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 876–900 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hog Park Saddle Dam No. 1 Carbon County | 26 | 1986 | High | Not Rated |
| Hog Park Main Dam Carbon County | 118 | 1986 | High | Not Rated |
| Hoblit Niobrara County | 15 | 1972 | Low | Poor |
| H. L. Reservoir Crook County | 15 | 1972 | Low | Not Rated |
| Hi-Water Washakie County | 25 | — | Low | Fair |
| Hiser Natrona County | 35 | 2005 | Low | Poor |
| Hirsig No. 4 Laramie County | 32 | 1974 | Low | Poor |
| Hirsig No. 3 Laramie County | 38 | 1975 | Low | Fair |
| Hirsig No. 2 Laramie County | 28 | 1960 | Low | Poor |
| Hirsig No. 1 Laramie County | 28 | 1954 | Low | Poor |
| Hirsig Enl. of R. P. Allen No. 1 Laramie County | 25 | 1975 | Low | Not Rated |
| Hillside Pond Converse County | 40 | 2018 | Low | Fair |
| Hillberry Washakie County | 26 | 1947 | Low | Poor |
| Hill Campbell County | 16 | 1944 | Low | Poor |
| Highway Johnson County | 34 | 1973 | Low | Fair |
| High Savery Carbon County | 165 | 2003 | High | Fair |
| Higgins No. 2 Converse County | 20 | 1908 | Low | Poor |
| Higgins No. 1 Converse County | 26 | 1911 | Low | Poor |
| Hickey Uinta County | 27 | 1980 | Low | Poor |
| Hewes No. 1 Crook County | 15 | 1986 | Low | Poor |
| Herrick Converse County | 30 | 1946 | Low | Fair |
| Hermine Natrona County | 12 | 1912 | Low | Fair |
| Hepp Johnson County | 22 | 1964 | Low | Poor |
| Henry No. 1 Stock Johnson County | 28 | 1967 | Low | Poor |
| Henry Johnson County | 30 | 1960 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.