| Pierce Run | |
| Name Other: | Tributary to Buffalo Creek |
| Map Size: | 300 |
| Pushpin Map: | USA West Virginia#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Pierce Run mouth |
| Pushpin Map Alt: | Map of Pierce Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | West Virginia |
| Subdivision Type3: | County |
| Subdivision Name3: | Brooke |
| Length: | 4.21miles[1] |
| Discharge1 Location: | Buffalo Creek |
| Discharge1 Avg: | 6.6cuft/s at mouth with Buffalo Creek[2] |
| Source1: | Cross Creek divide |
| Source1 Location: | Franklin, West Virginia |
| Source1 Coordinates: | 40.2753°N -80.5522°W[3] |
| Source1 Elevation: | 1120feet[4] |
| Mouth: | Buffalo Creek |
| Mouth Location: | about 0.25 miles southeast of McKinleyville, West Virginia |
| Mouth Coordinates: | 40.2386°N -80.5869°W |
| Mouth Elevation: | 689feet[5] |
| Progression: | Buffalo Creek → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Ohio River |
| Tributaries Left: | unnamed tributaties |
| Tributaries Right: | unnamed tributaries |
| Bridges: | WV 20 (x4) |
Pierce Run is a 4.21miles long 2nd order tributary to Buffalo Creek in Brooke County, West Virginia.
According to the Geographic Names Information System, it has also been known historically as:[3]
Pierce Run rises in Franklin, West Virginia, and then flows south and southwest to join Buffalo Creek about 0.25 miles southeast of McKinleyville.[5]
Pierce Run drains of area, receives about 40.1 in/year of precipitation, has a wetness index of 299.07, and is about 74% forested.[2]