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Water-Year Summary for Site 05528100

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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.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Mean)  

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

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USGS Water-Year Summary 2020
LOCATION - Lat 42°12'02", long 87°55'07" referenced to North American Datum of 1983, in NW 1/4 SE 1/4 SW 1/4 sec.14, T.43 N., R.11 E., Lake County, IL, Hydrologic Unit 07120004, on center of the downstream side of the Illinois Route 22 (Half Day Road) bridge, and at mile 80.
DRAINAGE AREA - 273 mi².
REVISIONS HISTORY - WRD IL-75-1: Drainage area.
  DISCHARGE: June 2009 to current.
  STAGE: Water years 2009 to current.
  PARTIAL RECORD: Annual maximum gage height, water years 1962-76
    (published as "at Halfday"); miscellaneous discharge measurements, water year 1976.
REVISED RECORDS - WRD IL-75-1: Drainage area.
GAGE - Water-stage recorder and satellite telemeter. Datum of gage is 629.97 ft above NAVD 1988. From August 1961 to April 1976, nonrecording gage at same site and at datum 640.45 ft. NGVD 1929. Prior to June 2009, published as "Des Plaines River at Halfday".
REMARKS - 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, 3,710 ft.3/s, July 13, 2017, gage height, 16.55 ft; estimated minimum, 25 ft.3/s, September 28, 2013.