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 1051–1075 of 1,283
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Snyder Homestead Campbell County | 27 | 1963 | Low | Poor |
| Snyder No. 1 Big Horn County | 21 | 1995 | Low | Fair |
| Snyder No. 2 Big Horn County | 21 | 1994 | Low | Fair |
| Soda Lake Draw No. 1 Albany County | 11 | 1950 | Low | Fair |
| Soda Lake Wetlands Sublette County | 15 | 1989 | Low | Fair |
| Solid Waste Disposal Cell C Sweetwater County | 18 | 2011 | Low | Fair |
| Solid Waste Disposal Cell D Sweetwater County | 46 | 1977 | Low | Fair |
| Solid Waste Disposal Cell F Sweetwater County | 45 | 1978 | Low | Poor |
| Solid Waste Disposal Cell J Sweetwater County | 50 | 2011 | Low | Fair |
| Sonny'S Campbell County | 29 | 2006 | Low | Fair |
| Sore Finger Big Horn County | 24 | 1965 | Low | Fair |
| Sore Paw Washakie County | 26 | 1964 | Low | Fair |
| South Fork Johnson County | 26 | 1973 | Low | Poor |
| South Fork Bud Kimball Washakie County | 25 | — | Low | Fair |
| South Fork Dam Natrona County | 28 | 1964 | Low | Poor |
| South Lodgepole No. 1 Weston County | 18 | 1969 | Low | Poor |
| South Ricketts Flat Johnson County | 48 | 1972 | Low | Fair |
| South Wall Natrona County | 36 | 1912 | Low | Fair |
| South Wall No. 3 Natrona County | 25 | 1951 | Low | Fair |
| S. P. Natrona County | 29 | 1952 | Low | Poor |
| Spearhead Pond #1 Converse County | 31 | 2016 | Low | Fair |
| Spellman B1-27-5475 Campbell County | 40 | 2008 | Low | Fair |
| Spencer No. 2 Weston County | 25 | 1961 | Low | Fair |
| Sphaeralcea Sublette County | 28 | 1974 | Low | Poor |
| Sportsman Lake Albany County | 13 | 1949 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.