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Water-Year Summary for Site 05437610

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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
00065 Gage height(Mean)  

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

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USGS Water-Year Summary 2023
LOCATION - Lat 42°22'07.08", long 89°03'26.14" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 SW 1/4 sec.18, T.45 N., R.2 E., Winnebago County, IL, Hydrologic Unit 07090005, at bridge on Latham Road/Ralston Road, 0.75 mi upstream from Willow Creek, 3.1 mi downstream from McDonald Creek, 9 mi upstream of Rockford (Fordham) Dam, and at mile 146.1.
DRAINAGE AREA - 6,476 mi².
REVISIONS HISTORY - Revisions: Datum of gage is 698.74 ft NAVD88 as determined by levels from U.S. Coastal & Geodetic Survey Benchmark. Water years 2002 to 2019, datum incorrectly published as 700.00 ft above NGVD of 1929 (699.81 ft NAVD 1988). 
  STAGE: July 2002 to current.
  PARTIAL RECORD: Miscellaneous discharge measurements, water years 1927 and 2003 to
GAGE - Water-stage recorder and phone telemeter. Datum of gage is 698.74 ft above NAVD of 1988.
REMARKS - Stages regulated by power plant 10.3 mi. upstream of gage and by the operation of Fordham Dam 9.5 mi. downstream of gage.
EXTREMES FOR PERIOD OF RECORD - STAGE: Maximum gage height, 14.46 ft, March 17 and 18, 2019, minimum, 2.75 ft, July 13, 2005.