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 |
|---|---|---|---|---|
| Flagstone Washakie County | 27 | 1965 | Low | Fair |
| Flat Campbell County | 10 | 1914 | Low | Fair |
| Flat Creek Ranch Teton County | 11 | 1967 | Low | Fair |
| Fletcher No. 1 Sheridan County | 25 | 1981 | Low | Fair |
| Flockhart Dam Big Horn County | 32 | — | Low | Poor |
| Floyd Campbell County | 25 | 1950 | Low | Fair |
| Fly Ash Disposal Cell B Sweetwater County | 16 | 2003 | Low | Fair |
| Fmc Granger Tailings Pond Phases 1e -1j Sweetwater County | 28 | 2013 | Low | Fair |
| Ford No. 1 Campbell County | 40 | 1960 | Low | Fair |
| Fordyce Deer Creek Sheridan County | 28 | 1954 | Low | Fair |
| Fordyce Tepee No. 1 Sheridan County | 25 | 1964 | Low | Not Rated |
| Fortification Campbell County | 25 | 1956 | Low | Fair |
| Fossil Dam Natrona County | 35 | 1966 | Low | Unsatisfactory |
| Foster No. 1 Dam 1a (2nd Enl.) Park County | 24 | 1953 | Low | Poor |
| Foster No. 1 Dam 1b (2nd Enl.) Park County | 25 | 1953 | Low | Fair |
| Four Mile Johnson County | 18 | 1944 | Low | Fair |
| Fowler Johnson County | 21 | 1956 | Low | Fair |
| Fox Farm Campbell County | 30 | 1957 | Low | Poor |
| Fraizer Diversion Dam #3 Fremont County | 20 | 1949 | Low | Not Rated |
| Franklin Lincoln County | 12 | 1911 | Low | Poor |
| Fred Crook County | 30 | 1963 | Low | Fair |
| Fred Dilts No. 4 Converse County | 26 | 1954 | Low | Fair |
| Fred No. 1 Niobrara County | 31 | 1957 | Low | Poor |
| Freemeth Springs Stock Albany County | 21 | 1976 | Low | Fair |
| Fremont Lake Sublette County | 15 | 1993 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.