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 676–700 of 752
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Trail Unit Evapaoration Facilty Sweetwater County | 19 | 2014 | Low | Fair |
| T & T Enlargement of Driskill Crook County | 31 | 1954 | Low | Fair |
| Turkey Springs Natrona County | 29 | 1914 | Low | Fair |
| Turner & Swank Sheridan County | 30 | 1911 | Low | Fair |
| Twin Buttes Albany County | 8 | 1972 | Low | Fair |
| Two Bar No. 1 Albany County | 36 | 1974 | Low | Fair |
| Uhl Teton County | 20 | 1948 | Low | Fair |
| Ulman No. 1 Laramie County | 22 | 1970 | Low | Fair |
| Unit 3 Ash and Clear Water Lincoln County | 61 | 1994 | Low | Fair |
| Unit 3 Fgd Evaporation Pond 1 Lincoln County | 40 | 1990 | Low | Fair |
| Unit 3 Fgd Pond 2 Carbon County | 25 | 1998 | Significant | Fair |
| Units 1 and 2 Ash and Clear Water Lincoln County | 88 | 1994 | Low | Fair |
| Upper Delta (North Offset Dam & West Offset Dam) Sweetwater County | 40 | 2013 | High | Fair |
| Upper North Tisdale No. 1 Campbell County | 17 | 1999 | Low | Fair |
| Upper Rock Creek Fremont County | 101 | 1961 | Significant | Fair |
| Upper Sunshine Park County | 160 | 1942 | High | Fair |
| Upton Weston County | 30 | 1907 | Low | Fair |
| Upton-Osage No. F.S. 9-498-33 Weston County | 24 | 1973 | Low | Fair |
| Upton Wastewater Treatment Weston County | 9 | 1985 | Low | Fair |
| Utter Platte County | 30 | 1972 | Low | Fair |
| Ver Plancke Carbon County | 37 | 1908 | Significant | Fair |
| Viva Naughton Lincoln County | 90 | 1967 | High | Fair |
| Wagner Sheridan County | 58 | 1973 | High | Fair |
| Wagon Hound Converse County | 30 | 1946 | Low | Fair |
| Wagon Prong Dam Washakie County | 36 | 2003 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.