Alexander
Key Takeaway
Alexander is classified as high hazard in Hawaii. It was completed in 1931 and is 95 years old. Its primary use is hydroelectric. 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 | 119 ft (taller than 99.2% in HI) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 2.8K acre-ft |
| Normal Storage | 1.4K acre-ft |
| Surface Area | 37 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 621 cfs |
| Year Completed | 1931 (95 years old) |
| NID ID | HI00098 |
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
BBCP Kauai Operating, LLC
Private
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High Hazard 40 ftFrequently Asked Questions
What is the hazard classification of Alexander?
Alexander 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 Alexander?
Alexander is owned by BBCP Kauai Operating, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Alexander built?
Alexander was completed in 1931, making it 95 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 Alexander?
Alexander serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Alexander?
Alexander has a dam height of 119 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 Alexander last inspected?
Alexander was last inspected on August 2, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.