Oregon Hotel Reservations
Opened to partial activation in 1954, then to full activation in 1957, the McNary Dam is a major structure in Umatilla County.
McNary Dam is operated by the U.S. Army Corps of Engineers, and it impounds water from the Columbia River.
One of the most unique and forward thinking features of the McNary Dam – it's completely self sustaining.
With 22 spillway gates and a total capacity of 980 megawatts, the McNary Dam is a vital piece to life in Umatilla County.
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