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 1001–1025 of 1,283
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sawmill Campbell County | 24 | 1964 | Low | Poor |
| Schlautman No. 1 Campbell County | 15 | 1940 | Low | Fair |
| Schnoor Natrona County | 20 | 1910 | Low | Poor |
| School Section Natrona County | 31 | 1954 | Low | Fair |
| SCS Beaver Creek Weston County | 21 | 1940 | Low | Not Rated |
| Searight Campbell County | 24 | 1940 | Low | Fair |
| Seaverson Carbon County | 33 | 1944 | Low | Poor |
| Second Enl. of 41-3-49-75 Stock Campbell County | 37 | 1960 | Low | Fair |
| Sederlin Carbon County | 7 | 1910 | Low | Poor |
| Sedgwick Weston County | 25 | 1962 | Low | Poor |
| Sedgwick 9-394-1 Weston County | 26 | 1940 | Low | Not Rated |
| Seepage Carbon County | 18 | 1914 | Low | Poor |
| Seepage Lake Albany County | 7 | 1970 | Low | Fair |
| Separation Sweetwater County | 13 | 1927 | Low | Poor |
| Settling Basin Lincoln County | 24 | 1985 | Low | Fair |
| Settling Pond No. 7 Campbell County | 25 | 1982 | Low | Fair |
| Sewage Lagoon Sweetwater County | 12 | 1976 | Low | Fair |
| Sg Palo Johnson County | 27 | 2004 | Low | Fair |
| Shear Enlargement of Cochrun Crook County | 35 | 2017 | Low | Fair |
| Shearing Pen Campbell County | 24 | 1943 | Low | Fair |
| Sheep Mountain Carbon County | 42 | 1946 | Low | Fair |
| Shell Creek Natrona County | 23 | 1944 | Low | Poor |
| Shellhart Fish & Stock Albany County | 27 | 1976 | Low | Poor |
| Sherwin 9-249-6 Weston County | 31 | 1954 | Low | Not Rated |
| Shirley Basin Reservoir Carbon County | 25 | 1941 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.