Hanson Dam
Key Takeaway
Hanson Dam is classified as low hazard in South Dakota. It was completed in 1959 and is 67 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 19 ft (taller than 29.5% in SD) |
| Dam Length | 385 ft |
| Dam Type | Earth |
| Max Storage | 53 acre-ft |
| Normal Storage | 42 acre-ft |
| Max Discharge | 840 cfs |
| Year Completed | 1959 (67 years old) |
| NID ID | SD01205 |
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
EARL HANSON
Private
Nearby Dams
Sterns No.2
Harding, SD
Low Hazard 20 ftBrown Dam #1
Harding, SD
Low Hazard 23 ftRoad Dam
Harding, SD
Low Hazard 20 ftBrown Dam #2
Harding, SD
Low Hazard 17 ftSterns #1
Harding, SD
Low Hazard 24 ftOlson Dam; Oakley
Bowman, ND
Low Hazard 31 ftEgeland Dam; Craig
Bowman, ND
Low Hazard 28 ftAllram Dam; Evelyn Hansen 3
Bowman, ND
Low Hazard 17 ftFrequently Asked Questions
What is the hazard classification of Hanson Dam?
Hanson 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 Hanson Dam?
Hanson Dam is owned by EARL HANSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hanson Dam built?
Hanson Dam was completed in 1959, making it 67 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?
Hanson Dam serves the following purposes: 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 Hanson Dam?
Hanson Dam has a dam height of 19 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.