'The single greatest source of water power in the U.S. is on this river'
The Columbia River (Grand Coulee Dam)
RIVERS: The single greatest source of water power in the U.S. is on this river
The single greatest source of water power in the U.S. is on this river
The single greatest source of water power in the U.S. is on this river
RIVERS
The Columbia River Grand Coulee Dam
RIVERS