| Buffalo Run | |
| Name Other: | Tributary to Sewickley Creek |
| Map Size: | 300 |
| Pushpin Map: | USA Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Buffalo Run mouth |
| Pushpin Map Alt: | Map of Buffalo Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Westmoreland |
| Subdivision Type4: | Borough |
| Subdivision Name4: | Hunker |
| Length: | 3.89miles[1] |
| Discharge1 Location: | Sewickley Creek |
| Discharge1 Avg: | 13.61cuft/s at mouth with Sewickley Creek[2] |
| Source1: | Stauffer Run divide |
| Source1 Location: | West Bethany, Pennsylvania[3] |
| Source1 Coordinates: | 40.1803°N -79.6739°W[4] |
| Source1 Elevation: | 1140feet |
| Mouth: | Sewickley Creek |
| Mouth Location: | Hunker, Pennsylvania[5] |
| Mouth Coordinates: | 40.2017°N -79.625°W |
| Mouth Elevation: | 917feet |
| Progression: | Sewickley Creek → Youghiogheny River → Monongahela River → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Monongahela River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Hockey Road, Ruffsdale-Alverton Road, Leighty Hollow Road, PA 31, Railroad Street, State Route 3089, Thompson Hollow Road, State Route 3089 (x2) |
Buffalo Run is a 3.89miles long 3rd order tributary to Sewickley Creek in Westmoreland County, Pennsylvania.
Buffalo Run rises at West Bethany, Pennsylvania,[3] and then flows north-northwest to join Sewickley Creek at Hunker.[5]
Buffalo Run drains of area, receives about 41.5 in/year of precipitation, has a wetness index of 369.10, and is about 48% forested.[2]