Pictures 2 Potomac Hydroelectric Power Plant, On West Virginia Shore of Potomac River, Harpers Ferry West Virginia Tweet POWER PLANT BUILDING LOOKING NORTHWEST. DETAIL OF TRASH RACK IN FOREGROUND (1995) WESTERN END OF THE POWER PLANT BUILDING LOOKING NORTH (1995) POWER PLANT BUILDING LOOKING NORTHEAST. DRY CANAL BED IN FOREGROUND (1995) WEST WALL OF POWER PLANT BUILDING LOOKING EAST SOUTHEAST (1995) EAST WALL OF POWER PLANT BUILDING LOOKING WEST (1995) CANAL SLUICE GATE LOCATED 150' WEST OF POWER PLANT.