Largest lakes & reservoirs in US West Region by shoreline length
The length of the exterior shoreline around a lake is measured at the lake’s normal elevation. The shoreline length can be considerably shorter or longer when lake water levels are lower or higher than normal. A lake with many coves has a much longer shoreline than a lake of similar surface area that is nearly circular in shape.When known, the shoreline miles that we report in our statistics include only the lake’s exterior shoreline, and exclude the shorelines of islands located within a lake’s boundaries. In lakes with many islands, those islands’ combined shorelines may exceed a lake’s exterior shoreline.
You can find many of the world’s longest-shoreline lakes on LakeLubbers. Note: For some lakes, "Longest Shorelines" data is unknown or does not apply, so this table may display fewer lakes than the total 329 articles we have published for US West Region lakes.
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Below are lakes within USA > US West Region > Compared by longest shoreline length in miles. This list does not represent all lakes in US West Region, only the 329 US West Region lake articles we have published on the LakeLubbers website.
Lake name | Shoreline length in miles | Lake description |
---|---|---|
Seminoe Reservoir, WY (Central Wyoming, US West Region, USA, Wyoming) |
180 mi | Seminoe Reservoir is an outdoor person’s wonderland with great fishing and an over 20,000 acre surface for boating and water sports. Near the north en … |
Hungry Horse Reservoir (Glacier Country, MT, Montana, US West Region, USA) |
170 mi | Hungry Horse Reservoir in Montana’s Glacier Country offers a wealth of recreational opportunities to northwestern Montana visitors. The nearly 24,000- … |
Lake Oroville, CA (California, Shasta Cascade Region, CA, US West Region, USA) |
167 mi | Also known as Oroville Reservoir Lake Oroville, snuggled into the Sierra Nevada Foothills about 75 miles north of Sacramento, is one of northern California’s favorite playgrounds. Boa … |
Lake Berryessa, CA (California, Central Valley Region, CA, US West Region, USA) |
165 mi | Lake Berryessa, nestled into the heart of California’s wine country, is the largest lake in Napa County. The U.S. Bureau of Reclamation built the Mont … |
Lake Nacimiento, CA (California, Central Coast Region, CA, US West Region, USA) |
163 mi | Also known as Dragon Lake Located in central California in northern San Luis Obispo County, Lake Nacimiento is truly a sight to see. This 18.6 mile long beauty received the nic … |
Flathead Lake, MT (Glacier Country, MT, Montana, US West Region, USA) |
161 mi | Carved out by the historic glaciers of the last ice age approximately 11,000 years ago, Flathead Lake is one of the largest natural freshwater lakes i … |
Don Pedro Lake, CA (California, Gold Country Region, CA, US West Region, USA) |
160 mi | Also known as Lake Don Pedro, Don Pedro Reservoir Don Pedro Lake, also known as Don Pedro Reservoir and Lake Don Pedro, is nestled into the foothills of the Sierra Nevada Mountains. With a surface are … |
Navajo Lake NM (Colorado, New Mexico, Northwest New Mexico, NM, Southeast Colorado, US Southwest Region, US West Region, USA) |
159 mi | Also known as Navajo Reservoir Navajo Lake offers a surprising and welcome expanse of water in northwestern New Mexico. The 15,600-acre reservoir stretches north into southwest Colo … |
Lake Mohave, AZ/NV (Arizona, Las Vegas Territory, NV, Nevada, US Southwest Region, US West Region, USA, West Coast Region, AZ) |
150 mi | Lake Mohave is a man-made reservoir on the Colorado River that spans 28,260 acres. It is a part of the Lake Mead National Recreation Area, and was cre … |
Trinity Lake, CA (California, Shasta Cascade Region, CA, US West Region, USA) |
145 mi | Also known as Clair Engle Lake In 1976 Tim Brady from Weaverville caught the California record smallmouth bass in Trinity Lake. The quiet lake still draws anglers today, both for th … |
Yellowstone Lake, WY (Northwest Wyoming, US West Region, USA, Wyoming) |
141 mi | Yellowstone Lake is located in the southeast corner of Yellowstone National Park, Wyoming. The Park was established in 1872, making it the first natio … |
Banks Lake, WA (North Central Washington, US West Region, USA, Washington) |
135 mi | 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 fer … |