USGS Water-Year Summary 2023
03085730 Ohio River at Emsworth Dam Upper Pool @ Emsworth
LOCATION - Lat 40°30'14", long 80°05'08" referenced to North American Datum of 1983, Allegheny County, PA, Hydrologic Unit 05030101,
on right bank of Emsworth Lock and Dam land wall, 2.9 miles downstream of the Mckees Rocks Bridge, and 2.5 miles upstream of Interstate 79 bridge over the Ohio River.
DRAINAGE AREA - 19,500 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2017 to current year.
GAGE - Water stage recorder referenced to a staff gage. The datum of gage is 693.4 ft above North American Vertical Datum of 1988 (from GNSS survey). Prior to February 21, 2024 the datum of gage was reported as 694 ft above National Geodetic Vertical Datum of 1929. Satellite 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.
