Largest lakes & reservoirs in Eastern Oregon by shoreline length
The length of the exterior shoreline around a lake is measured at the lake’s normal elevation. The shoreline length can be considerably shorter or longer when lake water levels are lower or higher than normal. A lake with many coves has a much longer shoreline than a lake of similar surface area that is nearly circular in shape.When known, the shoreline miles that we report in our statistics include only the lake’s exterior shoreline, and exclude the shorelines of islands located within a lake’s boundaries. In lakes with many islands, those islands’ combined shorelines may exceed a lake’s exterior shoreline.
You can find many of the world’s longest-shoreline lakes on LakeLubbers. Note: For some lakes, "Longest Shorelines" data is unknown or does not apply, so this table may display 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 longest shoreline length in miles. 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  |
Shoreline length in miles |
Lake description |
|---|---|---|
| Lake Wallula, OR/WA (Eastern Oregon, Oregon, South Central Washington, US West Region, USA, Washington) |
242 mi | 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) |
193 mi | 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) |
8 mi | 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… |