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 |
|---|---|---|---|---|
| Badura No. 1 Park County | 21 | 1964 | Low | Poor |
| Bad Land No. 2 Niobrara County | 24 | 1965 | Low | Poor |
| Bad Land No. 1 Niobrara County | 18 | 1962 | Low | Poor |
| Austin No. 1 Johnson County | 22 | 1991 | Low | Poor |
| Arrowhead Crook County | 23 | 1956 | Low | Poor |
| Antwerp Sheridan County | 20 | 1902 | Low | Poor |
| Angle Detention Dam Park County | 30 | — | Low | Poor |
| Anderson No. 1 Niobrara County | 26 | 1959 | Low | Poor |
| Anderson Carbon County | 28 | 1931 | Low | Poor |
| Amelia No. 1 Niobrara County | 29 | 1961 | Low | Poor |
| Alvie No. 1 Albany County | 38 | 1974 | Low | Poor |
| Allen Sheridan County | 35 | 1955 | Low | Poor |
| Allee Campbell County | 7 | 1978 | Low | Poor |
| Alkali Creek Park County | 36 | 1950 | Low | Poor |
| Albert Wardell No. 1 Big Horn County | 35 | 1973 | Low | Poor |
| Agnes Natrona County | 26 | 1952 | Low | Poor |
| Adams #2 Hot Springs County | 28 | 1918 | Low | Poor |
| 2nd Enl. Guild & Dean Uinta County | 40 | 2001 | 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.