USGS Water-Year Summary 2024
03086001 Ohio River (lower pool) at Sewickley, PA
LOCATION - Lat 40°32'59", long 80°12'25" referenced to North American Datum of 1983, Allegheny County, PA, Hydrologic Unit 05030101, on left bank, 100 ft Downstream from Dashields Dam, 1.0 mi downstream from Narrows Run, 1.0 mi northwest of Sewickley, and 13.3 mi downstream from confluence of Allegheny and Monongahela Rivers.
DRAINAGE AREA - 19,500 mi²
REVISIONS HISTORY - Revisions: The datum of gage was erroneously reported as 670.4 ft above National Geodetic Vertical Datum prior to February 21, 2024
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2017 to current year.
GAGE - Water stage recorder with reference staff gage. Datum of gage is 669.46 ft above North American Vertical Datum of 1988 (from benchmark). Prior to February 21, 2024, the datum of gage was erroneously reported as 670.40 ft above National Geodetic Vertical Datum of 1929. Telemetry at site.
COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers, Pittsburgh District.