USGS Water-Year Summary for Site 01608500

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)
	63680 Turbidity, Form Neph(Mean,Min.,Max.,Med.)
	63680 Turbidity, Form Neph(Min.,Max.) [(2)]

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

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USGS Water-Year Summary 2020

01608500 SOUTH BRANCH POTOMAC RIVER NEAR SPRINGFIELD, WV

LOCATION - Lat 39°26'49", long 78°39'16" referenced to North American Datum of 1927, Hampshire County, WV, Hydrologic Unit 02070001, on left bank at highway bridge, 2.0 mi east of Springfield, and at mile 13.5.

DRAINAGE AREA - 1,461 mi².

REVISIONS HISTORY - WSP 1552: 1903-06, 1929-30(M), 1932-33(M), 1935(M), 1937-40(M), 1942-43(M), 1945(M). WDR WV-97-1: Drainage area. WDR-US-2006: Drainage area. WDR-US-2008: 1901(M).

SURFACE-WATER RECORDS

PERIOD OF RECORD - June 1894 to February 1896 (fragmentary), July 1899 to December 1901, August 1903 to June 1906, and August 1928 to current year.

GAGE - Water-stage recorder. Datum of gage is 561.41 ft NAVD of 1988. June 1894 to February 1896, nonrecording gage at Baltimore & Ohio Railroad bridge 11.2 mi upstream at different datum. July 1, 1899, to Dec. 31, 1901, nonrecording gage at bridge 10.0 mi upstream at different datum. Aug. 28, 1903, to June 30, 1906, nonrecording gage at present site at different datum. Aug. 8 to Sept. 24, 1928, nonrecording gage at present site and datum.

REMARKS - Maximum discharge, 240,000 ft³/s, from rating curve extended above 145,000 ft³/s on basis of slope-area measurement of peak flow, highest since 1878.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood in November 1877 reached a stage of about 34 ft, from floodmarks, at site and datum in use July 1, 1889, to Dec. 31, 1901, discharge, 140,000 ft³/s.

WATER-QUALITY RECORDS

PERIOD OF RECORD - June 2005 to current year.

PERIOD OF DAILY RECORD -
DISSOLVED OXYGEN: October 2005 to current year.
pH: October 2005 to current year.
SPECIFIC CONDUCTANCE: October 2005 to current year.
TURBIDITY: December 2005 to current year.
WATER TEMPERATURE: October 2005 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 October 2005 to current year.

EXTREMES FOR PERIOD OF DAILY RECORD -
Instantaneous Values:
DISSOLVED OXYGEN: Maximum recorded, 18.8 mg/L, Jan. 24, 2011; minimum recorded, 5.1 mg/L, July 11, 2010.
pH: Maximum recorded, 9.8 standard units, Sept. 25, 2008; minimum recorded, 6.0 standard units, May 18, 2011.
SPECIFIC CONDUCTANCE: Maximum recorded, 329 microsiemens/cm, Sept. 27, 2014; minimum recorded, 105 microsiemens/cm, Jan. 26, 2010.
TURBIDITY: Maximum recorded, 1,840 FNU, May 23, 2011; minimum recorded, <0.1 FNU, many days.
WATER TEMPERATURE: Maximum recorded, 33.6°C, July 7, 2012; minimum recorded, -0.2°C, January 23, 2020.