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 1326–1350 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Brewer Natrona County | 29 | 1943 | Low | Poor |
| Brenner Niobrara County | 27 | 1975 | Low | Poor |
| Brannan No. 2 Sweetwater County | 8 | 1937 | Low | Poor |
| Brad Reese Water Impoundment Reservoir Converse County | 18 | 2019 | Low | Fair |
| Bradley Niobrara County | 31 | 1914 | Low | Fair |
| Bracket No. 3 Sheridan County | 29 | 1973 | Low | Poor |
| Boysen Dam Fremont County | 220 | 1952 | High | Not Available |
| Boyken No. 2 Campbell County | 33 | 1966 | Low | Fair |
| Box Elder Draw Stock Sheridan County | 20 | 1988 | Low | Poor |
| Bowman No.1 Johnson County | 28 | 2004 | Low | Fair |
| Bow & Arrow 4-25 Campbell County | 49 | 1972 | Low | Poor |
| Boulter Sublette County | 21 | 1956 | Low | Fair |
| Boulder Lane Johnson County | 34 | 2007 | Low | Fair |
| Boulder Lake Sublette County | 25 | 1964 | Significant | Not Rated |
| Bosler Carbon County | 18 | 1955 | Low | Poor |
| Boon Campbell County | 32 | 2004 | Low | Poor |
| Bonneville Reservoir Fremont County | 26 | 1941 | Low | Poor |
| Bonneville Fremont County | 40 | 1914 | Low | Poor |
| Bolt 36 Resuse Pit Campbell County | 18 | 2023 | Low | Satisfactory |
| Bolt 31 Reuse Pond Campbell County | 30 | 2022 | Low | Satisfactory |
| Boggy Niobrara County | 32 | 1951 | Low | Poor |
| Boerner Converse County | 26 | 1986 | Low | Poor |
| Boelte No. 1 Sublette County | 32 | 2003 | Low | Fair |
| Bob'S Sport Fishing Carbon County | 24 | 1975 | Low | Poor |
| Bob Johnson County | 33 | 1959 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.