Selvin Johnson
Key Takeaway
Selvin Johnson is classified as low hazard in South Dakota. It was completed in 1935 and is 91 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 26 ft (taller than 65.2% in SD) |
| Dam Length | 450 ft |
| Dam Type | Earth |
| Max Storage | 80 acre-ft |
| Normal Storage | 60 acre-ft |
| Max Discharge | 850 cfs |
| Year Completed | 1935 (91 years old) |
| NID ID | SD02059 |
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
SELVIN JOHNSON
Private
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Selvin Johnson?
Selvin Johnson 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 Selvin Johnson?
Selvin Johnson is owned by SELVIN JOHNSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Selvin Johnson built?
Selvin Johnson was completed in 1935, making it 91 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 Selvin Johnson?
Selvin Johnson 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 Selvin Johnson?
Selvin Johnson has a dam height of 26 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.