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Water-Year Summary for Site 05466000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2018: 2017-10-01 to 2018-09-30

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USGS Water-Year Summary 2018
LOCATION - Lat 41°16'19", long 90°22'39" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.21, T.15 N., R.1 E., Henry County, IL, Hydrologic Unit 07080104, on left bank at downstream side of bridge on U.S. Highway 150, 1.5 mi. north of Opheim, 5.5 mi. south of Orion, and at mile 51.5.
DRAINAGE AREA - 155 mi². (Revised WDR IL-75-1).
REVISIONS HISTORY - WSP 1175: 1947(P). WSP 1508: 1942. WDR IL-75-1: Drainage area.
  DISCHARGE: October 1940 to current. Monthly discharge only for some
    periods, published in WSP 1308.
  STAGE: Water years 1994 to current.
GAGE - Water-stage recorder, satellite telemeter and crest-stage gage. Datum of gage is 653.96 ft above NGVD of 1929 (U.S. Army Corps of Engineers bench mark) (653.74 ft NAVD 1988). Prior to Apr. 4, 1941, and Apr. 8 to Nov. 11, 1981, nonrecording gage at same site and datum.
REMARKS - 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 August 1924 reached a stage of 20.2 ft, from floodmarks.
EXTREMES FOR PERIOD OF RECORD - SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 8,910 ft³/s, Feb. 19, 1951, gage height, 13.41 ft, from floodmark; maximum gage height, 16.35 ft, Feb 20, 2014, ice jam, discharge 5,000 ft³/s estimated; minimum, 0.3 ft³/s, Oct. 6, 1956.