.S. Highway 24 bridge, 0.2 mi. east of Ripley, 2 mi. upstream from Town Branch, and at mile 12.3.
DRAINAGE AREA - 1,293 mi².
REVISIONS HISTORY -
WSP 975: 1936. WSP 1208: 1925, 1929, 1933. WDR IL-75-1: Drainage area.
Revisions: Gage heights for the period Feb. 6, 2021, to Feb. 24, 2021, were revised on Sept. 24, 2021, based on stage values found to be in error by 0.04 ft. or more.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: March 1921 to current.
Prior to October 1931, published as Crooked Creek at Ripley.
STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
SEDIMENT: Water years 1981 and 1995-97.
CHEMICAL: Water years 1975-91.
SPECIFIC CONDUCTANCE: Water year 1979.
WATER TEMPERATURE: Water year 1979.
MISCELLANEOUS: Sediment concentration and particle size, water years 1995-97.
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: March 1921 to current.
Prior to October 1931, published as Crooked Creek at Ripley.
STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
SEDIMENT: Water years 1981 and 1995-97.
CHEMICAL: Water years 1975-91.
SPECIFIC CONDUCTANCE: Water year 1979.
WATER TEMPERATURE: Water year 1979.
MISCELLANEOUS: Sediment concentration and particle size, water years 1995-97.
GAGE - U.S. Army Corps of Engineers water-stage recorder, satellite telemeter, and crest-stage gage. Datum of gage is 430.57 ft above NAVD of 1988. Prior to July 28, 1926, nonrecording gage at site 200 ft upstream at datum 0.02 ft higher. July 28, 1926 to Jan. 11, 1935, nonrecording gage at present site and datum.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IL Water Science Center.
EXTREMES FOR PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 37,200 ft³/s, Apr. 21, 2013, gage height, 32.59 ft; no flow Sept. 26, 1989.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 7,140 mg/L, June 21, 1981; minimum daily mean, 5 mg/L, Dec. 4, 5, 1996.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 212,000 tons, May 8, 1996; minimum daily, 0.87 tons, Jan. 20, 1997.
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 37,200 ft³/s, Apr. 21, 2013, gage height, 32.59 ft; no flow Sept. 26, 1989.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 7,140 mg/L, June 21, 1981; minimum daily mean, 5 mg/L, Dec. 4, 5, 1996.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 212,000 tons, May 8, 1996; minimum daily, 0.87 tons, Jan. 20, 1997.
