USGS Water-Year Summary for Site 05552500

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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

05552500 FOX RIVER AT DAYTON, IL

LOCATION - Lat 41°23'02.9", long 88°47'20.3" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 SE 1/4 sec.29, T.34 N., R.4 E., LaSalle County, IL, Hydrologic Unit 07120007, on left bank under County Highway 18 bridge in Dayton, and at mile 5.2.

DRAINAGE AREA - 2,642 mi².

REVISIONS HISTORY -

WSP 730: 1931. WSP 1208: 1930, 1935, 1939. WSP 1308: 1916(M), 1922(M), 1926-31(M), 1934-40(M), 1946-47(M). WDR IL-75-1: Drainage area. WDR IL-76-1: 1969. WDR-US-2011: 2007 (Sediment).

Discharge for Jan. 23, 2017, was revised on May 7, 2020, due to a database error.

SURFACE-WATER RECORDS

PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
  DISCHARGE:November 1914 to current. Prior to April 1925, published as
    "at Wedron." Monthly discharge only for some periods, published in WSP
    1308.
  STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
  CHEMICAL: Water years 1978-92 and 1996.
  SEDIMENT: February 2003 to September 2009.
  MISCELLANEOUS: Sediment concentration and particle size, water years 1996-97, 2003-
    2005.
BIOLOGICAL
  ALGAE: Water years 1990, 1996.

GAGE - Water-stage recorder, satellite telemeter, and crest-stage gage. Datum of gage is 462.19 ft above North American Vertical Datum of 1988. Prior to Apr. 13, 1925, nonrecording gage at site 4.1 mi upstream at datum 496.80 ft above Memphis datum. Apr. 13, 1925, to Sept. 30, 1942, nonrecording gage at site 1,000 ft upstream at datum 7.70 ft below NGVD of 1929 (7.89 ft below NAVD 1988). Oct. 1, 1942, to Apr. 10, 1951, nonrecording gage, and Apr. 11, 1951, to Sept. 30, 1978, water-stage recorder, at site 1,000 ft upstream at same datum. Oct. 1, 1978 to June 11, 1997, water-stage recorder at site 500 ft upstream at same datum.

REMARKS - Regulation by hydropower plant upstream from gage. 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, 55,400 ft³/s, July 19, 1996, gage height, 24.47 ft, from rating curve extended above 43,000 ft³/s, affected by dam failure 500 ft upstream from gage then in use; maximum gage height, 36.47 ft, Jan. 25, 1960, ice jam; minimum daily discharge, 1.0 ft³/s, Aug. 29, 1934, when turbines were shut down; lowest daily mean with plant operating, 78 ft³/s, Oct. 29, 1956.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 4,500 mg/L, Aug. 26, 2007; minimum daily, 4 mg/L, Feb. 18-20, 2003.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 320,000 tons, Aug. 24, 2007; minimum daily, 2.6 tons, Feb. 18, 2003.