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 1126–1150 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Dull Knife Johnson County | 80 | 1966 | High | Fair |
| Dull Converse County | 29 | 1937 | Low | Fair |
| Duck Pond No. 5 Carbon County | 13 | 2004 | Low | Poor |
| Duck Nest Reservoir Campbell County | 22 | 1998 | Low | Fair |
| Duck Creek No. 1 Albany County | 36 | 1951 | Low | Poor |
| Dry Poison Irrigation Johnson County | 36 | 1970 | Low | Poor |
| Dry Muddy Natrona County | 19 | 1933 | Low | Poor |
| Dry Creek No. 1 Converse County | 31 | 1967 | Low | Fair |
| Dry Creek Johnson County | 25 | 1958 | Low | Poor |
| Driskill No. 1 Crook County | 28 | 1984 | Low | Fair |
| Dresher Campbell County | 25 | 1940 | Low | Fair |
| Doyen Johnson County | 25 | 1956 | Low | Poor |
| Douglas Fishing Lake No. 1 Converse County | 28 | 1954 | Significant | Unsatisfactory |
| Double Wide Sheridan County | 32 | 2004 | Low | Fair |
| Double L Platte County | 26 | 1965 | Low | Not Rated |
| Donna Campbell County | 31 | 1956 | Low | Poor |
| Donlin Detention Dam Natrona County | 34 | 1955 | Low | Fair |
| Donaldson Johnson County | 27 | 1970 | Low | Fair |
| Donahue Laramie County | 20 | 1953 | Low | Poor |
| Dome Lake No. 1 Sheridan County | 30 | 1969 | High | Fair |
| Dome Lake Sheridan County | 8 | 1906 | Low | Fair |
| Dolores No. 1 Niobrara County | 27 | 1953 | Low | Fair |
| Dogie No. 3 Niobrara County | 30 | 1952 | Low | Fair |
| Dodd Sheridan County | 23 | 1952 | Low | Poor |
| Doby No. 3 Albany County | 41 | 1984 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.