USGS Water-Year Summary 2024
03049819 GIRTYS RUN ABOVE GRANT AVENUE AT MILLVALE, PA
LOCATION - Lat 40°28'40.2", long 79°58'12.1" referenced to North American Datum of 1983, Allegheny County, PA, Hydrologic Unit 05010009, 2.0 mi north of Troy Hill, 0.2 mi upstream from mouth at Allegheny River, and 100 ft upstream from Grant Avenue bridge at Millvale.
DRAINAGE AREA - 13.4 mi².
REVISIONS HISTORY - Revisions: Prior to January 2, 2024, the datum of gage was reported as 720 ft above National Geodetic Vertical Datum of 1929.
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 2006 to September 2014 (continuous discharge); October 2014 to current year (gage height only).
GAGE - Water-stage recorder and crest stage gage. Datum of gage is 716.8 ft above North American Vertical Datum of 1988. Prior to January 2, 2024, the datum of gage was erroneously reported as 720 ft above the National Geodetic Vertical Datum of 1929. Satellite telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers, Pittsburgh District.