Hawaii dam at risk of ‘imminent’ failure
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Hawaiʻi's proposal to acquire the dam, and have taxpayers foot the bill for repairs, let the company off the hook.
Catastrophic flash flooding on Oahu forced more than 5,500 evacuations and pushed the 120-year-old Wahiawa Dam to dangerous levels Friday. The dam has since receded but evacuation orders remain in place as more rain is expected.
The private owner of a dam in Wahiawa that city officials warned could fail and endanger North Shore residents amid a deluge on Friday contends that the dam functioned as designed, is safe, and actually reduced flood risks.
The latter is important because the dam holds back 10 feet of water that extends for 2½ miles upstream. If there is a breach, a massive rush of water downstream would be “catastrophic,” said Chris Hirsch, a dam removal program manager at the Massachusetts Division of Ecological Restoration.