Learn more about Columbia River Treaty dams and reservoirs and find out what Basin residents said at information sessions.
Columbia River Basin Map
Use this interactive map to learn about the Columbia River system including Columbia River Treaty dams, reservoirs and pre-dam water levels. This map allows you to explore the Columbia River Basin and changes that have occurred since construction of Columbia River Treaty Dams.
Columbia River Basin Model
This interactive model of Columbia River hydro operations demonstrates water levels and flow conditions under current Columbia River Treaty (CRT) operations in each reservoir area throughout the year. CRT operations vary depending on climatic variables, and the model allows users to select the runoff condition (“wet”, “normal” or “dry” year) and watch the water level and flow condition changes.