From the Executive Summary: "As directed by Congress in Section 9505 of the SECURE Water Act of 2009 (Public Law 111-11), the U.S. Department of Energy (DOE), in consultation with the federal Power Marketing Administrations (PMAs) and other federal agencies, has prepared a comprehensive assessment examining the potential effects of climate change on water available for hydropower generation at federal facilities and on the marketing of that power. [...] The 9505 Assessment, [...] included: 1) a historical analysis of the sensitivity of federal hydropower operations to climate variables, 2) a climate modeling analysis that projected climate conditions and impacts to hydropower into the future, and 3) a literature review of other related climate studies for comparison to the 9505 modeling results. [...] The 9505 Assessment gives federal hydropower administrators the opportunity to plan their operational or contracting responses to these changes. Recommendations from the PMA administrators on how they can respond to the effects of climate change are included as part of this Report to Congress. The future assessments that are required every five years under Section 9505 can be improved by incorporating improved climate models and data that will become available soon, closer examination of extreme events and longer-term change in more detail, and addressing the interactions among hydropower and other water uses."
U.S. Department of Energy: https://www.energy.gov/