Mill Run is a 9.1-mile-long (14.6 km)[1]tributarystream of theSouth Branch Potomac River, belonging to thePotomac River andChesapeake Baywatersheds.[2] The stream is located inHampshire County in theEastern Panhandle of theU.S. state ofWest Virginia. Mill Run rises on Nathaniel Mountain and flows northeast, then northwest into the South Branch south ofRomney nearHampshire Park onSouth Branch River Road (West Virginia Secondary Route 8).
Mill Run's headwaters lie in a hollow betweenSouth Branch Mountain (3028 feet) andNathaniel Mountain (2739 feet) in theNathaniel Mountain Wildlife Management Area. The stream runs northeast, then northwest, where it is met with a number of trails and old lumbering roads used by fishermen and hunters that utilize the WMA. Two small unnamed streams also born from hollows in Nathaniel Mountain join Mill Run as it flows towardPeterkin Conference Center. After passing through Peterkin, Mill Run adjoins Hampshire Park and its4-H camp facilities such as itscouncil circle and makes its way past the old Pancake Schoolhouse. Mill Run then flows under South Branch River Road and empties into the South Branch near Riverview Farm.
| Bridge | Route | Location |
|---|---|---|
| Advent Lodge Wooden Bridge | Walkway at Peterkin Conference Center | Romney |
| Mill Run Bridge | South Branch River Road (CR 8) | Romney |
39°18′08″N78°48′05″W / 39.30222°N 78.80139°W /39.30222; -78.80139