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 1351–1375 of 1,490
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Blue Ridge Detention Big Horn County | 31 | 1961 | Low | Poor |
| Blue No. 1 Sweetwater County | 50 | 1997 | Low | Fair |
| Bluegrass Produced Water Disposal Campbell County | 18 | 2015 | Low | Fair |
| Blue Bank Res Washakie County | 28 | 2003 | Low | Poor |
| Bliss No. 1 Niobrara County | 33 | 1970 | Low | Poor |
| Bliss No. 1 Albany County | 27 | 1956 | Low | Fair |
| Blatt Lake Sublette County | 18 | 2001 | Low | Fair |
| Blake-Denton No. 2 Washakie County | 13 | 1911 | Low | Fair |
| Blake-Denton No. 1 Washakie County | 15 | 1916 | Low | Fair |
| Blake Uinta County | 24 | 1952 | Low | Poor |
| Black Hills Power & Light First Enlargement Weston County | 27 | 1940 | Low | Fair |
| Black Butte Sublette County | 25 | 1989 | Low | Poor |
| Bitterroot No. 1 Fremont County | 33 | 1977 | Low | Poor |
| Biscuit Niobrara County | 24 | 1977 | Low | Poor |
| Bischoff Creek Big Horn County | 34 | 1974 | Low | Fair |
| Bischoff Big Horn County | 56 | 1977 | Low | Poor |
| Bill Leavitt Reservoir Big Horn County | 27 | — | Low | Unsatisfactory |
| Big V Natrona County | 22 | 1940 | Low | Fair |
| Big Sandy Dike Sweetwater County | 22 | 1952 | High | Not Available |
| Big Sandy Dam Sweetwater County | 85 | 1952 | High | Not Available |
| Big Pike Dam Natrona County | 35 | 1965 | Low | Unsatisfactory |
| Big Horn Dike C Johnson County | 50 | 1964 | High | Fair |
| Big Horn Dike B Johnson County | 50 | 1964 | High | Fair |
| Big Horn Dike A Johnson County | 45 | 1964 | High | Fair |
| Big Goose Park (3rd Enl.) Sheridan County | 95 | 1958 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.