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Topografiske kart Washington
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Grand Coulee Dam
United States of America > Washington > Okanogan County
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…
Gjennomsnittlig høyde: 423 m