| Galley Run | |
| Name Other: | Tributary to Youghiogheny River |
| Map Size: | 300 |
| Pushpin Map: | USA Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Galley Run mouth |
| Pushpin Map Alt: | Map of Galley Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Fayette |
| Length: | 2.91miles[1] |
| Discharge1 Location: | Youghiogheny River |
| Discharge1 Avg: | 4.85cuft/s at mouth with Youghiogheny River[2] |
| Source1: | Jacobs Creek divide |
| Source1 Location: | about 0.5 miles west of Owensdale, Pennsylvania[3] |
| Source1 Coordinates: | 40.08°N -79.6189°W[4] |
| Source1 Elevation: | 1075feet |
| Mouth: | Youghiogheny River |
| Mouth Location: | Broad Ford, Pennsylvania[5] |
| Mouth Coordinates: | 40.0469°N -79.6117°W |
| Mouth Elevation: | 852feet |
| Progression: | generally south |
| River System: | Monongahela River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Rush Drive, Kings Road (x2), Marchewka Lane, Dry Hill Road, Broadford Road (x2) |
Galley Run is a 2.91miles long 2nd order tributary to the Youghiogheny River in Fayette County, Pennsylvania. This is the only stream of this name in the United States.[4]
Galley Run rises about 0.5 miles west of Owensdale, Pennsylvania,[3] and then flows south to join the Youghiogheny River at Broad Ford.[5]
Galley Run drains of area, receives about 42.3 in/year of precipitation, has a wetness index of 364.53, and is about 40% forested.[2]