Newest reservoirs in Southwest Washington
The year that a reservoir was first filled to the reservoir’s normal elevation – or the year that a natural lake was first dammed – is the determining factor in the age of the body of water. A large reservoir can take more than a year to fill after its dam is first closed. You can find many of the the world’s newest reservoirs on LakeLubbers in the comparison table below. Many of the world’s oldest reservoirs appear on the last page of that list. Note: For some lakes, the completion year data is unknown, so you may see fewer lakes than the total 5 articles we have published for Southwest Washington lakes.Thinking about booking a Southwest Washington lake vacation home rental, cabin or hotel?
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Below are lakes within USA > US West Region > Washington > Southwest Washington > Compared by newest (youngest) reservoirs and the year it was completed. This list does not represent all lakes in Southwest Washington, only the 5 Southwest Washington lake articles we have published on the LakeLubbers website.
Lake name  |
Completion year |
Lake description |
|---|---|---|
| Silver Lake Cowlitz County, WA (Southwest Washington, US West Region, USA, Washington) |
1971 | Silver Lake is a shallow 3,000-acre wetland lake located in southwest Washington. Formed by an early eruption of Mount St. Helens, which permanently d… |
| Lake Celilo, OR/WA (Mt. Hood-The Gorge Region, OR, Oregon, Southwest Washington, US West Region, USA, Washington) |
1957 | Also known as Dalles Lock and Dam Beautiful and serene Lake Celilo is located off of I-84 about an hour and a half east of Portland, Oregon. Lake Celilo stretches 24 miles long and str… |
| Alder Lake (Southwest Washington, US West Region, USA, Washington) |
1945 | Also known as Alder Reservoir Vacationers planning to visit Mount Rainer need to fit beautiful Alder Lake into their plans. This reservoir in the Southwest Region of Washington off… |