| Buck Run | |
| Name Other: | Tributary to Buffalo Creek |
| Map Size: | 300 |
| Pushpin Map: | USA Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Buck Run mouth |
| Pushpin Map Alt: | Map of Buck Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Washington |
| Length: | 4.37miles[1] |
| Discharge1 Location: | Buffalo Creek |
| Discharge1 Avg: | 6.95cuft/s at mouth with Buffalo Creek[2] |
| Source1: | Dutch Fork divide |
| Source1 Location: | about 0.5 miles south of Donley, Pennsylvania |
| Source1 Coordinates: | 40.1375°N -80.4264°W[3] |
| Source1 Elevation: | 1170feet[4] |
| Mouth: | Buffalo Creek |
| Mouth Location: | Acheson, Pennsylvania |
| Mouth Coordinates: | 40.1914°N -80.4492°W |
| Mouth Elevation: | 886feet[5] |
| Progression: | Buffalo Creek → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Ohio River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Crane Road, Ramage Road, PA 231 |
Buck Run is a 4.37miles long 2nd order tributary to Buffalo Creek in Washington County, Pennsylvania.
Buck Run rises about 0.5 miles south of Donley, Pennsylvania, in Washington County and then flows north-northwest to join Buffalo Creek at Acheson.[5]
Buck Run drains of area, receives about 40.1 in/year of precipitation, has a wetness index of 310.59, and is about 67% forested.[2]