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Water-Year Summary for Site 05595000

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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.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
00400 pH(Med.,Max.,Min.)  
51289 OrthoPO4, in situ(Max.,Min.,Mean)  
63680 Turbidity, Form Neph(Mean,Min.,Max.)  
63680 Turbidity, Form Neph(Min.,Max.,Mean)  
91049 NO3+NO2, wu(Mean)  
99133 NO3+NO2,water,insitu(Max.,Min.,Mean)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
05595000 KASKASKIA RIVER AT NEW ATHENS, IL
LOCATION - Lat 38°19'11", long 89°53'19" referenced to North American Datum of 1983, in SE 1/4 NW 1/4 NW 1/4 sec.33, T.2 S., R.7 W., St. Clair County, IL, Hydrologic Unit 07140204, on right downstream side of bridge on battery cell at State Highway 13 at New Athens, 1.4 mi downstream from Silver Creek and at mile 28.4.
DRAINAGE AREA - 5,189 mi². previously published as about 5,220 mi².
REVISIONS HISTORY - WSP 805: 1935, WSP 1208: 1910-11, 1920. WSP 1508: 1912, 1915-16, 1919, 1921.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
  DISCHARGE: October 1909 to December 1912, June 1914 to September 1921, January 1934
    to September 1971. April 2009 to current. Monthly discharge only for some
    periods, published in WSP 1308. Records for January 1907 to September 1909,
    published in WSP 265, have been found to be unreliable and should not be used.
  STAGE: October 1971 to September 1974, April 2009 to current.
SURFACE-WATER QUALITY
  SPECIFIC CONDUCTANCE: Sept. 2015 to current.
  WATER TEMPERATURE: Sept. 2015 to current.
  DISSOLVED OXYGEN: Sept. 2015 to current.
  PH: Sept. 2015 to current.
  TURBIDITY: Sept. 2015 to current.
  NITRATE: Sept. 2015 to current.
PHOSPHATE: Sept. 2015 to current.
GAGE - Water-stage recorder, satellite telemeter, water-quality monitor, and acoustic velocity meter. Datum of gage is 300.00 ft above NGVD of 1929 (299.54 ft NAVD 1988). Oct. 1, 1909, to Dec. 31, 1912, and June 22, 1914, to Sept. 30, 1921, nonrecording gage at site 1.0 mi upstream at datum 359.50 ft. above NGVD of 1929. Jan. 18, 1935, to May 24, 1967, water-stage recorder at site 0.4 mi upstream at datum 359.50 ft. above NGVD of 1929. May 25, 1967, to May 18, 1970, nonrecording gage at site 0.9 mi upstream and at datum 359.50 ft. above NGVD of 1929. May 19, 1970, to Sept. 30, 1974, water-stage recorder 0.9 mi upstream and at datum 359.50 ft. above NGVD of 1929. Oct. 1, 1937, to Sept. 30, 1971, auxiliary nonrecording gage on Mississippi River near mouth of Kaskaskia River 41 mi downstream. A HACH Nitratax sensor for total nitrite plus nitrate nitrogen, a Hach Solitex turbidity sensor,and a YSI EXO 2 water-quality monitor with water temperature, specific conductance, pH, dissolved oxygen, and turbidity sensors, a Wetlabs Cycle Phosphorus sensor was installed.
REMARKS - Flow partially regulated since Apr. 1, 1967, by Carlyle Reservoir 65 mi above gage. Occasional regulation by navigation dam downstream at Roots. 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: Prior to Carlyle lake dam (Apr. 1, 1967): Maximum discharge, 83,000 ft³/s, May 23, 1943, gage height, 98.85 ft, backwater from Mississippi River, present datum and site then in use; minimum, 40 ft³/s, Sept. 19, 1954. Since Carlyle lake dam: Maximum discharge, 55,300 ft³/s Jan. 1, 2016, gage height, 95.17 ft; maximum gage height, 95.63 ft, Jan. 1, 2016, discharge, 49,400 ft³/s; minimum, -979 ft³/s, July 8, 2012, caused by regulation of navigation dam downstream at Roots, IL.
WATER-TEMPERATURE: Maximum, 32.6 oC, July 22, 2017; minimum, 0.0 oC, several days in most years.
SPECIFIC CONDUCTANCE: Maximum, 644 uS/cm, jan. 16, 2017; minimum, 112 uS/cm, Dec. 30 and 31, 2015.
DISSOLVED OXYGEN: Maximum, 21.4 mg/L, Feb. 27, 2017; minimum, 0.5 mg/L, Sept. 4, 2017.
pH: Maximum, 8.8 units, March 24, 2017; minimum, 6.8 units, Aug. 16-18 and Sept. 10-12, 2016.
TURBIDITY(YSI): Maximum, 521 FNU, April 30, 2017; minimum, 4.2 FNU, Oct. 28, 2015.
TURBIDITY(HACH): Maximum, 759 FNU, April 30, 2017; minimum, 4.2 FNU, Oct. 31, 2015.
NITRATE: Maximum, 5.3 mg/L, Feb. 24, 2016; minimum, 0.0 mg/L, many days in most years.
PHOSPHATE: Maximum, 0.617 mg-P/L, Nov. 6, 2016; minimum 0.008 mg-P/L, Feb. 26, 2017.