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 151–175 of 543
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Eshom Platte County | 28 | 1947 | Low | Poor |
| Ethel #3 Sheridan County | 28 | 2008 | Low | Poor |
| Ewen Big Horn County | 40 | 1946 | Low | Poor |
| Ewen - Pence Gulch Big Horn County | 30 | 1953 | Low | Poor |
| Falxa No. 1 Johnson County | 25 | 1958 | Low | Poor |
| Field Weston County | 20 | 1958 | Low | Poor |
| Fields Niobrara County | 25 | 1953 | Low | Poor |
| Finley Carbon County | 30 | 1977 | Low | Poor |
| Fisher Johnson County | 24 | 1968 | Low | Poor |
| Five Springs No. 1 Big Horn County | 24 | 1970 | Low | Poor |
| Five Springs No. 2 Big Horn County | 32 | 1970 | Low | Poor |
| Flathead Washakie County | 45 | 1979 | Significant | Poor |
| Flockhart Dam Big Horn County | 32 | — | Low | Poor |
| Foster No. 1 Dam 1a (2nd Enl.) Park County | 24 | 1953 | Low | Poor |
| Fox Farm Campbell County | 30 | 1957 | Low | Poor |
| Franklin Lincoln County | 12 | 1911 | Low | Poor |
| Fred No. 1 Niobrara County | 31 | 1957 | Low | Poor |
| Frog Creek #1 Weston County | 16 | 1955 | Low | Poor |
| Frost No. 2 Park County | 14 | 1956 | Low | Poor |
| Gafford Converse County | 35 | 1951 | Low | Poor |
| Gammon Johnson County | 34 | 1974 | Low | Poor |
| Gardner Laramie County | 20 | 1962 | Low | Poor |
| Garnett Big Horn County | 30 | 1944 | Significant | Poor |
| Garrelts No. 1 Goshen County | 17 | 1975 | Low | Poor |
| Gary Campbell County | 34 | 1952 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.