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 51–75 of 104
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| North Crow Diversion Laramie County | 46 | 1910 | Significant | Fair |
| Nicolaysen Natrona County | 22 | 1899 | Significant | Fair |
| Myers Uinta County | 43 | 1954 | Significant | Poor |
| Muddy Guard No. 2 North Dam Johnson County | 102 | 1976 | Significant | Fair |
| Mcfarland No. 3 Natrona County | 21 | 1911 | Significant | Poor |
| Martin Johnson County | 43 | 1910 | Significant | Fair |
| Markham Park County | 11 | 1929 | Significant | Fair |
| Lower Spicer Natrona County | 17 | 1951 | Significant | Poor |
| Lower Snake Draw (4th Enl.) Sweetwater County | 85 | 1998 | Significant | Fair |
| Lower Morgan Campbell County | 88 | 2001 | Significant | Not Rated |
| Little Boxelder No. 1 Converse County | 54 | 1971 | Significant | Poor |
| Lake Hattie Albany County | 43 | 1912 | Significant | Fair |
| Kruger Creek Crook County | 30 | 1976 | Significant | Fair |
| Kingsbury Todd No. 2 Johnson County | 32 | 1917 | Significant | Fair |
| Kingsbury Todd No. 1 Johnson County | 37 | 1913 | Significant | Poor |
| Kelly Johnson County | 26 | 1973 | Significant | Poor |
| Jim Bridger Power Plant Surge Pond Sweetwater County | 97 | 1989 | Significant | Fair |
| Jim Bridger Fgd Spent Liquor Pond No. 2 Sweetwater County | 46 | 1990 | Significant | Fair |
| Jim Bridger Fgd Pond No. 3 Sweetwater County | 37 | 2023 | Significant | Satisfactory |
| Harrington Big Horn County | 30 | 1974 | Significant | Poor |
| Gunst Carbon County | 24 | 1926 | Significant | Poor |
| Greybull Sewage Treatment Lagoon Big Horn County | 8 | 1960 | Significant | Fair |
| Grandy Fremont County | 18 | 1957 | Significant | Fair |
| Gothberg Natrona County | 13 | 1908 | Significant | Poor |
| Goshen No. 2 Goshen County | 12 | 1924 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.