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 401–425 of 1,283
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Poison Creek No. 1 Johnson County | 30 | 1999 | Low | Poor |
| Point of Rocks Carbon County | 8 | 1908 | Low | Poor |
| Point of Rocks Albany County | 28 | 1975 | Low | Poor |
| Plum Tree Campbell County | 36 | 1955 | Low | Fair |
| Pk 9-17 Johnson County | 35 | 2007 | Low | Fair |
| Pissolio No. 1 Weston County | 45 | 1909 | Low | Poor |
| Pinto Albany County | 25 | 1961 | Low | Poor |
| Pine Dale Johnson County | 15 | 1940 | Low | Poor |
| Pine Creek Carbon County | 30 | 1987 | Low | Fair |
| Pine Cone No. 2 Carbon County | 39 | 1977 | Low | Poor |
| Pine Cone No. 1 Carbon County | 30 | 1976 | Low | Poor |
| Pine Bluffs Wastewater Treatment Laramie County | 14 | 1987 | Low | Fair |
| Pilch 14-2 Pit Sheridan County | 26 | 2003 | Low | Fair |
| Piedmont Uinta County | 34 | 1902 | Low | Poor |
| Phipps No. 1 Big Horn County | 15 | 1999 | Low | Fair |
| Phil No. 2 Johnson County | 27 | 1967 | Low | Fair |
| Phil No. 1 Niobrara County | 36 | 1966 | Low | Fair |
| Phillips No. 1 Albany County | 28 | 1953 | Low | Poor |
| Phillip Lincoln County | 27 | 1953 | Low | Poor |
| Phil Crook County | 21 | 1968 | Low | Fair |
| Phelps Platte County | 28 | 1911 | Low | Poor |
| Pfister No. 2 Niobrara County | 22 | 1952 | Low | Fair |
| Pexton No. 1 Converse County | 40 | 1963 | Low | Fair |
| Petro No. 1 Dam Natrona County | 27 | 1999 | Low | Fair |
| Peter Widener Pond Park County | 33 | 1998 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.