Brost Number 1
Key Takeaway
Brost Number 1 is classified as significant hazard in South Dakota. It was completed in 1959 and is 67 years old. Its primary use is fire protection. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 32 ft (taller than 90.4% in SD) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 200 acre-ft |
| Normal Storage | 130 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 1,222 cfs |
| Year Completed | 1959 (67 years old) |
| NID ID | SD00148 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
HERMAN BROST
Private
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Low Hazard 34 ftFrequently Asked Questions
What is the hazard classification of Brost Number 1?
Brost Number 1 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Brost Number 1?
Brost Number 1 is owned by HERMAN BROST (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Brost Number 1 built?
Brost Number 1 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 Brost Number 1?
Brost Number 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 Brost Number 1?
Brost Number 1 has a dam height of 32 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.
When was Brost Number 1 last inspected?
Brost Number 1 was last inspected on November 14, 1981. Inspection dates indicate when a formal review occurred, not the results of that inspection.