Rainbow Lake Dam
Key Takeaway
Rainbow Lake Dam is classified as high hazard in Arkansas. It was completed in 1961 and is 65 years old. Its primary use is recreation. 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 | 42 ft (taller than 76.4% in AR) |
| Dam Length | 635 ft |
| Dam Type | Earth |
| Max Storage | 310 acre-ft |
| Normal Storage | 207 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,832 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | AR00254 |
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
WOODLAND HILLS PROPERTY OWNERS ASSOCIATION, INC.
Private
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High Hazard 39 ftFrequently Asked Questions
What is the hazard classification of Rainbow Lake Dam?
Rainbow Lake Dam 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 Rainbow Lake Dam?
Rainbow Lake Dam is owned by WOODLAND HILLS PROPERTY OWNERS ASSOCIATION, INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rainbow Lake Dam built?
Rainbow Lake Dam was completed in 1961, making it 65 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 Rainbow Lake Dam?
Rainbow 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 Rainbow Lake Dam?
Rainbow Lake Dam has a dam height of 42 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 Rainbow Lake Dam last inspected?
Rainbow Lake Dam was last inspected on June 6, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.