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 1326–1350 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Tommy Tucker Dam Big Horn County | 26 | — | Low | Not Rated |
| Tony Campbell County | 50 | 1953 | Low | Fair |
| Toothaker Carbon County | 35 | 1967 | Low | Poor |
| Tornado Fed 4778-5 Mixed Use 1 Johnson County | 23 | 2023 | Low | Fair |
| Torrington Wastewater Treatment Goshen County | 12 | 1994 | Significant | Fair |
| Total Station Johnson County | 33 | 2007 | Low | Poor |
| Trabing Johnson County | 28 | 1971 | Low | Poor |
| Tract 37 Crook County | 31 | 1976 | Significant | Fair |
| Tracy Lake Teton County | 20 | 1928 | Low | Fair |
| Trail Creek Park County | 27 | 1952 | Low | Fair |
| Trail Lake Control Dam Fremont County | 7 | 1947 | Low | Poor |
| Trail Lake Storage Dam Fremont County | 11 | 1947 | Low | Poor |
| Trail No. 1 Converse County | 31 | 1955 | Low | Poor |
| Trail Unit Evapaoration Facilty Sweetwater County | 19 | 2014 | Low | Fair |
| Treichler & Parsons Sheridan County | 27 | 1895 | Low | Poor |
| T & T Enlargement of Driskill Crook County | 31 | 1954 | Low | Fair |
| Turkey Springs Natrona County | 29 | 1914 | Low | Fair |
| Turner No. 1 Niobrara County | 19 | 1969 | Low | Poor |
| Turner Reservoir Weston County | 32 | 1993 | Significant | Not Rated |
| Turner & Swank Sheridan County | 30 | 1911 | Low | Fair |
| Twiford Platte County | 35 | 1944 | Low | Poor |
| Twin Buttes Albany County | 8 | 1972 | Low | Fair |
| Twin Forks Weston County | 42 | 1959 | Low | Poor |
| Twin Lakes No. 1 Sheridan County | 91 | 1998 | High | Not Rated |
| Twin No. 1 Johnson County | 47 | 1957 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.