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 151–175 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Treichler & Parsons Sheridan County | 27 | 1895 | Low | Poor |
| Trail Unit Evapaoration Facilty Sweetwater County | 19 | 2014 | Low | Fair |
| Trail No. 1 Converse County | 31 | 1955 | Low | Poor |
| Trail Lake Storage Dam Fremont County | 11 | 1947 | Low | Poor |
| Trail Lake Control Dam Fremont County | 7 | 1947 | Low | Poor |
| Trail Creek Park County | 27 | 1952 | Low | Fair |
| Tracy Lake Teton County | 20 | 1928 | Low | Fair |
| Tract 37 Crook County | 31 | 1976 | Significant | Fair |
| Trabing Johnson County | 28 | 1971 | Low | Poor |
| Total Station Johnson County | 33 | 2007 | Low | Poor |
| Torrington Wastewater Treatment Goshen County | 12 | 1994 | Significant | Fair |
| Tornado Fed 4778-5 Mixed Use 1 Johnson County | 23 | 2023 | Low | Fair |
| Toothaker Carbon County | 35 | 1967 | Low | Poor |
| Tony Campbell County | 50 | 1953 | Low | Fair |
| Tommy Tucker Dam Big Horn County | 26 | — | Low | Not Rated |
| Toltec Albany County | 60 | 1984 | Low | Fair |
| T. L. Crook County | 27 | 1970 | Low | Poor |
| Tisdale No. 3 Campbell County | 30 | 1990 | Low | Fair |
| Tipperary Uinta County | 24 | 1928 | Low | Poor |
| Tim White Wetlands Carbon County | 11 | 1994 | Low | Poor |
| Tillard 38-72-31 Off Channel Reservoir #4 Converse County | 30 | 2023 | Low | Satisfactory |
| Tie Hack Johnson County | 110 | 1997 | High | Fair |
| Tibbs Campbell County | 30 | 1968 | Low | Poor |
| Thunder Basin No. 95 Campbell County | 28 | 1937 | Low | Not Rated |
| Thunder Basin No 9 Weston County | 21 | 1937 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.