Wyoming Dams
1,490 dams tracked by the National Inventory of Dams
Total Dams
1,490
High Hazard
100
6.7%
Poor / Unsatisfactory
576
Average Age
62 yrs
Hazard Classification
High100 (6.7%)
Significant104 (7.0%)
Low1,283 (86.1%)
Condition Assessment
Satisfactory45 (3.0%)
Fair752 (50.5%)
Poor / Unsatisfactory576 (38.7%)
Not Rated117 (7.9%)
Federal
193
State
22
Local
82
Private
1,174
Tallest Dams
- Buffalo Bill Dam350 ft
- Seminoe Dam295 ft
- Alcova Dam265 ft
- Kortes Dam244 ft
- Boysen Dam220 ft
High Hazard Dams
- Buffalo Bill DamHigh
- Seminoe DamHigh
- Alcova DamHigh
- Kortes DamHigh
- Boysen DamHigh
Poor Condition Dams
- LapreleUnsatisfactory
- Upper Van TassellPoor
- Hawk SpringsPoor
- EastgatePoor
- BischoffPoor
All Dams in Wyoming
Showing 276–300 of 543
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Kinney Carbon County | 20 | 1904 | Low | Poor |
| Knife Edge Washakie County | 32 | — | Low | Poor |
| Kovach Lincoln County | 16 | 1988 | Low | Poor |
| Kruger Lake Crook County | 15 | 1937 | Low | Poor |
| Lace Albany County | 15 | 1951 | Low | Poor |
| Lamb Lower Natrona County | 28 | 1952 | Low | Poor |
| Lance Creek No. 1 Niobrara County | 26 | 1965 | Low | Poor |
| Lance Creek No. 2 Niobrara County | 20 | 1966 | Low | Poor |
| Larry's Last Chance Big Horn County | 25 | 1965 | Low | Poor |
| Lazy Y No. 1 Converse County | 45 | 1957 | Low | Poor |
| Leach No. 1 Stock Niobrara County | 30 | 1961 | Low | Poor |
| Leavitt Big Horn County | 45 | 1956 | High | Poor |
| Leck Mayes Big Horn County | 8 | 1992 | Low | Poor |
| Leonard Degering Niobrara County | 21 | 1979 | Low | Poor |
| Lewis Big Horn County | 19 | 1948 | Low | Poor |
| Lion Johnson County | 31 | 1964 | Low | Poor |
| Little Boxelder No. 1 Converse County | 54 | 1971 | Significant | Poor |
| Little Boxelder No. 3 Converse County | 30 | 1955 | Low | Poor |
| Little Joe Detention Washakie County | 25 | 2003 | Low | Poor |
| Little Pierce Albany County | 24 | 1941 | Low | Poor |
| Little Red Sheridan County | 32 | 1956 | Low | Poor |
| Little Red No. 2 Sheridan County | 36 | 1966 | Low | Poor |
| Little Robber Det. Dam X Carbon County | 48 | 1953 | High | Poor |
| Little Willow Goshen County | 10 | 1906 | Low | Poor |
| Lone Tree Crook County | 17 | 1955 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.