USGS Water-Year Summary for Site 05592000

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	Available Parameters
	00060 Discharge(Mean)
	00065 Gage height(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

05592000 KASKASKIA RIVER AT SHELBYVILLE, IL

LOCATION - Lat 39°24'25.3", long 88°46'51.6" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 sec.8, T.11 N., R.4 E., Shelby County, IL, Hydrologic Unit 07140201, on left bank 700 ft downstream from Lake Shelbyville Dam, 700 ft upstream from bridge on State Highway 16 in Shelbyville, 0.5 mi upstream from railroad bridge, 7 mi upstream from Robinson Creek, and at mile 197.5.

DRAINAGE AREA - 1,054 mi².

REVISIONS HISTORY - WSP 975: 1908. WDR IL-75-1: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
  DISCHARGE: February 1908 to September 1912, November to December 1912, August
    to December 1914, October 1940 to current.
  STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
  CHEMICAL: Water years 1978-91.

GAGE - Water-stage recorder and U.S. Army Corps of Engineers satellite telemeter. Datum of gage is 529.78 ft above NAVD of 1988. Prior to Dec. 6, 1914, nonrecording gage at site 750 ft downstream at datum 1.11 ft higher. Oct. 1 to Dec. 3, 1940, and June 1, 1950, to July 10, 1952, nonrecording gage and Dec. 4, 1940, to May 31, 1950, and July 11, 1952, to June 30, 1969, water-stage recorder, at site 650 ft downstream at datum 5.78 ft higher. June 30, 1969, to Sept. 30, 1998, water-stage recorder, at present site, at datum 5.78 ft higher.

REMARKS - Flow regulated by Lake Shelbyville (station 05591950), flood-control storage 474,000 acre-ft, beginning June 24, 1969. 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: Prior to Lake Shelbyville dam (June 24, 1969): Maximum discharge, 25,900 ft³/s, June 29, 1957, gage height, 28.15 ft, present datum and site then in use; no flow at times in 1953-55. Since Lake Shelbyville dam: Maximum discharge, 5,580 ft³/s, Mar. 22, 1998, gage height, 18.77 ft, present datum, maximum gage height, 18.94 ft, Mar. 20, 1982, discharge, 5,090 ft³/s; minimum, no flow Oct. 2-3, 1984.