Bonesteel Lake
Key Takeaway
Bonesteel Lake is classified as low hazard in South Dakota. It was completed in 1935 and is 91 years old. Its primary use is recreation.
Physical Details
| Dam Height | 15 ft (taller than 11.1% in SD) |
| Dam Length | 550 ft |
| Dam Type | Earth |
| Max Storage | 132 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,340 cfs |
| Year Completed | 1935 (91 years old) |
| NID ID | SD00554 |
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
S&PL
State Government
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Low Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Bonesteel Lake?
Bonesteel Lake 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 Bonesteel Lake?
Bonesteel Lake is owned by S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Bonesteel Lake built?
Bonesteel Lake 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 Bonesteel Lake?
Bonesteel Lake serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Bonesteel Lake?
Bonesteel Lake has a dam height of 15 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 Bonesteel Lake last inspected?
Bonesteel Lake was last inspected on October 11, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.