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Here are the 41 lakes we have listed within USA > West > Washington - compared by Largest Lakes - Water Volume.

Note: For some lakes, "Largest Lakes - Water Volume" is unknown or does not apply, so this comparison may show fewer lakes than you originally selected. Suggest a new lake.

Lake Name Volume in acre-feet Lake Description
Lake Roosevelt
(Washington, USA)
9,402,000 Lake Roosevelt Pictures Also known as: Lake Franklin D. Roosevelt
Lake Roosevelt, located approximately 90 miles northwest of Spokane, Washington, covers 82,000 acres with a shoreline of 630 miles. Lake Roosevelt, also known as Lake Franklin D. Roosevelt, was formed when the Grand Coulee Dam was completed in 1942. As part of Franklin D. Roosevelt's New Deal ...
Lake Washington
(Washington, USA)
2,350,000 Lake Washington Pictures Lake Washington has the distinction of being the second largest natural lake in the state of Washington. This glacial lake is long and narrow, a "ribbon lake" that is approximately 15 miles long. Lake Washington is fed primarily by the Cedar River in the southeast corner and the Sammamish River in the ...
Riffe Lake
(Washington, USA)
1,686,000 Riffe Lake Pictures Riffe Lake Message Forums Also known as: Riffe Reservoir, Mossyrock Lake, Davisson Lake
Riffe Lake by any other name would still be a fantastic recreational spot. The name confusion for this man-made reservoir in the Seattle and Puget Sound region is because since opening in 1968, it has had two name changes. Originally named Mossyrock Lake because it formed behind Mossyrock Dam, the name ...
Lake Wallula
(Oregon, USA / Washington, USA)
1,350,000 Lake Wallula, a 64 mile long reservoir, is a wide open glassy lake that extends from northeastern Oregon to southeastern Washington. Lake Wallula received its name from the small town of Wallula, Washington which was flooded when the area began to fill with water in April 1953 after the building of ...
Banks Lake
(Washington, USA)
1,275,000 Banks Lake Pictures Banks Lake Message Forums Banks Lake is a 27 mile equalizing reservoir and part of the Columbia Basin Project, a major water resource project to provide irrigation water to fertile but arid land in central Washington. It was created when two rock-faced, earthfill dams were built at the ends of a large channel sculpted during ...
Lake Chelan
(Washington, USA)
1,040,000 Lake Chelan Pictures From the Salish Indian word for "deep notch", Lake Chelan is the third deepest lake in the United States with a maximum depth of almost 1500 feet. Lake Chelan is long and narrow, stretching more than 50 miles in length with an average width of one mile. This north-central Washington lake nestled within ...
Lake Ozette
(Washington, USA)
1,012,310 Lake Ozette Pictures Lake Ozette Message Forums Also known as: Ozette Lake
Nestled in dense forest just a few miles from the Pacific Coast, Lake Ozette sits snuggled into Washington's Olympic Peninsula tourism region, on the coastal strip of Olympic National Park. With few inhabitants and limited road access, Lake Ozette is a very remote destination for those looking to get ...
Ross Lake
(British Columbia, Canada / Washington, USA)
770,000 Ross Lake Pictures Ross Lake Message Forums Also known as: Ross Reservoir
Spectacular Ross Lake is one of the seldom seen gems in north-central Washington. This fantastic 22-mile long reservoir covers 11,680 acres along the flooded Skagit River Valley. Nestled between high sloping banks and against a backdrop of what are often called the Washington Alps, those who visit here ...
Whatcom Lake
(Washington, USA)
767,700 Whatcom Lake Pictures Also known as: Lake Whatcom
Whatcom Lake is a 5,000-acre natural lake surrounded by mountainous terrain located in Whatcom County, Washington. Whatcom is from a Nooksack Indian word meaning "noisy water", and was the name of a Nooksack chief. Whatcom Lake provides recreation, flood control, and drinking water to Whatcom County ...
Potholes Reservoir
(Washington, USA)
500,000 Potholes Reservoir Pictures Potholes Reservoir was formed by the building of the O'Sullivan Dam which is one of the largest earthfill dams in the United States. The name "pothole" originated due to large depressions in the earth in that area, some as large as 70 yards wide by 60 feet deep, created during the Pleistocene flooding ...
Lake Cushman
(Washington, USA)
450,000 Lake Cushman Pictures Lake Cushman Message Forums Nestled in the foothills of the majestic Olympic Mountains, Lake Cushman is known for its clear, blue water and alpine beauty. With 23 miles of shoreline, visitors can enjoy all kinds of outdoor recreation fun at this 4,000-acre lake including fishing, boating, water skiing, swimming, canoeing, bird ...
Cle Elum Lake
(Washington, USA)
436,900 Cle Elum Lake Pictures Cle Elum Lake Message Forums Also known as: Lake Cle Elum
Providing much needed water to the dry, fertile soil of north-central Washington, Cle Elum Lake is the largest of four irrigation storage reservoirs in the Yakima River Basin. Originally a small glacial lake, Cle Elum Lake lies seven miles northwest of the community of Cle Elum in Kittitas County. An ...
