Largest lakes & reservoirs in West by acres
This is a comparison for lakes within USA > West > - 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 329 articles we have published for West lakes.
Search results: Sort lakes by surface acreage
Lake name ![]() |
Surface area in acres ![]() |
Lake description |
---|---|---|
Great Salt Lake (Great Salt Lake Country, Ogden & Northwest, USA, Utah, West) |
1,088,000 ac | Also known as America's Dead Sea Sometimes called “America’s Dead Sea,” the Great Salt Lake occupies approximately 1,700 square miles of Utah’s real estate. It is the second largest l… |
Iliamna Lake (Alaska, Southwest, USA, West) |
653,552 ac | Also known as Lake Iliamna Iliamna Lake, also known as Lake Iliamna, is the largest lake in Alaska and the second largest freshwater lake contained wholly within the United Stat… |
Becharof Lake (Alaska, Southwest, USA, West) |
289,705 ac | Becharof Lake, the second* largest lake in Alaska, is located on the Alaskan Peninsula. Stretching an incredible 290,000 acres, the lake measures 35 m… |
Selawik Lake (Alaska, Far North, USA, West) |
262,809 ac | Selawik Lake is located on the Arctic Circle in the the northwestern part of Alaska. Covering an impressive 263,000 acres*, the lake is the third larg… |
Fort Peck Lake (Missouri River Country, Montana, USA, West) |
245,000 ac | Fort Peck Lake, located 20 miles southeast of Glasgow, Montana on Montana Highway 24, is the 5th-largest man-made reservoir by volume in the United St… |
Salton Sea (California, Desert, USA, West) |
240,640 ac | Also known as Salton Lake Salton Sea, sometimes called Salton Lake, is an inland saline lake located in southern California along the Mexican border. Though hard to believe, th… |
Lake Powell (Arizona, Canyonlands, Color Country, North Central, Southwest, USA, Utah, West) |
160,800 ac | Lake Powell is located in one of Southern Utah’s most picturesque red-rock desert areas and in Arizona’s Navajo Indian Reservation. It is one of the U… |
Lake Mead (Arizona, Las Vegas Territory, Nevada, Southwest, USA, West, West Coast) |
157,900 ac | Lake Mead is the USA’s largest man-made reservoir in amount of water it can hold. Although Lake Powell is marginally larger in acreage at full-pond, L… |
Naknek Lake (Alaska, Southwest, USA, West) |
154,880 ac | Naknek Lake is located southwest of Anchorage on the Alaskan Peninsula. The lake is the fifth largest in Alaska, covering 144,315 acres* in the heart… |
Flathead Lake (Glacier Country, Montana, USA, West) |
122,560 ac | 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… |
Lake Tahoe (California, High Sierra, Nevada, Renoe-Tahoe Territory, USA, West) |
122,000 ac | Tucked into the Sierra Nevada Mountains and straddling the California-Nevada state line, Lake Tahoe is one of the most famous lakes in the United Stat… |
Pyramid Lake (Nevada, Renoe-Tahoe Territory, USA, West) |
117,400 ac | Pyramid Lake is a true natural wonder located in the Pyramid Lake Paiute Indian Reservation in western Nevada. Covering 117,400 acres, it is the third… |