Hanson Dam No. 2
Key Takeaway
Hanson Dam No. 2 is classified as low hazard in South Dakota. It was completed in 2016 and is 10 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 21 ft (taller than 40.7% in SD) |
| Dam Length | 479 ft |
| Dam Type | Earth |
| Max Storage | 99 acre-ft |
| Normal Storage | 40 acre-ft |
| Max Discharge | 0 cfs |
| Year Completed | 2016 (10 years old) |
| NID ID | SD02645 |
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
Henry Hanson
Private
Nearby Dams
Hanson Dam
Haakon, SD
Low Hazard 21 ftSd Noname 202
Haakon, SD
Low Hazard 25 ftSd Noname 196
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Low Hazard 18 ftSd Noname 203
Haakon, SD
Low Hazard 15 ftSd Noname 277
Haakon, SD
Low Hazard 28 ftSd Noname 240
Haakon, SD
Low Hazard 19 ftSd Noname 200
Haakon, SD
Low Hazard 30 ftSd Noname 199
Haakon, SD
Low Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Hanson Dam No. 2?
Hanson Dam No. 2 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 Hanson Dam No. 2?
Hanson Dam No. 2 is owned by Henry Hanson (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hanson Dam No. 2 built?
Hanson Dam No. 2 was completed in 2016, making it 10 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 Hanson Dam No. 2?
Hanson Dam No. 2 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hanson Dam No. 2?
Hanson Dam No. 2 has a dam height of 21 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.