GEOGRAPHY THROUGH MAPS
Columbia Plateau
The Columbia Plateau occupies parts of Washington, Oregon and Idaho. Extensive basalt flows built a broad volcanic province later cut by rivers and reshaped by major Ice Age floods.
Fast Facts
- It lies largely between the Cascades and northern Rockies.
- The Columbia and Snake systems drain much of the region.
- Flood basalts differ from a single stratovolcano cone.
Connected lessons
- Columbia PlateauMap, explanation and practice
Geographical connections
- Columbia RiverRelated places
- Snake RiverRelated places
- Colorado PlateauRelated places