Kaloko Reservoir
Key Takeaway
Kaloko Reservoir is classified as high hazard in Hawaii. It was completed in 1890 and is 136 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 | 27 ft (taller than 29.9% in HI) |
| Dam Length | 915 ft |
| Dam Type | Earth |
| Max Storage | 1.4K acre-ft |
| Normal Storage | 1.3K acre-ft |
| Surface Area | 38 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1890 (136 years old) |
| NID ID | HI00030 |
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
Kaloko LLC, Mary N. Lucas Trust
Private
Nearby Dams
Waiakalua Reservoir
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High Hazard 26 ftKaneha Reservoir
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High Hazard 46 ftKalihiwai Reservoir
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High Hazard 20 ftField 1 Kealia Reservoir
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High Hazard 29 ftPond No. 1 At Kauai Ranch
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High Hazard 32 ftMimino Reservoir
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High Hazard 44 ftUpper Anahola Reservoir
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Low Hazard 27 ftLower Kapahi Reservoir
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High Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Kaloko Reservoir?
Kaloko 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 Kaloko Reservoir?
Kaloko Reservoir is owned by Kaloko LLC, Mary N. Lucas Trust (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Kaloko Reservoir built?
Kaloko Reservoir was completed in 1890, making it 136 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 Kaloko Reservoir?
Kaloko 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 Kaloko Reservoir?
Kaloko Reservoir 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 Kaloko Reservoir last inspected?
Kaloko Reservoir was last inspected on December 21, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.