Washington topographic maps

Average elevation: 165 m

Average elevation: 38 m

After power shortages in the Northwest during the 1960s, it was determined the six remaining planned pumps be pump-generators. When energy demand is high, the pump-generators can generate electricity with water from the Banks Lake feeder canal adjacent to the dam at a higher elevation. By 1973, the…

Average elevation: 423 m

Average elevation: 40 m

Average elevation: 37 m

Average elevation: 70 m

Average elevation: 25 m

Average elevation: 58 m