"Technical memorandum report." "On June 1, 2005, Governor Arnold Schwarzenegger issued Executive Order S-3-05 establishing greenhouse gas emissions targets for California and requiring biennial reports on potential climate change effects on several areas, including water resources ... This report is the Department of Water Resources response to the Executive Order."--Executive summary. Includes bibliographical references.

Introduction -- Potential impacts of climate change on California's water resources -- Background: California's water resources -- The role of water management and use in greenhouse gas emissions -- Changes in air temperature -- Changes in precipitation and runoff -- Sea level rise -- Consequences of sea level rise -- Future water demand -- Colorado River Basin -- Possible effects on fish -- Sudden climate change -- DWR Climate change studies -- Climate change scenarios -- Water impacts approach -- Preliminary climate change impacts assessment for state water project and Central Valley Project operations -- Description of the CVP and SWP -- Modeling methodology for quantifying climate change impacts on CVP and SWP operations -- Generating CalSim-II input from global climate model output -- Study scenarios -- Preliminary climate change impacts assessment for the Sacramento-San Joaquin Delta -- Climate change impacts on delta inflows and exports for present sea level conditions -- Climate change impacts on water quality for present sea level conditions -- Sea level rise -- Climate change impacts on flood management -- Literature review of flood analysis and climate change -- Historical precipitation, temperature, and runoff trends -- Climate change scenario simulation data -- Climate change impacts on evapotranspiration -- Evaporative demand for applied water in California -- Energy budget -- Plant physiology and climate change -- A simulation model for estimating ET of applied water (SIMETAW) -- Appendix 1 energy budget analysis for climate change -- Appendix 2: The photosynthesis response curve to CO2 -- Appendix 3: The Penman-Monteith equation for reference evapotranspiration -- Future directions -- SWP-CVP operations impacts -- Delta impacts -- Flood management -- Evapotranspiration -- Modeling tool integration -- Coordination of state climate change research activities by the California Energy Commission -- Risk assessment.