Bison
Key Takeaway
Bison is classified as low hazard in South Dakota. It was completed in 1947 and is 79 years old. Its primary use is recreation.
Physical Details
| Dam Height | 24 ft (taller than 53.3% in SD) |
| Dam Length | 2,300 ft |
| Dam Type | Earth |
| Max Storage | 2.1K acre-ft |
| Normal Storage | 880 acre-ft |
| Surface Area | 122 acres |
| Drainage Area | 100 sq mi |
| Max Discharge | 11,046 cfs |
| Year Completed | 1947 (79 years old) |
| Year Modified | 2000 |
| NID ID | SD00035 |
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
GF&P
State Government
Nearby Dams
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Low Hazard 19 ftJohn Penor
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Low Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Bison?
Bison 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 Bison?
Bison is owned by GF&P (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Bison built?
Bison was completed in 1947, making it 79 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 Bison?
Bison 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 Bison?
Bison has a dam height of 24 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 Bison last inspected?
Bison was last inspected on November 6, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.