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Water-Year Summary for Site 05446500

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Available Parameters
00010 Temperature, water(Min.,Max.,Mean)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  
00095 Specific cond at 25C(Max.,Mean,Min.) [Discontinued 12/18/20]  
00300 Dissolved oxygen(Mean,Max.,Min.) [Discontinued 12/18/20]  
00400 pH(Med.,Max.,Min.) [Discontinued 12/18/20]  
51289 OrthoPO4, in situ(Mean,Min.,Max.)  
63680 Turbidity, Form Neph(Min.,Mean,Max.)  
63680 Turbidity, Form Neph(Min.,Max.,Mean) [Discontinued 12/18/20]  
99133 NO3+NO2,water,insitu(Mean,Min.,Max.)  

Water year 2024: 2023-10-01 to 2024-09-30
 
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USGS Water-Year Summary 2024
05446500 ROCK RIVER NEAR JOSLIN, IL
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.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
  DISCHARGE: October 1939 to current.
  STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
  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 Sept. 2018.
  WATER TEMPERATURE: Water years 1976-81 and June 2015 to Sept. 2018.
  DISSOLVED OXYGEN: June 2015 to Sept. 2018.
  PH: June 2015 to Sept. 2018.
  TURBIDITY: June 2015 to current.
  NITRATE: June 2015 to current.
  PHOSPHATE: June 2015 to Apr. 2017.
GAGE - Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, water quality monitor, and crest-stage gage. Datum of gage is 563.74 ft. above NAVD of 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.
EXTREMES FOR PERIOD OF RECORD -
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, 349 uS/cm, June 1, 2018.
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 and Sept. 4, 2018.
TURBIDITY(YSI): Maximum, 350 FNU, Aug. 12, 2016; 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.