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 1–25 of 45
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bolt 31 Reuse Pond Campbell County | 30 | 2022 | Low | Satisfactory |
| Bolt 36 Resuse Pit Campbell County | 18 | 2023 | Low | Satisfactory |
| Buckaroo Freshwater Cell Laramie County | 18 | 2018 | Low | Satisfactory |
| Buckaroo Freshwater Cell Laramie County | 18 | 2018 | Low | Satisfactory |
| Cce 3468-13 Fresh Water # 2 Off Channel Converse County | 34 | 2023 | Low | Satisfactory |
| Clarkelen Disposal Facility Campbell County | 38 | 2018 | Low | Satisfactory |
| Detention 1593 #2 Dam Carbon County | 36 | 1960 | Low | Satisfactory |
| Detention Case Bier No. 1 Goshen County | 59 | 1958 | Low | Satisfactory |
| Detention Pine Ridge No. 1 Goshen County | 56 | 1958 | Low | Satisfactory |
| Dump Draw Johnson County | 42 | 2019 | High | Satisfactory |
| Fgd Effluent Pond #5 Lincoln County | 58 | 2018 | Significant | Satisfactory |
| Hardy No. 1 Converse County | 16 | 1949 | Low | Satisfactory |
| Hubbard 3671-35 Mixed Use #3 Converse County | 20 | 2023 | Low | Satisfactory |
| Hubbard 3671-35 Mixed Use 5 Converse County | 24 | 2023 | Low | Satisfactory |
| Hubbard 3671-35 Mixed Use 6 Converse County | 27 | 2023 | Low | Satisfactory |
| Hubbard 3671-35 Mixed Used #4 Converse County | 21 | 2023 | Low | Satisfactory |
| Jfw Corp 1-21 Water Storage Reservoir Converse County | 30 | 2015 | Low | Satisfactory |
| Jim Bridger Fgd Pond No. 3 Sweetwater County | 37 | 2023 | Significant | Satisfactory |
| Joy No. 1 Converse County | 25 | 1984 | Low | Satisfactory |
| Little Sage Creek Reservoir Carbon County | 26 | 1969 | High | Satisfactory |
| Lower Afton Lincoln County | 30 | 1942 | Low | Satisfactory |
| Mackey Park County | 15 | 2000 | Low | Satisfactory |
| Mbpp Ash Pond Platte County | 25 | 1984 | Low | Satisfactory |
| Mbpp Emergency Holding Pond Platte County | 20 | 1980 | Low | Satisfactory |
| Mcmurry No. 4 Natrona County | 78 | 2014 | High | Satisfactory |
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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.