Wahiawa Dam, also known as Lake Wilson or Wilson Reservoir, is a private-owned structure located in Waialua, Hawaii.
Wind
Humidity
Completed in 1906, this Earth dam stands at a height of 88 feet and has a structural height of 98 feet, with a length of 660 feet. It serves primarily for irrigation purposes, with a storage capacity of 9200 acre-feet and a normal storage level of 7761 acre-feet.
Situated on the Kaukonahua Stream in Honolulu County, Wahiawa Dam has a high hazard potential and is rated in poor condition. The dam features a controlled spillway with a width of 205 feet and a maximum discharge capacity of 24,500 cubic feet per second. Despite being regulated by the Hawaii Department of Land and Natural Resources, the dam's risk assessment is classified as very high, warranting close monitoring and potential risk management measures.
For water resource and climate enthusiasts, Wahiawa Dam offers a fascinating glimpse into Hawaii's water infrastructure history and the challenges of maintaining aging dams in a high-risk environment. With its critical role in irrigation and potential impact on the surrounding area in case of failure, the dam serves as a reminder of the importance of effective dam management and emergency preparedness in the face of climate change and evolving water resource needs.
Year Completed |
1906 |
Dam Length |
660 |
Dam Height |
88 |
River Or Stream |
KAUKONAHUA STREAM |
Primary Dam Type |
Earth |
Surface Area |
302 |
Hydraulic Height |
88 |
Drainage Area |
16.7 |
Nid Storage |
9200 |
Structural Height |
98 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
98 |
Sf Kaukonahua Str At E Pump
|
34cfs |
Opaeula Str Nr Wahiawa
|
27cfs |
Kipapa Str Nr Wahiawa
|
0cfs |
Nf Kaukonahua Str Abv Rb
|
13cfs |
Waikele Str At Waipahu
|
115cfs |
Makaha Str Nr Makaha
|
16cfs |
| Location | Reservations | Toilets |
|---|---|---|
Camp Mokuleia
|
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Kahana Valley State Park - Oahu
|
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Kea'au Beach Park
|
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Keaiwa Heiau State Rec Area - Oahu
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Kahana campground
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