Halenanahu Reservoir, located in Kipu, Hawaii, is a privately-owned dam with a primary purpose of irrigation.
Wind
Humidity
Completed in 1920, this earth dam stands at a height of 35 feet, with a maximum storage capacity of 460 acre-feet. The reservoir covers a surface area of 22.9 acres and is fed by the Halenanhu Stream, providing water for agricultural use in the region.
Despite its historical significance, Halenanahu Reservoir poses a high hazard potential due to its poor condition assessment, with a risk assessment rating of moderate. The dam's spillway is uncontrolled, with a width of 115 feet, increasing the risk of potential flooding in the area. The dam has a regular inspection frequency of 5 years, with the last inspection conducted in November 2018.
As climate change continues to impact water resources, the management and maintenance of dams like Halenanahu Reservoir become crucial to ensure the safety of surrounding communities and the sustainability of water supply for irrigation purposes. With its location in the Honolulu District of Kauai, Hawaii, the reservoir plays a vital role in the local agricultural sector, highlighting the importance of effective risk management measures and regular maintenance to mitigate potential hazards and ensure the resilience of water resources in the face of changing environmental conditions.
Year Completed |
1920 |
Dam Length |
650 |
Dam Height |
35 |
River Or Stream |
HALENANHU STREAM |
Primary Dam Type |
Earth |
Surface Area |
22.9 |
Hydraulic Height |
32 |
Drainage Area |
1.16 |
Nid Storage |
460 |
Structural Height |
40 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
40 |
Sf Wailua River Nr Lihue
|
125cfs |
Eb Of Nf Wailua River Nr Lihue
|
31cfs |
Left Branch Opaekaa Str Nr Kapaa
|
2cfs |
Waialae Str At Alt 3
|
17cfs |
Wainiha River Nr Hanalei
|
92cfs |
Waimea River Nr Waimea
|
419cfs |
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