Newest reservoirs in Wyoming
The year that a reservoir was first filled to the reservoir’s normal elevation – or the year that a natural lake was first dammed – is the determining factor in the age of the body of water. A large reservoir can take more than a year to fill after its dam is first closed. You can find many of the the world’s newest reservoirs on LakeLubbers in the comparison table below. Many of the world’s oldest reservoirs appear on the last page of that list. Note: For some lakes, the completion year data is unknown, so you may see fewer lakes than the total 11 articles we have published for Wyoming lakes.Thinking about booking a Wyoming lake vacation home rental, cabin or hotel?
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Below are lakes within USA > US West Region > Wyoming > Compared by newest (youngest) reservoirs and the year it was completed. This list does not represent all lakes in Wyoming, only the 11 Wyoming lake articles we have published on the LakeLubbers website.
Lake name  |
Completion year |
Lake description |
|---|---|---|
| Flaming Gorge Reservoir, UT/WY (Dinosaurland Region, UT, Southwest Wyoming, US West Region, USA, Utah, Wyoming) |
1964 | With more than 42,000 acres of boating and fishing waters, surrounded by choice camping and picnic areas, Flaming Gorge Reservoir – straddling the Wyo… |
| Palisades Reservoir, ID/WY (Eastern Idaho, Idaho, Southwest Wyoming, US West Region, USA, Wyoming) |
1957 | 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… |
| Boysen Reservoir (Central Wyoming, US West Region, USA, Wyoming) |
1952 | 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… |
| Seminoe Reservoir, WY (Central Wyoming, US West Region, USA, Wyoming) |
1939 | 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… |
| Jackson Lake, WY (Northwest Wyoming, US West Region, USA, Wyoming) |
1916 | 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) |
1910 | 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… |
| Pathfinder Reservoir, WY (Central Wyoming, US West Region, USA, Wyoming) |
1909 | 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… |