Dams in Union County, South Dakota
12Total Dams
0High Hazard
0Significant
Dam Safety in Union County, South Dakota
Union County has 12 dams tracked in the National Inventory of Dams.
The average dam in Union County is 57 years old. The most common purpose is flood risk reduction. The tallest dam is Union Creek No 6 at 39 ft.
Explore more: Oldest dams in South Dakota · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Union Creek No 6 | Low | 39 | Grade Stabilization | 1978 | |
| Union Creek No. 5 | Low | 38 | Grade Stabilization | 1978 | |
| Union Creek No 48 | Low | 37 | Grade Stabilization | 1976 | |
| Union Creek No 9 | Low | 37 | Grade Stabilization | 1978 | |
| Union Creek No 12 | Low | 37 | Grade Stabilization | 1976 | |
| Brule Creek No. 36 | Low | 30 | Flood Risk Reduction | 1966 | |
| Scott Creek Watershed No. 11 | Low | 29 | Flood Risk Reduction | 1955 | |
| Brule Creek No. 26 | Low | 29 | Flood Risk Reduction | 1966 | |
| Scott Creek Watershed No. 3 | Low | 27 | Flood Risk Reduction | 1955 | |
| Brule Creek Watershed No. 16 | Low | 25 | Flood Risk Reduction | 1962 | |
| Brule Creek Watershed No. 17 | Low | 25 | Flood Risk Reduction | 1963 | |
| Brule Creek No. 15 | Low | 22 | Flood Risk Reduction | 1971 |