Johnny Johnson Dam
Key Takeaway
Johnny Johnson Dam is classified as low hazard in South Dakota. It was completed in 2008 and is 18 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 17 ft (taller than 20.2% in SD) |
| Dam Length | 670 ft |
| Dam Type | Earth |
| Max Storage | 275 acre-ft |
| Normal Storage | 86 acre-ft |
| Max Discharge | 0 cfs |
| Year Completed | 2008 (18 years old) |
| NID ID | SD02640 |
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
SD S&PL
State Government
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Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Johnny Johnson Dam?
Johnny Johnson 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 Johnny Johnson Dam?
Johnny Johnson Dam is owned by SD S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnny Johnson Dam built?
Johnny Johnson Dam was completed in 2008, making it 18 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 Johnny Johnson Dam?
Johnny Johnson Dam 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 Johnny Johnson Dam?
Johnny Johnson Dam has a dam height of 17 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.