Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

* We've detected you're using a mobile device. Find our Next Generation Station Page here.
Click to hideNews Bulletins

Water-Year Summary for Site 05443000

Click to hide state-specific text

Click to hide Water-Year Summary instructions and information
  • 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 2022: 2021-10-01 to 2022-09-30
 
Print this page
USGS Water-Year Summary 2022
05443000 ROCK RIVER ABOVE SINNISSIPPI DAM AT ROCK FALLS, IL
LOCATION - Lat 41°47'15", long 89°40'35" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 SE 1/4 sec.22, T.21 N., R.7 E., Whiteside County, IL, Hydrologic Unit 07090005, on concrete wall at mouth of Hennepin Feeder Canal, 300 ft upstream of the Upper Rock Falls Dam, and at mile 73.6.
DRAINAGE AREA - 8,740 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
  STAGE: October 2003 to current.
GAGE - Water-stage recorder and cell radio telemeter. Datum of Gage is 630.00 ft above NGVD of 1929, based on elevation provided by Illinois Department of Natural Resources (629.80 ft NAVD 1988).
REMARKS - Stage at this location can be affected by the Upper Rock Falls dam and the Rock Falls Hydroelectric plant, located approximately 300 ft downstream from the gage. This reach is also regulated by the Dixon Hydroelectric Plant, located approximately 13 mi upstream.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 7.85 ft, October 24, 2008; minimum 0.75 ft, observed, due to dam repair September 28 - October 1, 2010, as provided by Illinois Department of Natural Resources.