Located in Kalaheo, Hawaii, the Ipuolono Reservoir, also known as No.
Wind
Humidity
8 Reservoir, is a privately owned earth dam constructed in 1910 primarily for irrigation purposes. With a dam height of 45 feet and a storage capacity of 450 acre-feet, this reservoir serves as a vital water resource in the region, covering a surface area of 23 acres and draining an area of 1.96 square miles through the Kalaheo Gulch.
Despite its historical significance and essential role in supporting local agriculture, the Ipuolono Reservoir poses a high hazard potential and is currently in poor condition as of the last assessment in 2009. The dam's inspection frequency is set at every five years, with the last inspection conducted in July 2018. While the risk assessment for the reservoir is moderate, there is a need for enhanced risk management measures and potential updates to emergency action plans to ensure the safety and sustainability of this critical water infrastructure in the face of changing climate conditions.
Year Completed |
1910 |
Dam Length |
680 |
Dam Height |
45 |
River Or Stream |
KALAHEO GULCH |
Primary Dam Type |
Earth |
Surface Area |
23 |
Hydraulic Height |
45 |
Drainage Area |
1.96 |
Nid Storage |
450 |
Structural Height |
50 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
50 |
Waimea River Nr Waimea
|
295cfs |
Waialae Str At Alt 3
|
34cfs |
Sf Wailua River Nr Lihue
|
173cfs |
Eb Of Nf Wailua River Nr Lihue
|
39cfs |
Left Branch Opaekaa Str Nr Kapaa
|
2cfs |
Wainiha River Nr Hanalei
|
178cfs |
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