Map of the Columbia River Basin.

Map of the Columbia River Basin via USACE.

Columbia River

Columbia River Basin Endorsement - Oregon Fishing

Washington State Three Dimensional 3D Raised Relief Map –

About EPA's Work in the Columbia River Basin

The Columbia River Basin Field Guide (2003 version)

Columbia River Basin - Overview

Changing streamflow on Columbia basin tribal lands—climate change and salmon

Columbia Basin Trust Region - Columbia Basin Trust

Columbia River Treaty

The Columbia River Basin provides more than 40% of total U.S. hydroelectric generation - U.S. Energy Information Administration (EIA)

Marley Slade - Colombia River Basin Map

An invader in salmonid rearing habitat: current and future distributions of smallmouth bass (Micropterus dolomieu) in the Columbia River Basin

File:Columbia drainage basin major dams map-es.svg - Wikimedia Commons