- Columbia River Subbasins from the Northwest Power and Conservation Council (source: Northwest Power and Conservation Council)
- Columbia Basin Trust Region (source: Columbia Basin Trust)
- Artistic Rendering of the Upper Columbia (source: courtesy of author, Eileen Delehanty Pearkes)
- Pacific Northwest Reservoir System from US Federal Agencies (Source: Wikipedia)
- Indigenous communities and salmon habitat from the Columbia River Inter-Tribal Fish Commission (source: Columbia River Inter-Tribal Fish Commission)
- Biogeoclimatic Zones of the Basin with projections (courtesy Greg Utzig)
- Basic Columbia River Basin map (source: Wikipedia)
- Columbia Basin Subway Style Map (source: Daniel P. Huffman)