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 701–725 of 752
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Walker Niobrara County | 21 | 1972 | Low | Fair |
| Walters Johnson County | 35 | 1952 | Low | Fair |
| Wamsutter Wastewater Sweetwater County | 8 | 1979 | Low | Fair |
| Ward Ball Sublette County | 22 | 1965 | Low | Fair |
| Warriner No. 2 Sheridan County | 30 | 1941 | Low | Fair |
| Wasatch - First Enlargement Sweetwater County | 31 | 1938 | Low | Fair |
| Washington Memorial Crook County | 24 | 1987 | High | Fair |
| Water Storage Niobrara County | 30 | 1939 | Low | Fair |
| Watt Brothers No. 2 Weston County | 20 | 1954 | Low | Fair |
| Wee Wee Laramie County | 32 | 1991 | Low | Fair |
| Wellbaum Albany County | 30 | 1962 | Low | Fair |
| Wenande No. F.S. 9-117-2 Campbell County | 24 | 1968 | Low | Fair |
| Werner Ranch Site Converse County | 18 | 1982 | Significant | Fair |
| West Johnson County | 31 | 1962 | Low | Fair |
| West Antelope 58-80-27-05 Sheridan County | 27 | 2006 | Low | Fair |
| Western Gas Resources No. 8 Johnson County | 50 | 2004 | Low | Fair |
| Westside Campbell County | 23 | 2012 | High | Fair |
| West Side No. 4 Converse County | 23 | 1946 | Low | Fair |
| Wetlands No. 6 Big Horn County | 9 | 1993 | Low | Fair |
| Wheatland No. 2 Albany County | 37 | 1901 | Significant | Fair |
| Wheatland Wastewater Lagoon 1 Platte County | 20 | 2009 | Low | Fair |
| Wheatland Waste Water Lagoon 2 Platte County | 18 | 2009 | Low | Fair |
| White Carbon County | 31 | 1971 | Low | Fair |
| Wildcat No. 1 Niobrara County | 40 | 1953 | Low | Fair |
| Wildcat No. 2 Niobrara County | 35 | 1955 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.