Washington’s Green River Valley Prepares for a Flood

Months before flood season begins in western Washington, government officials have already declared a state of emergency and, even as they worry about the viability of a pivotal dam, have encouraged residents to buy flood insurance immediately. When the Howard Hanson Dam was first built on the Green River in western Washington in 1962, the concrete behemoth was hailed as the new protector of the valley below.

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