Columbia River Gorge
Looking east along the Columbia River Gorge from the Vista House along Historic U.S. Highway 30 in Oregon. The Columbia River Treaty, signed by Canada and the U.S. in 1961, was developed to coordinate flood control and optimize electrical energy production in the Columbia Basin.

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Photo by: Eileen L. Williamson |  VIRIN: 150927-A-RO090-400.JPG