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 543
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Werner Converse County | 22 | 1950 | Low | Poor |
| Weir Pond Sheridan County | 8 | 1969 | Low | Poor |
| Weaver Albany County | 29 | 1972 | Low | Poor |
| Waterworks No. 3 Fremont County | 40 | 1959 | Low | Poor |
| Warriner No. 1 Sheridan County | 19 | 1923 | Low | Poor |
| Warner No. 2 Converse County | 23 | 1952 | Low | Poor |
| Warner No. 1 Converse County | 17 | 1951 | Low | Poor |
| Walters Big Horn County | 26 | 1978 | Low | Poor |
| Wallace No. 2 Niobrara County | 20 | 1958 | Low | Poor |
| Wales Hot Springs County | 13 | 1912 | Low | Poor |
| Wagner Natrona County | 9 | 1909 | Low | Poor |
| Verona Sheridan County | 55 | 1908 | Low | Poor |
| V. E. Lissolo Irrigation Weston County | 30 | 1955 | Low | Poor |
| Valarie Irrigation Campbell County | 31 | 1962 | Low | Poor |
| Upper Van Tassell Laramie County | 98 | 1932 | High | Poor |
| Upper Washakie County | 15 | 1922 | Low | Poor |
| Two Wash Detention Washakie County | 37 | 2003 | Low | Poor |
| Twin No. 1 Johnson County | 47 | 1957 | Low | Poor |
| Twin Forks Weston County | 42 | 1959 | Low | Poor |
| Twiford Platte County | 35 | 1944 | Low | Poor |
| Turner No. 1 Niobrara County | 19 | 1969 | Low | Poor |
| Treichler & Parsons Sheridan County | 27 | 1895 | Low | Poor |
| Trail No. 1 Converse County | 31 | 1955 | Low | Poor |
| Trail Lake Storage Dam Fremont County | 11 | 1947 | Low | Poor |
| Trail Lake Control Dam Fremont County | 7 | 1947 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.