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 126–150 of 543
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Rucki Sheridan County | 28 | 1976 | Low | Poor |
| Router No. 11 Johnson County | 35 | 2007 | Low | Poor |
| Roundup Draw Stock Sheridan County | 26 | 1935 | Low | Poor |
| Rongis Detention Dam Fremont County | 29 | 1952 | Low | Poor |
| Rocky Gulch Stock Campbell County | 23 | 1967 | Low | Poor |
| Rocky Ford Crook County | 36 | 1958 | Low | Poor |
| Roberts Sheridan County | 25 | 1952 | Low | Poor |
| Richey Lincoln County | 25 | 1917 | Low | Poor |
| Reynolds No. 2 Natrona County | 16 | 1909 | Low | Poor |
| Reese No. 5 Converse County | 28 | 1972 | Low | Poor |
| Red Cloud No.1 Goshen County | 18 | 1956 | Low | Poor |
| Red Bluff Dam Natrona County | 38 | 1954 | Low | Poor |
| Red Arrow Storage Crook County | 21 | 1962 | Low | Poor |
| Ray Detention Dam Washakie County | 27 | 2003 | Low | Poor |
| Rathbun Irrigation No. 1 Hot Springs County | 29 | 1956 | Low | Poor |
| Rate & Huson Sheridan County | 22 | 1910 | Low | Poor |
| Ramsbottom Johnson County | 34 | 1970 | Low | Poor |
| Rainey Albany County | 10 | 1922 | Low | Poor |
| Rachou Fremont County | 25 | 1940 | Low | Poor |
| Q-P Lincoln County | 26 | 1914 | Low | Poor |
| Pyramid Dam Washakie County | 30 | 2003 | Low | Poor |
| Puff Johnson County | 30 | 1976 | Low | Poor |
| Prospect No. 1 Sublette County | 20 | 1914 | Low | Poor |
| Prince No.1 Park County | 19 | 1993 | Significant | Poor |
| Prairie Fremont County | 17 | 1915 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.