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Water-Year Summary for Site 05558300

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

Water year 2019: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2019
05558300 ILLINOIS RIVER AT HENRY, IL
LOCATION - Lat 41°06'26", long 89°21'22" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 NE 1/4 sec.16, T.13 N., R.10 E., Marshall County, IL, Hydrologic Unit 07130001, on right bank at grain elevator, 1100 ft downstream from State Highway 18 bridge, 4.1 mi upstream from Crow Creek, 37.9 mi upstream from Peoria Lock and Dam, and at mile 195.7.
DRAINAGE AREA - 13,544 mi². does not include diversion from Lake Michigan through the Chicago Sanitary and Ship Canal, which has occurred since Jan. 17, 1900.
SURFACE-WATER RECORDS
PERIOD OF RECORD -

SURFACE-WATER DISCHARGE AND STAGE
  DISCHARGE: October 1981 to current. Prior to October 1983, published as station number
    "05558900."
  STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
  SEDIMENT: October 1983 to September 1986, May 1993 to September 1993.
  MISCELLANEOUS: Contaminants in streambed sediments, October 1996; contaminants in fish
    tissue, October 1996.

WATER TEMPERATURE: June 6, 2018 - present.

SPECIFIC CONDUCTANCE: June 6, 2018 - present.

PH: June 6, 2018 - present.

DISSOLVED OXYGEN: June 6, 2018 - present.

CHLOROPHYLL-A: June 6, 2018 - present.

BLUE-GREEN ALGAE: June 6, 2018 - present.

GAGE - U.S. Army Corps of Engineer's water-stage recorder and satellite telemeter, acoustic-velocity meter, and a crest-stage gage. Datum of gage is 425.88 ft above NGVD of 1929 (425.65 ft NAVD 1988). Prior to October 12, 2007, at site 1900 feet upstream at same datum.
REMARKS - Some regulation by locks and dams upstream from station at Starved Rock and downstream at Peoria. Accuracy of records is discussed in the annual Station Analysis archived at the USGS IL Water Science Center.
EXTREMES OUTSIDE PERIOD OF RECORD - SURFACE-WATER DISCHARGE AND STAGE: Flood of Mar. 22, 1979, reached a stage of 32.67 ft, discharge about 140,000 ft³/s, based on rating curve extended above 32.20 ft, from information obtained from the U.S. Army Corps of Engineers.
EXTREMES FOR PERIOD OF RECORD -

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 161,000 ft³/s, April 20, 2013, gage height 30.86 ft; maximum gage height 32.94 ft, April 22, 2013, discharge unknown; minimum daily discharge, 1,050 ft³/s, March 3, 2015.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 324 mg/L, June 11, 1993; minimum daily mean, 19 mg/L, May 2, 1993.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 52,800 tons, June 11, 1993; minimum daily, 1,600 tons, June 2, 1993.

WATER TEMPERATURE: maximum, 30.68 oC, July 16, 2018; minimum, 2.84 oC, Nov. 13, 2018.

SPECIFIC CONDUCTANCE: maximum, 884 uS/cm, Aug. 16, 2018; minimum, 361 uS/cm, Sept. 30, 2019.

PH: maximum, 8.66, Aug. 1, 2018; minimum, 7.47 , Oct. 07, 2019.

DISSOLVED OXYGEN: maximum, 13.76 mg/L, April 16, 2019; minimum, 1.77 mg/L, Aug. 13, 2019.

CHLOROPHYLL-A: maximum, 83.29 ug/L, Aug. 02, 2019; minimum, 4.51 ug/L; June 04, 2019.