Raffensperger No. 1
Key Takeaway
Raffensperger No. 1 is classified as low hazard in South Dakota. It was completed in 1965 and is 61 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 25 ft (taller than 57.4% in SD) |
| Dam Length | 335 ft |
| Dam Type | Earth |
| Max Storage | 22 acre-ft |
| Normal Storage | 15 acre-ft |
| Max Discharge | 500 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | SD01255 |
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
REX RAFFLENSPERGER
Private
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Low Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Raffensperger No. 1?
Raffensperger No. 1 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 Raffensperger No. 1?
Raffensperger No. 1 is owned by REX RAFFLENSPERGER (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Raffensperger No. 1 built?
Raffensperger No. 1 was completed in 1965, making it 61 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 Raffensperger No. 1?
Raffensperger No. 1 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Raffensperger No. 1?
Raffensperger No. 1 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.