Mcmahan Lake Dam
Key Takeaway
Mcmahan Lake Dam is classified as significant hazard in Arkansas. It was completed in 1948 and is 78 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 11 ft (taller than 1.5% in AR) |
| Dam Length | 811 ft |
| Dam Type | Earth |
| Max Storage | 43 acre-ft |
| Normal Storage | 14 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 641 cfs |
| Year Completed | 1948 (78 years old) |
| NID ID | AR01207 |
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
RICK SHORT
Private
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What is the hazard classification of Mcmahan Lake Dam?
Mcmahan Lake Dam 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 Mcmahan Lake Dam?
Mcmahan Lake Dam is owned by RICK SHORT (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mcmahan Lake Dam built?
Mcmahan Lake Dam was completed in 1948, making it 78 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 Mcmahan Lake Dam?
Mcmahan Lake Dam 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 Mcmahan Lake Dam?
Mcmahan Lake Dam has a dam height of 11 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 Mcmahan Lake Dam last inspected?
Mcmahan Lake Dam was last inspected on June 1, 1981. Inspection dates indicate when a formal review occurred, not the results of that inspection.