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Here are the 45 lakes we have listed within USA > West > Washington - compared by Longest Shorelines.

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

Lake Name Shoreline length in miles Lake Description
Lake Roosevelt
(Washington, USA)
630 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 Wallula
(Oregon, USA / Washington, USA)
242 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)
135 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)
110 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 Entiat
(Washington, USA)
93 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 Sacajawea
(Washington, USA)
83 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 ...
Moses Lake
(Washington, USA)
62 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 ...
Lake Ozette
(Washington, USA)
57 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 ...
Lake Celilo
(Oregon, USA / Washington, USA)
55 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 Spokane
(Washington, USA)
54 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 ...
Riffe Lake
(Washington, USA)
52 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 Washington
(Washington, USA)
50 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 ...
Lake Tapps
(Washington, USA)
42 Lake Tapps Pictures Lake Tapps Message Forums Also known as: Tapps Reservoir
Located in the populous Seattle and Puget Sound Region of Washington, Lake Tapps delivers water supply, recreation and sound fish ecology to residents in the surrounding area. Although a man-made reservoir, there was an original Lake Tapps, much smaller and one of four small lakes in the area. In 1911, ...
Mayfield Lake
(Washington, USA)
34 Mayfield Lake Pictures Mayfield Lake Message Forums Mayfield Lake is cradled in the foothills of the Cascades in Lewis County, Washington. This 2,200-acre reservoir is conveniently located close to Mount St. Helens (about 60 miles southeast of the lake), Olympia and the Puget Sound (60 miles northwest), and Vancouver and the Columbia River (90 miles ...
Lake Osoyoos
(British Columbia, Canada / Washington, USA)
30 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 ...
Whatcom Lake
(Washington, USA)
30 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 ...
Alder Lake
(Washington, USA)
28 Alder Lake Message Forums 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 offers over 3000 acres of water fun. The sparsely developed lake stretches over seven miles alongside Highway 7, about 25 miles south of Tacoma, offering ...
Kachess Lake
(Washington, USA)
24 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 ...
Duck Lake
(Washington, USA)
23 Duck Lake Pictures Duck Lake Message Forums Duck Lake is an unlikely candidate for one of the best fishing lakes in southwestern Washington but holds its own with the best of contenders! Located within the community of Ocean Shores on the Point Brown Peninsula in the Olympic Peninsula and Pacific Coast region of Washington, Duck Lake is a freshwater ...
Lake Cushman
(Washington, USA)
23 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 ...
Rock Lake
(Washington, USA)
19 Rock Lake Pictures Rock Lake Message Forums Deep, dark and mysterious describes Northeast Washington's Rock Lake. Largest and deepest of the many lakes in the 'Channeled Scablands', Rock lake covers over 2000 acres between striking basalt cliffs towering above the surface. Long and narrow, Rock Lake presents a deceptively serene surface much ...
Lake Sammamish
(Washington, USA)
18 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, ...
Curlew Lake
(Washington, USA)
16 Nestled in a valley with breathtaking views of Colville National Forest, Ferry National Forest and mountain ranges, Curlew Lake is located 4.8 miles northeast of Republic, Washington. This natural lake's water level fluctuations are stabilized by a three foot dam built in 1926 and maintained by Ferry ...
Lake Wenatchee
(Washington, USA)
13 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 Quinault
(Washington, USA)
12 Lake Quinault Pictures Lake Quinault Message Forums Also known as: Quinault Lake
Located in northwest Washington's Olympic Peninsula tourism region, Lake Quinault is a clear, deep lake lying just west of the Olympic Mountains. Twelve miles of shoreline enclose this majestic 3,700-acre lake, and the surrounding area is bursting with fascinating things to see and do. For nature ...

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