Largest lakes & reservoirs in Wyoming by water volume
The estimated volume of water that a lake contains is measured at the lake’s normal elevation. By this measure, the world’s largest freshwater lake is Siberia’s Lake Baikal.Water Volume can be measured in acre-feet, in cubic miles, or in cubic kilometers. One acre-foot is the amount of water needed to cover one acre (43,560 square feet) to a depth of one foot. One cubic mile equals 3,379,200 acre-feet. One cubic kilometer equals 810,713 acre-feet. 1 acre-foot is equal to 325,851 US gallons. Siberia’s Lake Baikal contains about 6,276,367,740,000,000 gallons of freshwater – nearly 1 million gallons for every living person on earth.
The other – and more widely used – measure of a lake’s size is the lake’s surface acreage. By that measure, the world’s largest freshwater lake is North America’s Lake Superior.
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.
You can find many of the the world’s largest lakes (by water volume) on LakeLubbers. Note: For some lakes, the water volume data is unknown or does not apply, so you may see fewer lakes than the total 11 articles we have published for Wyoming lakes.
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Below are lakes within USA > US West Region > Wyoming > Compared by water volume. This list does not represent all lakes in Wyoming, only the 11 Wyoming lake articles we have published on the LakeLubbers website.
Lake name  |
Water vol. in ac-ft |
Lake description |
|---|---|---|
| Yellowstone Lake, WY (Northwest Wyoming, US West Region, USA, Wyoming) |
12,095,264 ac-ft | Yellowstone Lake is located in the southeast corner of Yellowstone National Park, Wyoming. The Park was established in 1872, making it the first natio… |
| Flaming Gorge Reservoir, UT/WY (Dinosaurland Region, UT, Southwest Wyoming, US West Region, USA, Utah, Wyoming) |
3,788,900 ac-ft | With more than 42,000 acres of boating and fishing waters, surrounded by choice camping and picnic areas, Flaming Gorge Reservoir – straddling the Wyo… |
| Fremont Lake (Southwest Wyoming, US West Region, USA, Wyoming) |
1,370,105 ac-ft | (Also known as The Deep, Stewart Lake (historical)) One of the best-kept secret lake destinations in Northwestern Wyoming is spectacular Fremont Lake. Formed by nature when glaciers gouged out a deep tr… |
| Palisades Reservoir, ID/WY (Eastern Idaho, Idaho, Southwest Wyoming, US West Region, USA, Wyoming) |
1,200,000 ac-ft | Palisades Reservoir is set in southeast Idaho, east of Idaho Falls in a beautiful river valley. The southern end of the reservoir extends into Wyoming… |
| Seminoe Reservoir, WY (Central Wyoming, US West Region, USA, Wyoming) |
1,017,279 ac-ft | 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… |
| Pathfinder Reservoir, WY (Central Wyoming, US West Region, USA, Wyoming) |
1,016,000 ac-ft | Pathfinder Reservoir is the oldest reservoir along the North Platte River. With over 21,000 acres of water it is a welcome destination for more than 1… |
| Boysen Reservoir (Central Wyoming, US West Region, USA, Wyoming) |
952,400 ac-ft | (Also known as Boysen Lake) Its gleaming expanse framed by the barren high desert hills of Central Wyoming, Boysen Reservoir offers a welcome respite from the summer heat. Nearly… |
| Jackson Lake, WY (Northwest Wyoming, US West Region, USA, Wyoming) |
847,000 ac-ft | Jackson Lake is located in northwestern Wyoming, just south of Yellowstone National Park. It is in the heart of Grand Teton National Park, one of the… |
| Buffalo Bill Reservoir (Northwest Wyoming, US West Region, USA, Wyoming) |
623,557 ac-ft | Buffalo Bill Reservoir is a historic, 8,315-acre lake, six miles from the town of Cody, in Park County, Wyoming. Constructed between the years of 1905… |