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 526–543 of 543
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| White No. 2 Campbell County | 14 | 1961 | Low | Poor |
| Wiant Dam No. 1 Carbon County | 19 | 1953 | Low | Poor |
| Wiant Dam No. 2 Carbon County | 10 | 1953 | Low | Poor |
| Widener Sheridan County | 25 | 1997 | Low | Poor |
| Wildcat No. 3 Niobrara County | 35 | 1959 | Low | Poor |
| Wiley Park County | 31 | 1971 | Low | Poor |
| Wilks Detention Campbell County | 41 | 1962 | Low | Poor |
| Williams Niobrara County | 27 | 1960 | Low | Poor |
| Williams Crook County | 30 | 1957 | Low | Poor |
| Williams No. 2 Sublette County | 14 | 1917 | Low | Poor |
| Williams No. 2 Albany County | 33 | 1963 | Low | Poor |
| Willow Lake Sublette County | 20 | 1955 | Significant | Poor |
| Windmill No. 1 Niobrara County | 50 | 1956 | Low | Poor |
| Wintermote No. 1 Converse County | 21 | 1969 | Low | Poor |
| W.R. Hamilton No. 2 Converse County | 20 | 1917 | Low | Poor |
| Zemba Sublette County | 16 | 1915 | Low | Poor |
| Zezas Johnson County | 25 | 1958 | Low | Poor |
| Zezas Irrigation Johnson County | 43 | 1973 | Low | Poor |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.