Arrowhead Lakes Lower Dam
Key Takeaway
Arrowhead Lakes Lower Dam is classified as high hazard in Missouri. It was completed in 1973 and is 53 years old. Its primary use is flood risk reduction. 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 | 27 ft (taller than 49% in MO) |
| Dam Type | Earth |
| Max Storage | 159 acre-ft |
| Normal Storage | 79 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 360 sq mi |
| Year Completed | 1973 (53 years old) |
| NID ID | MO30267 |
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
VANCE HARPER
Private
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High Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Arrowhead Lakes Lower Dam?
Arrowhead Lakes Lower 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 Arrowhead Lakes Lower Dam?
Arrowhead Lakes Lower Dam is owned by VANCE HARPER (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Arrowhead Lakes Lower Dam built?
Arrowhead Lakes Lower Dam was completed in 1973, making it 53 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 Arrowhead Lakes Lower Dam?
Arrowhead Lakes Lower Dam serves the following purposes: Flood Risk Reduction, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Arrowhead Lakes Lower Dam?
Arrowhead Lakes Lower Dam has a dam height of 27 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 Arrowhead Lakes Lower Dam last inspected?
Arrowhead Lakes Lower Dam was last inspected on August 20, 1979. Inspection dates indicate when a formal review occurred, not the results of that inspection.