STATION.--03085730 OHIO RIVER AT EMSWORTH DAM UPPER POOL AT EMSWORTH, PA
LOCATION.--Lat 40`30'14", long 80`05'08", Allegheny County, Hydrologic Unit 05030101.
DRAINAGE AREA.--19,500 square miles.
PERIOD OF RECORD.--August 2011 to current year.
GAGE.--Water-stage recorder. Station maintained for stage readings only. 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 694.0 ft above National Geodetic Vertical Datum of 1929.
COOPERATION.--Funding for the operation of this station is provided by the U.S. Army Corps of Engineers and the U.S. Geological Survey.