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 501–525 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Gillette Fishing Lake Campbell County | 15 | 1962 | Low | Poor |
| Gill No. 5 Stock Sheridan County | 30 | — | Low | Poor |
| G-K Natrona County | 23 | 1963 | Low | Fair |
| Gleason Reservoir No. 2 Laramie County | 21 | 1909 | Low | Poor |
| Glendo Dam Platte County | 196 | 1958 | High | Not Available |
| Glendo Dike 1 Platte County | 50 | 1959 | High | Not Available |
| Glendo Dike 2 Platte County | 63 | 1959 | High | Not Available |
| Glendo Dike 3 Platte County | 94 | 1959 | High | Not Available |
| Glen Means Johnson County | 34 | 1992 | Low | Fair |
| Glowmill Goshen County | 17 | 1976 | Significant | Poor |
| Goble No. 2 Johnson County | 25 | 1972 | Low | Poor |
| Golden Clover No. 1 Carbon County | 27 | 1960 | Low | Poor |
| Golden Eagle Campbell County | 33 | 2000 | Low | Poor |
| Good No. 1 Carbon County | 20 | 1951 | Low | Fair |
| Gorman No. 2 Sheridan County | 33 | 1963 | Low | Fair |
| Gose Crook County | 31 | 1977 | Low | Fair |
| Goshen Hole Goshen County | 26 | 1957 | Significant | Poor |
| Goshen No. 1 Goshen County | 17 | 1924 | Significant | Poor |
| Goshen No. 2 Goshen County | 12 | 1924 | Significant | Poor |
| Gothberg Natrona County | 13 | 1908 | Significant | Poor |
| Government No. 1 Stock Johnson County | 30 | 1962 | Low | Poor |
| Graham Uinta County | 33 | 1945 | Low | Poor |
| Grandy Fremont County | 18 | 1957 | Significant | Fair |
| Granite Springs Laramie County | 90 | 1904 | High | Fair |
| Grant Creek Albany County | 25 | 1912 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.