Lake Sacajawea
(Washington, USA)
406,500 Lake Sacajawea Pictures Named after the Shoshone woman, Sacajawea, who was a member of the Lewis and Clark expedition, Lake Sacajawea is located in south-central Washington. Lake Sacajawea, a 32 mile long reservoir behind Ice Harbor Dam, began filling on November 28, 1961 and was completed in April 1962. The Ice Harbor ...
Lake Entiat
(Washington, USA)
382,000 Lake Entiat Pictures Lake Entiat Message Forums Also known as: Rocky Reach Reservoir
No trip to the north central part of Washington would be complete without a visit to Lake Entiat and the Rocky Reach Dam. Lake Entiat is a 9,100 acre reservoir that was created in 1962 when the Rocky Reach Dam was completed on the Columbia River in Douglas County. The glass-like waters of the reservoir ...
Lake Wenatchee
(Washington, USA)
364,560 Lake Wenatchee Pictures Lake Wenatchee Message Forums Lake Wenatchee is a high mountain lake located in the Wenatchee National Forest in the Cascade Mountains of Washington state. Fed by the Little Wenatchee River, White River, and snow runoff from the surrounding mountains, Lake Wenatchee drains into the Wenatchee River. Wenatchee is derived from a local ...
Lake Sammamish
(Washington, USA)
283,860 Lake Sammamish Pictures Lake Sammamish Message Forums At just under 5,000 acres, Lake Sammamish is one of the major recreational lakes in the state. The lake provides activities for fishermen, boaters, jet skiers, water skiers, swimmers, picnickers, and those just wanting to enjoy the scenery. Lake Sammamish is less than a 30 minute drive from Seattle, ...
Lake Celilo
(Oregon, USA / Washington, USA)
277,000 Lake Celilo Pictures 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 straddles the border of Oregon and Washington. Majestic Mount Hood is visible while looking downstream towards The Dalles. Although most of the shoreline ...
Lake Osoyoos
(British Columbia, Canada / Washington, USA)
266,800 Lake Osoyoos Pictures Lake Osoyoos Message Forums Also known as: Osoyoos Lake
Lake Osoyoos spans more than 5,700 acres and straddles the border of British Columbia, Canada and Washington state in the United States. The Okanagan River flows into Lake Osoyoos in a semi-arid region of British Columbia known as Desert Wine Country. This region has very low annual rainfall and some ...
Lake Spokane
(Washington, USA)
243,341 Lake Spokane Pictures Also known as: Long Lake
Lake Spokane, a 24 mile long reservoir, is so named because of its close proximity to Spokane, Washington. However, some people call it Long Lake, after its dam, Long Lake Dam. The dam was built in a spot where the Spokane River makes a complete horseshoe bend and was completed in 1915. At that time ...
Kachess Lake
(Washington, USA)
239,000 Kachess Lake Pictures Kachess Lake Message Forums "Kachess" means "more fish," a name that aptly describes Lake Kachess in North Central region of Washington. The lake is full of fish, and anglers can pit themselves against the rainbow and cutthroat trout and wrestle the landlocked kokanee salmon. The fishing, however, is not the only thing that ...
Keechelus Lake
(Washington, USA)
157,900 Keechelus Lake Pictures Keechelus Lake Message Forums Also known as: Lake Keechelus, Keechelus Reservoir
It is a picture postcard - snow capped mountains mirrored back in clean, clear, mountain water. Set against the backdrop of Washington's Cascade Mountains, Keechelus Lake is a picture come to life. With 2,560 acres of water to fish, boat or explore, Lake Keechelus has more than enough room for everyone. ...
Moses Lake
(Washington, USA)
131,000 Moses Lake Pictures Located where Washington State's Pacific coast transforms into the arid desert of the eastern half, Moses Lake has over 6,800 acres of surface area encircled by over 62 miles of shoreline. Moses Lake offers a wide array of boating, fishing, camping, and swimming opportunities in Grant County. The ...
Coldwater Lake
(Washington, USA)
70,000 Coldwater Lake Pictures Today Coldwater Lake is a peaceful, scenic 750-acre lake, but the violence of Mount St. Helens created the lake in 1980. On May 18, 1980, a 5.1 magnitude earthquake under Mount St. Helens caused a huge landslide and started an eruption that would forever change the face of the mountain. In 15 minutes ...
American Lake
(Washington, USA)
60,000 American Lake Pictures Less than three miles inland from Puget Sound, American Lake is one of the lesser known vacation destinations in Washington's Seattle-King County Region. Lovely American Lake is often bypassed for the grandeur of Puget Sound. Little do visitors know what they're missing at American Lake. Part of the ...
Deer Lake
(Washington, USA)
57,000 Deer Lake, located in Stevens County, Washington, is a spring-fed and snow-fed lake with approximately a 1,150-acre surface in the Colville River watershed. The crystal clear water of Deer Lake reflects the beautiful mountain peaks and lush forests that are abundant in the area. With the thick ...

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