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​Climate Change and the Federal Columbia River 
Power System

The Bonneville Power Administration, the U.S. Army Corps of Engineers, and the Bureau of Reclamation, agencies that comprise the River Management Joint Operating Committee (RMJOC), are continuously evaluating and anticipating vulnerabilities, risk, and resiliency of the Federal Columbia River Power System. As part of this shared responsibility, the RMJOC commissioned a climate change research project in 2013 with the University of Washington and Oregon State University. This study, which was principally funded by BPA’s Technology and Innovation Office and other federal and state agencies, advanced the state-of-the-science in hydroclimate prediction, and projected hydrological effects of climate change across the region. In September 2017, the streamflow dataset from this project was published, and is available for download.

Part I (2018) focused on hydroclimate variables such as projected temperature, precipitation, snowpack and streamflow changes in the Columbia River Basin, and for many river basins in western Oregon and Washington, through the rest of the 21st Century. Part II (2020) followed on Part I studies with a focus on current reservoir regulation. Flows produced for Part I were modified for evapotranspiration and irrigation depletions and input into hydro-regulation models. The response of regulated streamflow to climate change under existing Columbia River hydro-regulation procedures were evaluated and summarized in report Part II. Interrelated reservoir modeling was conducted by BPA, Reclamation, and the Corps of Engineers. The monthly regulated streamflow datasets developed by the Corps are available for download.
Modeling data from Reclamation and BPA are available upon request. Send inquires to Reclamation at and to BPA at
​Climate Change Study (2018-2020)