There are nearly 1,200 dams (more than half of them privately owned) in Washington state storing at least 3.2 million gallons of water each, according to a 2016 inventory, and the state has seen ...

The Wanapum is one of 11 dams on Washington State’s Columbia River, the largest river in the Pacific Northwest. Those dams hold back the flow of the river, creating massive reservoirs. When the dams ...