The Columbia River Treaty is an international agreement between the United States and Canada,  signed in 1961 to coordinate flood control and electrical energy production and development and operation of the Columbia River Basin.

This web page provides an overview of the Treaty and the supporting Columbia River Treaty organization, along with information on Treaty projects and operations, and links of interest to the Treaty. It is jointly sponsored by the Columbia River Treaty's U.S. and Canadian entities, maintained by the Engineering Committee of the Permanent Engineering Board, hosted and maintained by the U.S. Army Corps of Engineers Northwestern Division, as well as maintained with input from Bonneville Power Administration.

A Presidential Executive Order created the U.S. Entity and the U.S. Section of the Permanent Engineering Board.

Learn more about the organization and history of the Treaty, and read the Treaty itself.