| Lake Umatilla | |
|---|---|
 | |
  Lake UmatillaShow map of Oregon Lake UmatillaShow map of Washington (state) Lake UmatillaShow map of the United States | |
| Location | Oregon / Washington |
| 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 |
| First flooded | 1971 (1971) |
| Max. length | 110 mi (177 km) |
| Surface elevation | 266 ft (81 m) |
Lake Umatilla is a 110-mile (177 km) long reservoir on the Columbia River in the United States, on the border of 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.
See also
- List of lakes in Washington (state)
- List of lakes in Oregon
- List of hydroelectric dams on the Columbia River
References
 | This Oregon location article is a stub. You can help Misplaced Pages by expanding it. |
 | This Benton County, Washington state location article is a stub. You can help Misplaced Pages by expanding it. |
- Columbia River Gorge
- Reservoirs in Washington (state)
- Reservoirs in Oregon
- Bodies of water of Benton County, Washington
- Lakes of Gilliam County, Oregon
- Bodies of water of Klickitat County, Washington
- Lakes of Morrow County, Oregon
- Lakes of Sherman County, Oregon
- Lakes of Umatilla County, Oregon
- Protected areas of Gilliam County, Oregon
- Protected areas of Morrow County, Oregon
- Protected areas of Sherman County, Oregon
- Protected areas of Umatilla County, Oregon
- Protected areas of Benton County, Washington
- Protected areas of Klickitat County, Washington
- 1971 establishments in Oregon
- 1971 establishments in Washington (state)
- Oregon geography stubs
- Central Washington geography stubs