6Total Dams
1High Hazard
0Significant
Dam Safety in Yankton County, South Dakota
Yankton County has 6 dams tracked in the National Inventory of Dams. Of these, 1 are classified as high hazard — meaning failure would probably cause loss of human life. Currently, 1 dam has a condition assessment of poor or unsatisfactory.
The average dam in Yankton County is 48 years old. The most common purpose is recreation. The tallest dam is Gavins Point Dam - Yankton Dam at 74 ft.
Explore more: Oldest dams in South Dakota · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Marindahl | High | Poor | 58 | Recreation | 1953 |
| Gavins Point Dam - Yankton Dam | Low | Not assessed | 74 | Flood Risk Reduction | 1958 |
| Darrell Nelson Dam | Low | Not assessed | 32 | Fish and Wildlife Pond | 2015 |
| Lower James Rc&d Ca-171-ya | Low | Not assessed | 31 | Grade Stabilization | 1980 |
| Walloch Dam | Low | Not assessed | 20 | Fish and Wildlife Pond | 2016 |
| Beaver | Low | Not assessed | 15 | Recreation | 1941 |