Sienna Lake Dam
Key Takeaway
Sienna Lake Dam is classified as low hazard in Arkansas. It was completed in 1966 and is 60 years old. Its primary use is recreation.
Physical Details
| Dam Height | 25 ft (taller than 44.1% in AR) |
| Dam Length | 234 ft |
| Dam Type | Earth |
| Max Storage | 255 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,588 cfs |
| Year Completed | 1966 (60 years old) |
| NID ID | AR00128 |
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
COOPER LAND DEVELOPMENT, INC.
Private
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Significant HazardFrequently Asked Questions
What is the hazard classification of Sienna Lake Dam?
Sienna Lake Dam 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 Sienna Lake Dam?
Sienna Lake Dam is owned by COOPER LAND DEVELOPMENT, INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sienna Lake Dam built?
Sienna Lake Dam was completed in 1966, making it 60 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 Sienna Lake Dam?
Sienna 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 Sienna Lake Dam?
Sienna Lake Dam has a dam height of 25 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 Sienna Lake Dam last inspected?
Sienna Lake Dam was last inspected on October 7, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.