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 651–675 of 752
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| T55nr76w31sese Sheridan County | 28 | 1960 | Low | Fair |
| Tabasco Johnson County | 43 | 2006 | Low | Fair |
| Tank Farm Laramie County | 35 | 1983 | Significant | Fair |
| Taylor No. 1 Johnson County | 27 | 1958 | Low | Fair |
| Taylor No. 2 Johnson County | 22 | 1987 | Significant | Fair |
| Taylor Nwsw 21-5783 Sheridan County | 22 | 2002 | Low | Fair |
| T.E.C. Natrona County | 48 | 1910 | Significant | Fair |
| Teckla No. 1 Campbell County | 17 | 1969 | Low | Fair |
| Teton Reservoir Carbon County | 33 | 1966 | High | Fair |
| Texas Gulf Emergency Pond No. 2 Sweetwater County | 26 | 1976 | Low | Fair |
| Texas Gulf Tailings (Phase 1e & 1f Enl.) Sweetwater County | 30 | 1976 | Significant | Fair |
| Thayer No. 1 Park County | 13 | 1935 | Low | Fair |
| The Wall Campbell County | 38 | 2009 | Low | Fair |
| Thompson Niobrara County | 37 | 1950 | Low | Fair |
| Three Forks Weston County | 31 | 1965 | Low | Fair |
| Three Mile Albany County | 18 | 1904 | Low | Fair |
| Tie Hack Johnson County | 110 | 1997 | High | Fair |
| Tisdale No. 3 Campbell County | 30 | 1990 | Low | Fair |
| Toltec Albany County | 60 | 1984 | Low | Fair |
| Tony Campbell County | 50 | 1953 | Low | Fair |
| Tornado Fed 4778-5 Mixed Use 1 Johnson County | 23 | 2023 | Low | Fair |
| Torrington Wastewater Treatment Goshen County | 12 | 1994 | Significant | Fair |
| Tract 37 Crook County | 31 | 1976 | Significant | Fair |
| Tracy Lake Teton County | 20 | 1928 | Low | Fair |
| Trail Creek Park County | 27 | 1952 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.