Explore the Columbia River: its map, rich history from Native Americans to pioneers, impressive length, and facts about its ...

Explore the Snake River: its map, rich history from Native Americans to pioneers, impressive length, and facts about Hells ...

Lava flows, near mile-thick glaciers and ice age floods layered and carved up this landscape.

Negotiations over the Columbia River basin could affect the environment in Canada and electrical generation and flood control in the United States. Negotiations of a 60-year-old treaty between ...