| Castleman 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 Castleman Run mouth |
| Pushpin Map Alt: | Map of Castleman Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | West Virginia |
| Subdivision Type3: | County |
| Subdivision Name3: | Brooke Ohio Washington (PA) |
| Subdivision Type4: | City |
| Subdivision Name4: | Bethany |
| Length: | 7.54miles[1] |
| Discharge1 Location: | Buffalo Creek |
| Discharge1 Avg: | 20.18cuft/s at mouth with Buffalo Creek[2] |
| Source1: | Little Wheeling Creek divide |
| Source1 Location: | about 1 mile north of West Alexander, Pennsylvania |
| Source1 Coordinates: | 40.1206°N -80.5153°W[3] |
| Source1 Elevation: | 1180feet[4] |
| Mouth: | Buffalo Creek |
| Mouth Location: | Bethany, West Virginia |
| Mouth Coordinates: | 40.2011°N -80.5536°W |
| Mouth Elevation: | 791feet[5] |
| Progression: | Buffalo Creek → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Ohio River |
| Tributaries Left: | Rices Run Garrison Run Longs Run |
| Tributaries Right: | Crupe Run North Prong Castleman Run |
| Waterbodies: | Castleman Run Lake |
| Bridges: | Crupes Run Road, Castleman Run Road (x2), Castleman Hill Road, Castleman Run Road (x2), Marlboro Spur Road |
Castleman Run is a 7.54miles long 3rd order tributary to Buffalo Creek in Brooke County, West Virginia. This is the only stream of this name in the United States.[3] Castleman Run Lake, an impoundment of this stream, is protected as Castleman Run Lake Wildlife Management Area by the State of West Virginia.
According to the Geographic Names Information System, it has also been known historically as:[3]
Castleman Run rises about 1 mile north of West Alexander, Pennsylvania, in Washington County and then flows northwest into West Virginia and Ohio County and then Brooke County to join Buffalo Creek at Bethany, West Virginia.[5]
Castleman Run drains of area, receives about 40.5 in/year of precipitation, has a wetness index of 299.39, and is about 66% forested.[2]