USGS Water-Year Summary 2020
05568500 ILLINOIS RIVER AT KINGSTON MINES, IL
LOCATION - Lat 40°33'11", long 89°46'38" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 sec.26, T.7 N., R.6 E., Peoria County, IL, Hydrologic Unit 07130003, on right bank at Kingston Mines, 2.3 mi. downstream from Mackinaw River and at mile 145.4. Auxiliary gage (05568615) 8.6 miles downstream.
DRAINAGE AREA - 15,818 mi². does not include diversion from Lake Michigan through the Chicago Sanitary and Ship Canal, which has occurred since Jan. 17, 1900.
- WSP 1558: 1957. WDR IL-75-1: Drainage area. WDR IL-05: 2004.
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: October 1939 to current.
STAGE: Water years 1994 to current.
DISSOLVED OXYGEN: May, 2004 to May, 2005.
PH: May, 2004 to May, 2005.
SPECIFIC CONDUCTANCE: May, 2004 to May, 2005.
WATER TEMPERATURE: Water years 1975-77, May, 2004 to May, 2005.
MISCELLANEOUS: Contaminants in streambed sediments, October 1996; contaminants in fish
tissue, October 1996.
GAGE - U.S. Army Corps of Engineers water-stage recorder, satellite telemeter, acoustic-velocity meter, and crest-stage gage. Auxiliary U.S. Army Corps of Engineers water-stage recorder and satellite telemeter at site 8.6 mi downstream. Datum of gage is 428.00 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers) (427.66 ft NAVD 1988). Prior to Oct. 1, 1940, nonrecording gage at same site at datum 1.65 ft higher. Oct. 1, 1940, to Mar. 31, 1942, nonrecording gage at present site and datum. Prior to Oct. 30, 1967 and Nov. 9, 1999 to Oct. 29, 2002, auxiliary water-stage recorder at mouth of Copperas Creek, 8.0 mi downstream.
EXTREMES FOR PERIOD OF RECORD - SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 101,000 ft³/s, estimated based on graphic reconstruction, Sept. 20, 2008, gage height, 24.68 ft; maximum gage height, 26.54 ft, April 24, 2013, discharge, 79,800 ft³/s; minimum daily discharge, 600 ft³/s, Oct. 26, 1997, estimated, caused by dam regulation.