Largest lakes & reservoirs in Eastern Oregon by acres
There is no widely-accepted minimum surface area that defines a lake. What LakeLubbers describes as a lake, you might call a pond. Acreage of a lake (or sometimes square kilometers) is most often measured at the top surface area when the lake is at normal elevation. The surface area can be considerably smaller or larger when lake levels are lower or higher than normal. North America’s Lake Superior is the world’s largest freshwater lake by this measure.The other measure of a lake’s size is the lake’s water volume. By that measure, the world’s largest freshwater lake is Lake Baikal in Siberia.
You can find many of the world’s largest lakes (acres) on LakeLubbers in the comparison table below. Note: For some lakes, "Largest Lakes - Acres" data is unknown or does not apply, so you may see fewer lakes than the total 4 articles we have published for Eastern Oregon lakes.
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Below are lakes within USA > US West Region > Oregon > Eastern Oregon > Compared by surface area in acres. This list does not represent all lakes in Eastern Oregon, only the 4 Eastern Oregon lake articles we have published on the LakeLubbers website.
Lake name  |
Surface area in acres |
Lake description |
|---|---|---|
| Lake Wallula, OR/WA (Eastern Oregon, Oregon, South Central Washington, US West Region, USA, Washington) |
38,800 ac | Lake Wallula, a 64 mile long reservoir, is a wide open glassy lake that extends from northeastern Oregon to southeastern Washington. Lake Wallula rece… |
| Hells Canyon Reservoirs (Eastern Oregon, Idaho, Oregon, Southwestern Idaho, US West Region, USA) |
15,000 ac | Also known as Brownlee Reservoir, Oxbow Reservoir, Hells Canyon Reservoir The three Hells Canyon Reservoirs are one of southwest Idaho’s most scenic locations. Idaho can’t claim this national treasure alone, however as it sh… |
| Wallowa Lake (Eastern Oregon, Oregon, US West Region, USA) |
1,502 ac | Wallowa Lake is the anchor-point for recreation in Oregon’s Eastern tourism region. This well-loved lake has been a sought-after destination since bef… |