The four chapters of the Atlas of the Columbia River Basin showcase select aspects of the Columbia River Basin through interactive maps. The first chapter provides a broad yet descriptive overview of the Columbia River Basin. The second chapter illustrates the dramatic geological events that shaped the basin’s diverse landscape. The third chapter explains the rich cultural history of the basin, from the original Native American inhabitants to the Columbia River Treaty. The fourth and final chapter documents recreational and economical land uses within in the basin as well as the history of, and environmental concerns related to, the Hanford Nuclear Site.