Hansen Dam
Key Takeaway
Hansen Dam is classified as low hazard in South Dakota. It was completed in 1990 and is 36 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 25 ft (taller than 57.4% in SD) |
| Dam Length | 350 ft |
| Dam Type | Earth |
| Max Storage | 78 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 525 cfs |
| Year Completed | 1990 (36 years old) |
| NID ID | SD02524 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
MARIE HANSON
Private
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Low Hazard 17 ftFrequently Asked Questions
What is the hazard classification of Hansen Dam?
Hansen Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Hansen Dam?
Hansen Dam is owned by MARIE HANSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hansen Dam built?
Hansen Dam was completed in 1990, making it 36 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Hansen Dam?
Hansen Dam serves the following purposes: Fish And Wildlife Pond, Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hansen Dam?
Hansen Dam has a dam height of 25 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.