Johnson Bros.
Key Takeaway
Johnson Bros. is classified as low hazard in South Dakota. It was completed in 1951 and is 75 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 28 ft (taller than 77.7% in SD) |
| Dam Length | 260 ft |
| Dam Type | Earth |
| Max Storage | 59 acre-ft |
| Normal Storage | 42 acre-ft |
| Max Discharge | 125 cfs |
| Year Completed | 1951 (75 years old) |
| NID ID | SD01769 |
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
JOHNSON BROS.
Private
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Low Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Johnson Bros.?
Johnson Bros. 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 Johnson Bros.?
Johnson Bros. is owned by JOHNSON BROS. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnson Bros. built?
Johnson Bros. was completed in 1951, making it 75 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 Johnson Bros.?
Johnson Bros. 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 Johnson Bros.?
Johnson Bros. has a dam height of 28 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.