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 976–1000 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Patch Johnson County | 44 | 1958 | Low | Poor |
| Paterson Lake Uinta County | 14 | 1907 | Significant | Poor |
| Pathfinder Dam Natrona County | 214 | 1909 | High | Not Available |
| Pathfinder Dike Natrona County | 38 | 1911 | High | Not Available |
| Patra No. 3 Campbell County | 24 | 1925 | Low | Poor |
| Patrick Ryan No. 3 Albany County | 27 | 1970 | Low | Poor |
| Paul Carbon County | 20 | 1953 | Low | Poor |
| Paul No. 3 Sheridan County | 22 | 1952 | Low | Poor |
| Pavlovich Campbell County | 16 | 1953 | Low | Fair |
| Paxton Crook County | 27 | 1959 | Low | Poor |
| Pence Sheridan County | 28 | 1954 | Low | Poor |
| Perkins Big Horn County | 25 | 1964 | Low | Poor |
| Perkins & Kinney Park County | 35 | 1923 | Low | Poor |
| Peterson Area-Ocean Lake Habitat Unit Dam Fremont County | 14 | 1993 | Low | Not Available |
| Peter Widener Pond Park County | 33 | 1998 | Low | Not Rated |
| Petro No. 1 Dam Natrona County | 27 | 1999 | Low | Fair |
| Pexton No. 1 Converse County | 40 | 1963 | Low | Fair |
| Pfister No. 2 Niobrara County | 22 | 1952 | Low | Fair |
| Phelps Platte County | 28 | 1911 | Low | Poor |
| Phil Crook County | 21 | 1968 | Low | Fair |
| Phillip Lincoln County | 27 | 1953 | Low | Poor |
| Phillips No. 1 Albany County | 28 | 1953 | Low | Poor |
| Phil No. 1 Niobrara County | 36 | 1966 | Low | Fair |
| Phil No. 2 Johnson County | 27 | 1967 | Low | Fair |
| Phipps No. 1 Big Horn County | 15 | 1999 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.