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 100
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Adelaide Big Horn County | 74 | 1990 | High | Not Rated |
| Alcova Dam Natrona County | 265 | 1938 | High | Not Available |
| Anchor Dam Hot Springs County | 208 | 1960 | High | Not Available |
| Badwater Creek Dam Natrona County | 15 | — | High | Poor |
| Bear Claw Love No. 1 Sheridan County | 53 | 1966 | High | Fair |
| Big Goose Park (3rd Enl.) Sheridan County | 95 | 1958 | High | Fair |
| Big Horn Dike A Johnson County | 45 | 1964 | High | Fair |
| Big Horn Dike B Johnson County | 50 | 1964 | High | Fair |
| Big Horn Dike C Johnson County | 50 | 1964 | High | Fair |
| Big Sandy Dam Sweetwater County | 85 | 1952 | High | Not Available |
| Big Sandy Dike Sweetwater County | 22 | 1952 | High | Not Available |
| Boysen Dam Fremont County | 220 | 1952 | High | Not Available |
| Broadbent Enlargement of Heber Uinta County | 57 | 1986 | High | Not Rated |
| Buffalo Bill Dam Park County | 350 | 1910 | High | Not Available |
| Buffalo Bill-Diamond Creek Dike Park County | 136 | 1905 | High | Not Available |
| Bull Lake Dam Fremont County | 81 | 1938 | High | Not Available |
| Cardine Keith Natrona County | 45 | 1975 | High | Poor |
| Carey Detention Laramie County | 22 | 1984 | High | Fair |
| Cloud Peak Johnson County | 36 | 1958 | High | Fair |
| Cook Lake Crook County | 40 | 1963 | High | Not Rated |
| Corral Park County | 52 | 1983 | High | Fair |
| Cow Creek Lake Carbon County | 28 | 1941 | High | Fair |
| Crystal Lake Laramie County | 108 | 1922 | High | Fair |
| Dome Lake No. 1 Sheridan County | 30 | 1969 | High | Fair |
| Dull Knife Johnson County | 80 | 1966 | High | Fair |
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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.