Lake Umatilla
Lake Umatilla is a 110-mile (177 km) long[1] 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.
| Lake Umatilla | |
|---|---|
 | |
| Location | Oregon / Washington, United States |
| Coordinates | 45°43′3″N 120°41′38″W |
| Type | reservoir |
| Primary inflows | Columbia River |
| Primary outflows | Columbia River |
| Basin countries | United States |
See also
- List of lakes in Washington (state)
- List of lakes in Oregon
- List of hydroelectric dams on the Columbia River
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