| Brush Run | |
| Name Other: | Tributary to Buffalo Creek |
| Map Size: | 300 |
| Pushpin Map: | USA Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Brush Run mouth |
| Pushpin Map Alt: | Map of Brush Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Washington |
| Length: | 8.64miles[1] |
| Discharge1 Location: | Buffalo Creek |
| Discharge1 Avg: | 24.81cuft/s at mouth with Buffalo Creek[2] |
| Source1: | Georges Run divide |
| Source1 Location: | about 3 miles east of Buffalo, Pennsylvania |
| Source1 Coordinates: | 40.2247°N -80.3319°W[3] |
| Source1 Elevation: | 1238feet[4] |
| Mouth: | Buffalo Creek |
| Mouth Location: | Acheson, Pennsylvania |
| Mouth Coordinates: | 40.1931°N -80.4522°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: | Dunkle Run |
| Bridges: | Linnwood Drive, PA 844, PA 331, Reed Road, Greencove Road, Oak Ridge Road, PA 231 |
Brush Run is a 8.64miles long 1st order tributary to Buffalo Creek in Washington County, Pennsylvania.
Brush Run rises about 3 miles east of Buffalo, Pennsylvania, in Washington County and then flows west-southwest to join Buffalo Creek at Acheson.[5]
Brush Run drains of area, receives about 39.9 in/year of precipitation, has a wetness index of 323.39, and is about 40% forested.[2]