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 301–325 of 752
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Haywire No. 1 Converse County | 26 | 1986 | Low | Fair |
| Heartbreak Hill Campbell County | 39 | 2007 | Low | Fair |
| Heinrich No. 13 Campbell County | 13 | 2001 | Low | Fair |
| Helen Converse County | 22 | 1966 | Low | Fair |
| Helen Dixon No. 2 Niobrara County | 27 | 1952 | Low | Fair |
| Hermine Natrona County | 12 | 1912 | Low | Fair |
| Herrick Converse County | 30 | 1946 | Low | Fair |
| High Savery Carbon County | 165 | 2003 | High | Fair |
| Highway Johnson County | 34 | 1973 | Low | Fair |
| Hillside Pond Converse County | 40 | 2018 | Low | Fair |
| Hirsig No. 3 Laramie County | 38 | 1975 | Low | Fair |
| Hi-Water Washakie County | 25 | — | Low | Fair |
| 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 No. 2 Flood Control Campbell County | 62 | 2007 | Low | Fair |
| Horse Shoe Sheridan County | 39 | 1983 | Low | Fair |
| Iberlin 43-3-4676 Campbell County | 39 | 2009 | Low | Fair |
| Ikey Big Horn County | 29 | 1965 | Low | Fair |
| Indian Creek No. 1 Converse County | 41 | 1953 | Low | Fair |
| Innes Campbell County | 33 | 1956 | Low | Fair |
| Intercity Wastewater Treatment(Cell 1) Sweetwater County | 10 | 1990 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.