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Water-Year Summary for Site 05446500

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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
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
00400 pH(Max.,Min.,Med.)  
51289 OrthoPO4, in situ(Max.,Min.,Mean)  
63680 Turbidity, Form Neph(Min.,Mean,Max.)  
63680 Turbidity, Form Neph(Min.,Max.,Mean)  
99133 NO3+NO2,water,insitu(Max.,Min.,Mean)  

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

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USGS Water-Year Summary 2018
LOCATION - Lat 41°33'22", long 90°11'07" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 sec.18, T.18 N., R.3 E., Rock Island County, IL, Hydrologic Unit 07090005, near center of span on downstream side of bridge on State Highway 92, 1.8 mi east of Joslin, 14.5 mi downstream from Rock Creek, and at mile 26.9.
DRAINAGE AREA - 9,549 mi².
REVISIONS HISTORY - WDR IL-79-1: Drainage area.
  DISCHARGE: October 1939 to current.
  STAGE: Water years 1994 to current.
  CHEMICAL: Water years 1975-94 and 2009 to 2011.
  SEDIMENT: May 1980 to September 1982.
  SPECIFIC CONDUCTANCE: Water years 1976-81 and June 2015 to current.
  WATER TEMPERATURE: Water years 1976-81 and June 2015 to current.
  DISSOLVED OXYGEN: June 2015 to current.
  PH: June 2015 to current.
  TURBIDITY: June 2015 to current.
  NITRATE: June 2015 to current.
  PHOSPHATE: June 2015 to current.
GAGE - Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, water quality monitor, and crest-stage gage. Datum of gage is 564.06 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers) (563.85 ft NAVD 1988). Prior to Apr. 6, 1940, nonrecording gage at same site and datum.
REMARKS - Some diurnal fluctuation caused by powerplants upstream from station. Accuracy of records is discussed in the annual Station Analysis archived at the USGS IL Water Science Center.
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 47,700 ft³/s, June 7, 2002, gage height, 19.24 ft., minimum daily discharge, 834 ft³/s, Jan. 3, 1940, estimated due to backwater from ice.
SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily mean, 1,210 mg/L June 14, 1981; minimum daily mean, 17 mg/L Feb. 9, 1981.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 48,000 tons Apr. 5, 1982; minimum daily, 131 tons Feb. 9, 1981.
WATER-TEMPERATURE: Maximum, 29.6 oC, July 26-28, 2016; minimum, equal to or less than -0.1 oC, several days in most years.
SPECIFIC CONDUCTANCE: Maximum, 889 uS/cm, Feb. 02, 2016; minimum, 358 uS/cm, Aug. 7, 2015.
DISSOLVED OXYGEN: Maximum, 19.4 mg/L, Aug. 23, 2015; minimum, 4.8 mg/L, July 24, 2017.
pH: Maximum, 9.2 units, Aug. 24, 2015; minimum, 7.5 units, July 23, 2017.
TURBIDITY(YSI): Maximum, 480 FNU, Sept. 19, 2015; minimum, 1.4 FNU, Oct. 27, 2015.
TURBIDITY(HACH): Maximum, 760 FNU, May 12, 2016; minimum, -0.1 FNU, Jan. 9-10, 2017.
NITRATE: Maximum, 13.5 mg/L, July 22, 2017; minimum, 1.3 mg/L, Aug. 26, 2015.
PHOSPHATE: Maximum, 0.236 mg/L, June 24, 2015; minimum, 0.001 mg/L, Aug. 19, 2016.