Bruning No.1
Key Takeaway
Bruning No.1 is classified as high hazard in South Dakota. It was completed in 1934 and is 92 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 34 ft (taller than 93.1% in SD) |
| Dam Length | 760 ft |
| Dam Type | Earth |
| Max Storage | 350 acre-ft |
| Normal Storage | 215 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 998 cfs |
| Year Completed | 1934 (92 years old) |
| NID ID | SD01418 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
S&PL
State Government
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Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Bruning No.1?
Bruning No.1 is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Bruning No.1?
Bruning No.1 is owned by S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Bruning No.1 built?
Bruning No.1 was completed in 1934, making it 92 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 Bruning No.1?
Bruning No.1 serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Bruning No.1?
Bruning No.1 has a dam height of 34 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 Bruning No.1 last inspected?
Bruning No.1 was last inspected on September 27, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.