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 526–550 of 1,283
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hirsig Enl. of R. P. Allen No. 1 Laramie County | 25 | 1975 | Low | Not Rated |
| Hirsig No. 1 Laramie County | 28 | 1954 | Low | Poor |
| Hirsig No. 2 Laramie County | 28 | 1960 | Low | Poor |
| Hirsig No. 3 Laramie County | 38 | 1975 | Low | Fair |
| Hirsig No. 4 Laramie County | 32 | 1974 | Low | Poor |
| Hiser Natrona County | 35 | 2005 | Low | Poor |
| Hi-Water Washakie County | 25 | — | Low | Fair |
| H. L. Reservoir Crook County | 15 | 1972 | Low | Not Rated |
| Hoblit Niobrara County | 15 | 1972 | Low | Poor |
| Holland Washakie County | 25 | 1960 | Low | Poor |
| Home Albany County | 20 | 1941 | Low | Poor |
| Homestead Flat Detention Dam Fremont County | 24 | — | Low | Poor |
| Horn Johnson County | 45 | 1956 | Low | Fair |
| Hornbuckle Cofwd Ponds D & E Converse County | 29 | 2020 | Low | Fair |
| Hornbuckle No. 1 Converse County | 19 | 1970 | Low | Fair |
| Horn Creek Johnson County | 37 | 1956 | Low | Fair |
| Horn & Meason Carbon County | 18 | 1920 | Low | Fair |
| Horsch Stockwater Natrona County | 30 | 1952 | Low | Fair |
| Horse Creek Park County | 29 | 1973 | Low | Poor |
| Horse Creek No. 2 Flood Control Campbell County | 62 | 2007 | Low | Fair |
| Horseshoe Big Horn County | 30 | 1969 | Low | Poor |
| Horse Shoe Sheridan County | 39 | 1983 | Low | Fair |
| Horsley Draw Stock Sheridan County | 23 | 1939 | Low | Poor |
| House Weston County | 22 | 1970 | Low | Poor |
| Houston Crook County | 22 | 1966 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.