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What is Franklin D. Roosevelt Lake?

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Columbia River Columbia River Gorge, Oregon-Washington border.

Franklin D. Roosevelt Lake is a reservoir located in northeastern Washington state. It was formed by the construction of the Grand Coulee Dam on the Columbia River.12

The reservoir stretches 151 miles (243 kilometers) in length and possesses a storage capacity of approximately 9,562,000 acre-feet (11,795,000,000 cubic meters).12