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 26–50 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Alvie No. 1 Albany County | 38 | 1974 | Low | Poor |
| A & M Sweetwater County | 31 | 1978 | Low | Fair |
| Amelia No. 1 Niobrara County | 29 | 1961 | Low | Poor |
| Amerada Stock Johnson County | 25 | 1969 | Low | Fair |
| Amos Campbell County | 11 | 1914 | Low | Fair |
| Anaheim Johnson County | 33 | 2005 | Low | Fair |
| Anchor Dam Hot Springs County | 208 | 1960 | High | Not Available |
| Anderson Carbon County | 28 | 1931 | Low | Poor |
| Anderson No. 1 Niobrara County | 26 | 1959 | Low | Poor |
| Angle Detention Dam Park County | 30 | — | Low | Poor |
| Anita Johnson County | 38 | 1965 | Low | Fair |
| Anne Marie #1 Carbon County | 28 | 1996 | Low | Fair |
| Annis Natrona County | 25 | 1948 | Low | Fair |
| Antelope Carbon County | 16 | 1940 | Low | Fair |
| Antelope Carbon County | 18 | 1945 | Low | Fair |
| Antelope Dam Natrona County | 25 | 1956 | Low | Fair |
| Antelope Springs Dam Fremont County | 21 | 1940 | Low | Not Rated |
| Antwerp Sheridan County | 20 | 1902 | Low | Poor |
| A & P No. 1 Converse County | 27 | 1954 | Low | Fair |
| Arch Johnson County | 30 | 1949 | Low | Fair |
| Arnold Goshen County | 33 | 1968 | Low | Fair |
| Arrowhead Crook County | 23 | 1956 | Low | Poor |
| Artesian Lower Campbell County | 32 | 1951 | Low | Fair |
| Artesian Upper Campbell County | 21 | 1951 | Low | Fair |
| Atlantic Rim Carbon County | 32 | 1981 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.