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 1,283
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Windmill No. 1 Niobrara County | 50 | 1956 | Low | Poor |
| Windmill No. 1 Campbell County | 38 | 2008 | Low | Fair |
| Wilson No. 1 Converse County | 25 | 1977 | Low | Fair |
| Willwood Diversion Dam Park County | 70 | 1924 | Low | Not Available |
| Willow Glenn Johnson County | 30 | 1959 | Low | Fair |
| Will No. 1 Johnson County | 30 | 1991 | Low | Fair |
| Willits Johnson County | 22 | 1940 | Low | Fair |
| Williams No. 3 Albany County | 28 | 1969 | Low | Fair |
| Williams No. 2 Albany County | 33 | 1963 | Low | Poor |
| Williams No. 2 Sublette County | 14 | 1917 | Low | Poor |
| Williams & Blunk No. 1 Albany County | 27 | 1973 | Low | Fair |
| Williams Niobrara County | 27 | 1960 | Low | Poor |
| Williams Crook County | 30 | 1957 | Low | Poor |
| Will Johnson County | 33 | 2008 | Low | Fair |
| Wilks Detention Campbell County | 41 | 1962 | Low | Poor |
| Wiley Park County | 31 | 1971 | Low | Poor |
| Wildcat No. 3 Niobrara County | 35 | 1959 | Low | Poor |
| Wildcat No. 2 Niobrara County | 35 | 1955 | Low | Fair |
| Wildcat No. 1 Niobrara County | 40 | 1953 | Low | Fair |
| Widener Sheridan County | 25 | 1997 | Low | Poor |
| Wiant Dam No. 2 Carbon County | 10 | 1953 | Low | Poor |
| Wiant Dam No. 1 Carbon County | 19 | 1953 | Low | Poor |
| White No. 2 Campbell County | 14 | 1961 | Low | Poor |
| White Big Horn County | 20 | 1914 | Low | Poor |
| White Carbon County | 31 | 1971 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.