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 1–25 of 104
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Wyoming Hereford Ranch No. 2 Laramie County | 31 | 1936 | Significant | Fair |
| Wyoming Hereford Ranch No. 1 Laramie County | 28 | 1930 | Significant | Fair |
| Wyoming Development Company No. 1 Platte County | 49 | 1960 | Significant | Fair |
| Willow Lake Sublette County | 20 | 1955 | Significant | Poor |
| Wheatland No. 2 Albany County | 37 | 1901 | Significant | Fair |
| Weston Sheridan County | 18 | 1913 | Significant | Poor |
| Werner Ranch Site Converse County | 18 | 1982 | Significant | Fair |
| Water Valley Fish & Recreation Carbon County | 15 | 1966 | Significant | Not Rated |
| Wall Development Company Dam Uinta County | 27 | 1949 | Significant | Not Rated |
| Ver Plancke Carbon County | 37 | 1908 | Significant | Fair |
| Upper Rock Creek Fremont County | 101 | 1961 | Significant | Fair |
| Upper Goose Pond Fremont County | 13 | — | Significant | Not Rated |
| Unit 3 Fgd Pond 2 Carbon County | 25 | 1998 | Significant | Fair |
| Turner Reservoir Weston County | 32 | 1993 | Significant | Not Rated |
| Tract 37 Crook County | 31 | 1976 | Significant | Fair |
| Torrington Wastewater Treatment Goshen County | 12 | 1994 | Significant | Fair |
| Texas Gulf Tailings (Phase 1e & 1f Enl.) Sweetwater County | 30 | 1976 | Significant | Fair |
| T.E.C. Natrona County | 48 | 1910 | Significant | Fair |
| Taylor No. 2 Johnson County | 22 | 1987 | Significant | Fair |
| Tank Farm Laramie County | 35 | 1983 | Significant | Fair |
| Swan Laramie County | 25 | 1907 | Significant | Poor |
| Stonebridge Park County | 24 | 1905 | Significant | Fair |
| Spring Creek (Enlargement) Carbon County | 35 | 1921 | Significant | Poor |
| Spencer Weston County | 45 | 1952 | Significant | Poor |
| Sinnard Goshen County | 26 | 1935 | Significant | Fair |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.