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 1226–1250 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| 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 Spring Creek Lake Carbon County | 33 | 1917 | High | 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 Weston County | 45 | 1952 | Significant | Poor |
| Spencer No. 2 Weston County | 25 | 1961 | Low | Fair |
| Sphaeralcea Sublette County | 28 | 1974 | Low | Poor |
| Sportsman Lake Albany County | 13 | 1949 | Low | Fair |
| Spring Canyon Goshen County | 58 | 1979 | High | Fair |
| Spring Creek (Enlargement) Carbon County | 35 | 1921 | Significant | Poor |
| Spring Creek No. 1 Platte County | 30 | 1954 | Low | Poor |
| Spring Draw Weston County | 25 | 1959 | Low | Poor |
| Spring Lake Carbon County | 21 | 1970 | Low | Fair |
| Squirrel Tail Dam Hot Springs County | 29 | 2003 | Low | Satisfactory |
| Sr. No. 22-14a Weston County | 13 | 1989 | Low | Fair |
| State Weston County | 17 | 1953 | Low | Poor |
| Steffensen Johnson County | 44 | 1950 | Low | Poor |
| Steffenson No. 2 Johnson County | 41 | 1971 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.