USGS Water-Year Summary 2021
03077500 YOUGHIOGHENY RIVER AT YOUGHIOGHENY RIVER DAM, PA
LOCATION - Lat 39°48'19", long 79°21'52" referenced to North American Datum of 1927, Somerset County, PA, Hydrologic Unit 05020006, on right bank 800 ft upstream from bridge on State Highway 281, 0.2 mi downstream from Youghiogheny River Dam, 0.2 mi south of Confluence, 0.7 mi upstream from Casselman River, and at river mile 73.7.
DRAINAGE AREA - 436 mi².
- Water Temperature Record: March 3, 2020 (10:15-11:15); monitor was out of water.
PERIOD OF RECORD - September 1904 to September 1913 (gage heights only), October 1939 to September 1991, 2005 -2008 (discharge measurements only),2009 to current year. Monthly discharge only for October 1939 to April 1940, published in WSP 1305. Figures of daily discharge prior to January 1911, published in WSP 169, 205, 243, 263, and 283 are unreliable and should not be used. September 1904 to September 1922 (gage heights only) in reports of Water Supply Commission of Pennsylvania or Pennsylvania Department of Forests and Waters. Published as "at Confluence" 1904-1922.
GAGE - Water-stage recorder and acoustic Doppler velocity meter (installed Oct 2011). Datum of gage is 1,310.17 ft above National Geodetic Vertical Datum of 1929 (U.S. Army Corps of Engineers benchmark). Satellite telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers, Pittsburgh District.
PERIOD OF RECORD - 2002 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: August 2005 to September 2006; October 2007 to current year.
SPECIFIC CONDUCTANCE: August 2005 to September 2006.
pH: August 2005 to September 2006.
DISSOLVED OXYGEN: August 2005 to September 2006.
COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Corps of Engineers, Pittsburgh District. Water-quality samples were collected as part of the Pennsylvania Department of Environmental Protection Water-Quality Network (WQN) with cooperation from the Pennsylvania Department of Environmental Protection.
INSTRUMENTATION - Water temperature sensor interfaced with a data collection platform with 60-minute recording interval.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 25.8°C, Oct 12, 2016; minimum, 1.2°C, March 10, 2015.