The Eastern Continental Divide runs along portions of Backbone Mountain. The western part of the county, drained by the Youghiogheny River, is the only part of Maryland within the Mississippi River drainage basin. All other parts of the county are in the Chesapeake Bay basin.
the eastern continental divide runs along portions of backbone mountain the western part of the county drained by the youghiogheny river is the only part of maryland within the mississippi river drainage basin all other parts of the county are in the chesapeake bay basin