According to residents in Carnation, the latest incident was the eighth false alarm since 2020.
CARNATION, Wash. — Seattle Public Utilities (SPU) revealed the cause of the latest false alarm of the Tolt River Dam’s emergency system Wednesday.
According to SPU, the unplanned siren on March 27 was accidentally triggered during remote work on the system.
The siren caused many residents in nearby Carnation to evacuate their homes. Residents thought they were preparing for a dam failure that would cause “catastrophic damage” to their community.
The Tolt River Dam holds back nearly 58,000 acre-feet of water, which provides as much as 40%
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