If the Columbia River's mouth eluded some of the most seasoned Northwest explorers who overlooked it, or mistook it for a bay ...

By 1858 more than 30,000 prospectors had poured into the Fraser River Valley. This mass incursion would soon lead the British government to establish British Columbia as a crown colony of the Empire.

The U.S. Environmental Protection Agency has announced a roughly 150-mile stretch of the Columbia River between the Canadian border and Grand Coulee Dam has been added to the Superfund National ...