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Water-Year Summary for Site 05447500

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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean) [Discontinued 10/20/21]  
00300 Dissolved oxygen(Max.,Min.,Mean) [Discontinued 10/20/21]  
00400 pH(Max.,Min.,Med.) [Discontinued 10/20/21]  
51289 OrthoPO4, in situ(Max.,Min.,Mean)  
63680 Turbidity, Form Neph(Max.,Min.,Mean)  
63680 Turbidity, Form Neph(Mean,Max.,Min.) [Discontinued 10/20/21]  
99133 NO3+NO2,water,insitu(Max.,Min.,Mean)  

Water year 2024: 2024-10-01 to 2025-09-30
 
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USGS Water-Year Summary 2024
05447500 GREEN RIVER NEAR GENESEO, IL
LOCATION - Lat 41°29'20.16", long 90°92'8.83" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 sec.4, T.17 N., R.3 E., Henry County, IL, Hydrologic Unit 07090007, on upstream side of bridge on State Highway 82, 1.4 mi upstream from Geneseo Creek, 2.4 mi north of Geneseo, and at mile 14.9.
DRAINAGE AREA - 1,003 mi².
REVISIONS HISTORY -

WSP 875: 1938. WSP 1508: 1937, 1939-41(M), 1946(P), 1947-49. WDR IL-74-1: Drainage area.

SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
  DISCHARGE: March 1936 to current.
  STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
  CHEMICAL: Water years 1978-91 and 2009-2011.
  WATER TEMPERATURE: June 2015 to Sept. 2018.
  SPECIFIC CONDUCTANCE: 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.
  SEDIMENT: March 1978 to September 1981.
  PHOSPHATE: August 2015 to Aug. 2016.
GAGE -

Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and water-quality monitor.

Datum of gage is 577.68 ft. above NAVD of 1988.

Prior to Oct. 1, 1939, nonrecording gage at present site at datum 27.00 ft. lower.

Oct. 1, 1939 to Apr. 3, 1940, nonrecording gage at present site at datum 3.0 ft. higher.

Apr. 3, 1940 to Sept. 30, 1997, recording gage at present site at datum 3.0 ft. higher.

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, 12,100 ft³/s, June 22, 1974, gage height, 19.75 ft, present datum; maximum gage height, 21.59 ft, present datum, Jan. 23, 1969, ice jam, estimated discharge, 8,000 ft³/s; minimum daily discharge, 22 ft³/s, Jan. 18, 1977.
SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily mean, 8,620 mg/L Apr. 14, 1981; minimum daily mean, 17 mg/L Jan. 15, 16, 1979.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 132,000 tons, Apr. 14, 1981; minimum daily, 7.3 tons, Jan. 15, 16, 1979.
WATER-TEMPERATURE: Maximum, 28.9 oC, July 13, 2018; minimum, < -0.1oC, multiple days.
SPECIFIC CONDUCTANCE: Maximum, 935 uS/cm, Aug. 20, 2016; minimum, 231 uS/cm, Jan. 17, 2017.
DISSOLVED OXYGEN: Maximum, 16.2 mg/L, Aug. 9, 2016; minimum, 2.6 mg/L, Oct. 15, 2017.
PH: Maximum, 8.7 units, Aug. 27, 2018; minimum, 7.2 units, Oct. 15, 2017.
TURBIDITY(YSI): Maximum, 1290 FNU, June 10, 2018; minimum, 1.1 FNU, Dec. 5, 2016, Oct. 15, 2017.
TURBIDITY(HACH): Maximum, 3203 FNU, April 6, 2023; minimum, 0.45 FNU, Mar. 23, 2017.
NITRATE: Maximum, 15.2 mg/L, March 31, 2018; minimum, 0.3 mg/L, August 25, 2023.
PHOSPHATE: Maximum phosphate, 0.356 mg/L, Aug. 16, 2016; minimum, 0.003 mg/L, Jun. 24, 2016.