USGS Water-Year Summary 2024
03062225 MONONGAHELA RIVER AT OPEKISKA LOCK & DAM (LOWER), WV
LOCATION - Lat 39°33'52", long 80°03'03" referenced to North American Datum of 1927, Monongalia County, WV, Hydrologic Unit 05020003, and at mile 115.4.
DRAINAGE AREA - 2,523 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2010 to September 2012 (annual maximum and minimum gage height), October 2012 to March 2020 (daily mean gage height). March 2020 to current year (15 minute gage height values).
GAGE - Water-stage recorder with satellite telemeter. Datum of gage is 825.3 ft above NAVD 88. Superseded datum; 826.00 ft above NGVD29.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, July 29, 2017 at 18.82 ft; minimum gage height, April 13, 2017 at 7.92 ft.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - February 2014 to current year.
INSTRUMENTATION - Electronic data logger with 15-minute record interval. Heated tipping bucket rain gage.
EXTREMES FOR PERIOD OF RECORD - Maximum daily precipitation, 3.17 in., Sept 9, 2018; minimum precipitation, 0.00 in., on many days.