Kaawanui Reservoir
Key Takeaway
Kaawanui Reservoir is classified as high hazard in Hawaii. It was completed in 1950 and is 76 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 | 26 ft (taller than 26.8% in HI) |
| Dam Length | 2,560 ft |
| Dam Type | Earth |
| Max Storage | 110 acre-ft |
| Normal Storage | 83 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 200 cfs |
| Year Completed | 1950 (76 years old) |
| NID ID | HI00009 |
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
Robinson Family Partners
Private
Nearby Dams
Waikaia Reservoir
Kauai, HI
High Hazard 26 ftWaikoloi Reservoir
Kauai, HI
High Hazard 64 ftKepani Reservoir
Kauai, HI
High Hazard 32 ftKapa Reservoir
Kauai, HI
High Hazard 21 ftHukiwai Reservoir
Kauai, HI
High Hazard 36 ftIpuolono Reservoir
Kauai, HI
High Hazard 45 ftElima Reservoir
Kauai, HI
High Hazard 37 ftMau Reservoir
Kauai, HI
High Hazard 38 ftFrequently Asked Questions
What is the hazard classification of Kaawanui Reservoir?
Kaawanui 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 Kaawanui Reservoir?
Kaawanui Reservoir is owned by Robinson Family Partners (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Kaawanui Reservoir built?
Kaawanui Reservoir was completed in 1950, making it 76 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 Kaawanui Reservoir?
Kaawanui 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 Kaawanui Reservoir?
Kaawanui Reservoir has a dam height of 26 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 Kaawanui Reservoir last inspected?
Kaawanui Reservoir was last inspected on November 2, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.