USGS Water-Year Summary for Site 01611500

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean,Med.)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean,Med.)
	00300 Dissolved oxygen(Max.,Min.,Mean,Med.)
	00400 pH(Max.,Min.,Med.)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

01611500 CACAPON RIVER NEAR GREAT CACAPON, WV

LOCATION - Lat 39°34'56", long 78°18'36" referenced to North American Datum of 1927, Morgan County, WV, Hydrologic Unit 02070003, on left bank at Rock Ford, 3.0 mi southwest of Great Cacapon, and at mile 6.1.

DRAINAGE AREA - 675 mi².

REVISIONS HISTORY - WSP 800: 1924(M). WSP 921: Drainage area. WSP 951: 1936-37. WSP 1552: 1925-26(M), 1928-1929(M), 1932. WDR WV-97-1: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - December 1922 to September 1995 and October 1996 to current year.

GAGE - Water-stage recorder. Datum of gage is 456.46 ft above NAVD of 1988. Prior to Nov. 10, 1933, non-recording gage at same site and datum.

REMARKS - Maximum discharge, 87,600 ft³/s, from rating curve extended above 52,000 ft³/s, highest since 1889.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of May 1889 reached a stage of about 24.7 ft, from floodmarks, discharge, 57,500 ft³/s.

WATER-QUALITY RECORDS

PERIOD OF RECORD - June 2005 to current year.

PERIOD OF DAILY RECORD -
DISSOLVED OXYGEN: April 2007 to current year.
pH: April 2007 to current year.
SPECIFIC CONDUCTANCE: April 2007 to current year.
TURBIDITY: October 2011 to January 2012.
WATER TEMPERATURE: April 2007 to current year.

COOPERATION - The continuous water-quality monitor at this site is maintained in cooperation with West Virginia Department of Environmental Protection, Division of Water and Waste Management. Discrete water-quality samples are collected at this site as part of the Chesapeake Bay Program's Non-Tidal Monitoring Network in cooperation with the West Virginia Department of Environmental Protection, Division of Water and Waste Management.

INSTRUMENTATION - Water-quality monitor April 2007 to current year.

EXTREMES FOR PERIOD OF DAILY RECORD -
Instantaneous Values:
DISSOLVED OXYGEN: Maximum, 16.8, mg/L, Aug. 28, 2015; minimum, 2.0 mg/L, Oct. 08, 2017.
pH: Maximum, 9.6 standard units, Sept. 7, 2012; minimum, 6.3 standard units, Aug. 21, 2012.
SPECIFIC CONDUCTANCE: Maximum, 259 µS/cm, Jan. 8, 2018; minimum, 53 µS/cm, June 4, 2018.
TURBIDITY: Maximum, 260 FNU, Dec. 8, 2011; minimum, 0.1 FNU, Oct. 22, 2011.
WATER TEMPERATURE: Maximum, 32.8°C, July 20, 2020; minimum, -0.2°C, on Jan. 30, 2019.