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Lake Umatilla facts for kids

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Lake Umatilla
Lake Umatilla....JPG
Location of Lake Umatilla in Oregon and Washington, USA.
Location of Lake Umatilla in Oregon and Washington, USA.
Lake Umatilla
Location in Oregon
Location of Lake Umatilla in Oregon and Washington, USA.
Location of Lake Umatilla in Oregon and Washington, USA.
Lake Umatilla
Location in Washington (state)
Location of Lake Umatilla in Oregon and Washington, USA.
Location of Lake Umatilla in Oregon and Washington, USA.
Lake Umatilla
Location in the United States
Location Oregon / Washington, United States
Coordinates 45°43′3″N 120°41′38″W / 45.71750°N 120.69389°W / 45.71750; -120.69389
Type reservoir
Primary inflows Columbia River
Primary outflows Columbia River
Basin countries United States

Lake Umatilla is a 110-mile (177 km) long reservoir on the Columbia River in the United States, between the U.S. states of Washington and Oregon. It was created in 1971 with the construction of John Day Dam, and stretches upstream to the McNary Dam. It lies in parts of Sherman, Gilliam, Morrow, and Umatilla counties in Oregon, and Klickitat and Benton counties in Washington.

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