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USGS Water-Year Summary 2024
03339000 VERMILION RIVER NEAR DANVILLE, IL
LOCATION - Lat 40°06'03.9", long 87°35'51.4" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 sec.22, T.19 N., R.11 W., Vermilion County, IL, Hydrologic Unit 05120109, on right bank at Danville sewage-treatment plant, 1.7 miles upstream from Stony Creek, 2.2 miles southeast of Danville, and at mile 19.5
DRAINAGE AREA - 1,290 mi².
REVISIONS HISTORY - WSP 853: 1936(M). WSP 973: 1939. WSP 1305: 1915-16, 1920, 1929. WSP
1335: 1934(m). WSP 1909: 1960. WDR IL-75-1: Drainage area. WDR
IL-84-1: 1983. WDR IL-92-1: 1991.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: October 1914 to September 1921, June 1928 to current.
Monthly discharge only for some periods, published in WSP 1305.
STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
CHEMICAL: Water years 1978-91.
SEDIMENT: Water years 2011-12.
WATER TEMPERATURE: Water years 2001-2003. December 2014 to current.
SPECIFIC CONDUCTANCE: Water years 2001-2003. December 2014 to current.
DISSOLVED OXYGEN: Water years 2001-2003. December 2014 to current.
PH: Water years 2001-2003. December 2014 to current.
TURBIDITY: Water years 2001-2003. December 2014 to current.
NITRATE: December 2014 to current.
PHOSPHORUS: December 2014 to current.
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: October 1914 to September 1921, June 1928 to current.
Monthly discharge only for some periods, published in WSP 1305.
STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
CHEMICAL: Water years 1978-91.
SEDIMENT: Water years 2011-12.
WATER TEMPERATURE: Water years 2001-2003. December 2014 to current.
SPECIFIC CONDUCTANCE: Water years 2001-2003. December 2014 to current.
DISSOLVED OXYGEN: Water years 2001-2003. December 2014 to current.
PH: Water years 2001-2003. December 2014 to current.
TURBIDITY: Water years 2001-2003. December 2014 to current.
NITRATE: December 2014 to current.
PHOSPHORUS: December 2014 to current.
GAGE - Water-stage recorder, satellite telemeter, water-quality monitor, and crest-stage gage.
Datum of gage is 503.72 ft above NAVD of 1988 from Aug. 30, 1982, to present. However, datum incorrectly published as 503.33 ft above NGVD of 1929 from Aug. 30, 1982 to Sept. 30, 2001.
Prior to Jan. 9, 1935, nonrecording gage at same site and datum 503.33 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers) (503.18 ft NAVD 1988). However, datum incorrectly published as 503.99 ft above NGVD of 1929 from 1928 to 1943.
Jan. 9, 1935, to Aug. 30, 1982, at site 0.3 mi downstream and datum 503.33 ft above NGVD of 1929 (503.18 ft NAVD 1988).
REMARKS - Effluent from sewage-treatment plant 0.5 downstream from gage is included in discharge records. Flow regulated at times by storage at Lake Vermilion on North Fork Vermilion River, 4.5 mi upstream from station, usable capacity, 7,440 acre-ft, and by Danville sewage-treatment plant.
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, 48,700 ft³/s, Mar. 13, 1939, gage height, 28.59 ft; maximum gage height, 31.56 ft, Apr. 13, 1994, discharge 47,900 ft³/s, minimum daily, 2.0 ft³/s, Oct. 9-14, 1920 and Aug. 10, 1930.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 1,010 mg/L, Jan. 18, 2012; minimum daily, 8 mg/L, many days during 2012.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 38,900 tons, Apr. 28, 2011; minimum daily, 1.0 tons, Aug. 4, 2012.
WATER TEMPERATURE: Maximum, 32.2oC, Aug. 11, 2016; minimum, -0.1 oC, many days during 2015.
SPECIFIC CONDUCTANCE: Maximum, 901 uS/cm at 25oC, January 16, 2015; minimum, 283 uS/cm at 25oC, Oct. 12, 2017.
DISSOLVED OXYGEN: Maximum, 20.9 mg/L, Aug. 11, 2016; minimum, 4.3 mg/L, Aug. 11, 2016.
PH: Maximum, 8.9 standard units, many days; minimum, 7.5 standard units, June 9, 2015.
TURBIDITY: Maximum, 1,300 FNU, July 18, 2016; minimum, 0.0 FNU, July 10, 2017.
NITRATE: Maximum, 25.1 mg/L, May 29, 2017; minimum, 0.42 mg/L, Oct. 12, 2017.
PHOSPHATE: Maximum, 0.607 mg/L, February 9, 2015; minimum, 0.001 mg/L, December 30, 2014.
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 48,700 ft³/s, Mar. 13, 1939, gage height, 28.59 ft; maximum gage height, 31.56 ft, Apr. 13, 1994, discharge 47,900 ft³/s, minimum daily, 2.0 ft³/s, Oct. 9-14, 1920 and Aug. 10, 1930.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 1,010 mg/L, Jan. 18, 2012; minimum daily, 8 mg/L, many days during 2012.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 38,900 tons, Apr. 28, 2011; minimum daily, 1.0 tons, Aug. 4, 2012.
WATER TEMPERATURE: Maximum, 32.2oC, Aug. 11, 2016; minimum, -0.1 oC, many days during 2015.
SPECIFIC CONDUCTANCE: Maximum, 901 uS/cm at 25oC, January 16, 2015; minimum, 283 uS/cm at 25oC, Oct. 12, 2017.
DISSOLVED OXYGEN: Maximum, 20.9 mg/L, Aug. 11, 2016; minimum, 4.3 mg/L, Aug. 11, 2016.
PH: Maximum, 8.9 standard units, many days; minimum, 7.5 standard units, June 9, 2015.
TURBIDITY: Maximum, 1,300 FNU, July 18, 2016; minimum, 0.0 FNU, July 10, 2017.
NITRATE: Maximum, 25.1 mg/L, May 29, 2017; minimum, 0.42 mg/L, Oct. 12, 2017.
PHOSPHATE: Maximum, 0.607 mg/L, February 9, 2015; minimum, 0.001 mg/L, December 30, 2014.
