Largest lakes & reservoirs in Oregon by water volume
This is a comparison for lakes within USA > West > Oregon > - Compared by Largest Lakes - Water Volume in acre-foot.For some lakes, "Largest Lakes - Water Volume" is unknown or does not apply, so this table may display fewer lakes than the total 29 articles we have published for Oregon lakes.
Note: In the United States, an acre foot is a unit of volume used to refer to large-scale bodies of water. It is defined by the volume of water needed to cover 1 acre of surface area to a depth of 1 foot.
Search results: Sort lakes by water volume
Lake name ![]() |
Water vol. in ac-ft ![]() |
Lake description |
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Crater Lake (Oregon, Southern, USA, West) |
14,100,000 ac-ft | Crater Lake is on the crest of the Cascade Range in southern Oregon, about 100 miles from the ocean, and is the centerpiece of Crater Lake National Pa… |
Hells Canyon Reservoirs (Eastern, Idaho, Oregon, Southwestern, USA, West) |
1,420,000 ac-ft | (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… |
Lake Wallula (Eastern, Oregon, South Central Washington, USA, Washington, West) |
1,350,000 ac-ft | Lake Wallula, a 64 mile long reservoir, is a wide open glassy lake that extends from northeastern Oregon to southeastern Washington. Lake Wallula rece… |
Upper Klamath Lake (Oregon, Southern, USA, West) |
873,000 ac-ft | Stretching for an impressive 30 miles, Upper Klamath Lake is the largest freshwater lake in the State of Oregon. Nestled in the Klamath Basin, it is s… |
Crescent Lake OR (Central, Oregon, USA, West) |
566,600 ac-ft | Crescent Lake, aptly named for its shape, lies on the eastern slope of the Cascade Mountains, in the northwest corner of Klamath County, Oregon. With… |
Detroit Lake OR (Oregon, USA, West, Willamette Valley) |
455,000 ac-ft | 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… |
Lake Celilo (Mt. Hood-The Gorge, Oregon, Southwest Washington, USA, Washington, West) |
277,000 ac-ft | (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… |
Paulina Lake (Central, Oregon, USA, West) |
250,000 ac-ft | Set in the high desert country of central Oregon, Paulina Lake is one of two sparkling lakes resting in the caldera of Newberry Crater. Part of Newber… |
Wickiup Reservoir (Central, Oregon, USA, West) |
188,476 ac-ft | (Also known as Wickiup Lake) Wickiup Reservoir is an 11,000 acre angler’s paradise. Camping areas are plentiful, and boat launching ramps are located at most. The reservoir gets i… |
Prineville Reservoir (Central, Oregon, USA, West) |
150,200 ac-ft | The 3,030-acre Prineville Reservoir is one of Central Oregon’s prolific fishing and outdoor recreation water bodies. The lake’s well-developed public… |
Fern Ridge Lake (Oregon, USA, West, Willamette Valley) |
101,100 ac-ft | (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… |
Applegate Lake (Oregon, Southern, USA, West) |
76,164 ac-ft | (Also known as Applegate Reservoir) Reflecting the peaks of the Siskiyou Mountains, Applegate Lake is surrounded by Rogue River National Forest in southwestern Oregon’s Jackson County. L… |