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 301–325 of 1,283
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Rule Wetland North Johnson County | 23 | 2001 | Low | Fair |
| Ruff Detention Dam Park County | 46 | 2003 | Low | Unsatisfactory |
| Rucki Sheridan County | 28 | 1976 | Low | Poor |
| Router No. 49 Johnson County | 42 | 2006 | Low | Fair |
| Router No. 11 Johnson County | 35 | 2007 | Low | Poor |
| Roundup Draw Stock Sheridan County | 26 | 1935 | Low | Poor |
| Rough Ride Johnson County | 38 | 2007 | Low | Fair |
| Rough Draw Weston County | 33 | 1992 | Low | Not Rated |
| Ross Recovery Cell 8 Converse County | 40 | 2019 | Low | Fair |
| Ross Recovery Cell 7 Converse County | 56 | 2016 | Low | Fair |
| Ross Recovery Cell 6 Converse County | 33 | 2014 | Low | Fair |
| Ross Dam Washakie County | 28 | 2003 | Low | Not Rated |
| Rosean Weston County | 23 | 1955 | Low | Fair |
| Rongis Detention Dam Fremont County | 29 | 1952 | Low | Poor |
| Roger'S Folly No. 2 Johnson County | 20 | 1964 | Low | Fair |
| Roda Baugh Weston County | 25 | 1940 | Low | Fair |
| Rocky Gulch Stock Campbell County | 23 | 1967 | Low | Poor |
| Rocky Ford Crook County | 36 | 1958 | Low | Poor |
| Rock Water Hole Detention Dam Washakie County | 36 | 2003 | Low | Unsatisfactory |
| Rock Lake Platte County | 15 | 1930 | Low | Fair |
| Rock Fremont County | 30 | 1978 | Low | Fair |
| Robinson Sheridan County | 28 | 1956 | Low | Fair |
| Robertson Johnson County | 28 | 1970 | Low | Fair |
| Roberts Luman Draw Sheridan County | 28 | 1964 | Low | Fair |
| Roberts Sheridan County | 25 | 1952 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.