Largest lakes & reservoirs in Willamette Valley by acres
This is a comparison for lakes within USA > West > Oregon > Willamette Valley > - Compared by surface area in acres.Note: For some lakes, "Largest Lakes - Acres" data is unknown or does not apply, so this table may display fewer lakes than the total 2 articles we have published for Willamette Valley lakes.
Search results: Sort lakes by surface acreage
Lake name ![]() |
Surface area in acres ![]() |
Lake description |
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Fern Ridge Lake (Oregon, USA, West, Willamette Valley) |
9,000 ac | Also known as Fern Ridge Reservoir Fern Ridge Lake is the largest of thirteen flood control reservoirs in Oregon’s Williamette Valley. With 9000 acres of water, Fern Ridge Lake is a pre… |
Detroit Lake OR (Oregon, USA, West, Willamette Valley) |
3,580 ac | Conveniently located just 46 miles south of Salem in Oregon’s Willamette Valley tourism region lies Detroit Lake, a 3,580-acre artificial freshwater r… |