That tributary's namesake valley was fought in by Phillip Sheridan and enters this river at Harpers Ferry.
A civil war battle named for a tributary of this river saw Lew Wallace hold a position on the Georgetown pike. One manmade structure paralleling this river notably had a very large Inclined Plane and still has the Paw Paw tunnel. That structure, whose aqueduct (*) Jubal Early tried to blow up, was superseded by the B&amp;O railroad and is the C&amp;O canal. This river crosses the fall line above Mather Gorge at Great Falls. The ► Blue Ridge has a water gap on this river where a tributary that passes through Front Royal enters this river. That tributary's namesake valley was fought in by Phillip Sheridan and enters this river at Harpers Ferry. For ten points, the Shenandoah is the largest tributary of what river that forms the southern border of Maryland?
A civil war battle named for a tributary of this river saw Lew Wallace hold a position on the Georgetown pike.
Potomac River