| Lake Bonneville | |
| Location: | Oregon / Washington, United States |
| Coords: | 45.7064°N -121.8108°W |
| Basin Countries: | United States |
| Length: | 46.8miles |
| Pushpin Map: | Oregon#Washington#USA |
| Pushpin Label Position: | bottom |
| Pushpin Map Alt: | Location of Lake Bonneville in Oregon and Washington, USA. |
Lake Bonneville is a reservoir on the Columbia River in the U.S. states of Oregon and Washington. It was created in 1937 with the construction of Bonneville Dam. The reservoir stretches between it and The Dalles Dam, upstream. It lies in parts of three counties in Oregon (Multnomah, Hood River, Wasco) and two in Washington (Skamania, Klickitat).