Kaneha Reservoir
Key Takeaway
Kaneha Reservoir is classified as high hazard in Hawaii. It was completed in 1910 and is 116 years old. Its primary use is irrigation. 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 | 46 ft (taller than 76.4% in HI) |
| Dam Length | 410 ft |
| Dam Type | Earth |
| Max Storage | 420 acre-ft |
| Normal Storage | 356 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 2,640 cfs |
| Year Completed | 1910 (116 years old) |
| NID ID | HI00015 |
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
Cornerstone Hawaii Holdings LLC
Private
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High Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Kaneha Reservoir?
Kaneha Reservoir 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 Kaneha Reservoir?
Kaneha Reservoir is owned by Cornerstone Hawaii Holdings LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Kaneha Reservoir built?
Kaneha Reservoir was completed in 1910, making it 116 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 Kaneha Reservoir?
Kaneha Reservoir serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Kaneha Reservoir?
Kaneha Reservoir has a dam height of 46 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 Kaneha Reservoir last inspected?
Kaneha Reservoir was last inspected on April 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.