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 801–825 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Long Pond Carbon County | 19 | 1947 | Low | Fair |
| Loren Ramsey Fish Platte County | 29 | 1972 | Low | Poor |
| Lost Natrona County | 29 | 1966 | Low | Fair |
| Louis Crook County | 26 | 1959 | Low | Poor |
| Love Ex 11-14 Campbell County | 35 | 1952 | Low | Fair |
| Low Carbon County | 20 | 1946 | Low | Fair |
| Lowe No. 1 Sheridan County | 25 | 1954 | Low | Poor |
| Lower Afton Lincoln County | 30 | 1942 | Low | Satisfactory |
| Lower Goose Pond Fremont County | 8 | — | Low | Not Rated |
| Lower Hackett Dam Natrona County | 37 | 1967 | Low | Unsatisfactory |
| Lower Morgan Campbell County | 88 | 2001 | Significant | Not Rated |
| Lower Snake Draw (4th Enl.) Sweetwater County | 85 | 1998 | Significant | Fair |
| Lower Spicer Natrona County | 17 | 1951 | Significant | Poor |
| Lower Sunshine Park County | 162 | 1972 | High | Fair |
| Lox Natrona County | 35 | 1966 | Low | Poor |
| Lsrcd Section 13 Big Horn County | 25 | 1997 | Low | Fair |
| Luce Park County | 19 | 1912 | Low | Poor |
| Lula Johnson County | 36 | 1963 | Low | Fair |
| Lyle Johnson County | 37 | 1953 | Low | Poor |
| Lynx Dam Natrona County | 31 | 1956 | Low | Unsatisfactory |
| Mackey Park County | 15 | 2000 | Low | Satisfactory |
| Macumba Stockwater Crook County | 25 | 1964 | Low | Fair |
| Madonna Johnson County | 35 | 1973 | Low | Poor |
| Magoon No. 1 Niobrara County | 25 | 1959 | Low | Fair |
| Mallard #1 Johnson County | 26 | 1999 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.