A dam on the Hawaiian island of Maui is in imminent danger of failure and an evacuation order has been issued for residents “downstream of Kaupakalua Dam in Haiku,” according to the Hawaii Emergency Management Agency.A dam on the Hawaiian island of Maui is in imminent danger of failure and an evacuation order has been issued for residents “downstream of Kaupakalua Dam in Haiku,” according to the Hawaii Emergency Management Agency.