Galley RunGalley Run is a long 2nd order tributary to the Youghiogheny River in Fayette County, Pennsylvania. This is the only stream of this name in the United States.CourseGalley Run rises about 0.5 miles west of Owensdale, Pennsylvania, and then flows south to join the Youghiogheny River at Broad Ford.WatershedGalley Run drains of area, receives about 42.3 in/year of precipitation, has a wetness index of 364.53, and is about 40% forested.