Grand Coulee Dam is a gravity dam on the Columbia River in the U.S. state of Washington built to produce hydroelectric power and provide irrigation. It was constructed between 1933 and 1942 originally with two power plants. A third power station was completed in 1974 to increase its energy production. It is the largest electric power-producing facility in the United States.The proposal to build the dam was the focus of a bitter debate during the 1920s between two groups.
thumbnail
point
length (km)
1591.97
building start date
1933-07-16
building start year
1933-01-01T00:00:00+02:00
height (cm)
167.64
location
Coulee Dam Washington, Grant County Washington, Okanogan County Washington, Grand Coulee Washington, Washington (state)
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