USGS Water-Year Summary 2020
03049680 ALLEGHENY RIVER AT LOCK AND DAM 2 AT ASPINWALL, PA
LOCATION - Lat 40°29'15", long 79°54'54" referenced to North American Datum of 1983, Allegheny County, PA, Hydrologic Unit 05010009, on left bank land wall of lock # 2, 0.34 miles upstream of entrance to Pittsburgh Zoo, 0.02 miles downstream of the Highland Park bridge and 0.53 miles NW of Highland Park.
DRAINAGE AREA - 11,700 mi².
PERIOD OF RECORD - August 2010 to current year
GAGE - Water stage recorder. Station maintained for stage readings only. Datum of gage is 712.0 ft above National Geodetic Vertical Datum of 1929.
COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers, Pittsburgh District.