Title Page -- Copyright -- Contents -- Foreword -- Acknowledgments -- Executive Summary -- Acronyms and Abbreviations -- Chapter 1 - Introduction -- Objective of the Study -- Methodology -- Structure of the Report -- River Basins Used as Case Studies -- Chapter 2 - Context -- Climate Impacts on Water Regulation -- Climate Impacts on Glaciers -- Climate Impacts on Mountain Wetlands -- Chapter 3 - Climate Analysis -- High-Resolution Climate Projection for Peru for the 21st Century -- Ensembles to Simulate Future Climate -- Subgrid Orography Dynamic Model (Downscaling Tool) -- Rainfall Trend Analysis -- Limitations in Climate Projections -- Criteria for Building Climate Scenarios -- Chapter 4 - Hydrology Analysis -- WEAP Model -- Development of a Glacier Module -- The Páramo Module -- Chapter 5 - Testing the Hydrology Tool at Basin Level -- Calibration in Nonglaciated Sub-basins -- Calibration and Validation: The Santa River Basin -- Calibration and Validation: Rímac-Mantaro River Basins -- Chapter 6 - Results from the Hydrology Analysis -- Visualization of Climate Change Impacts on Rivers in Peru -- Visualization of Climate Change in the Santa Basin -- Visualization of Climate Change in the Rímac and Mantaro Basins -- Results -- Chapter 7 - Conclusions -- General Conclusions -- Moving Forward -- Lessons Learned -- References -- Appendixes -- Appendix 1. IPCC-Emissions Scenarios -- Appendix 2. Verification of the Ability of the Simulated Dataset to Reproduce Observed Precipitation Behavior (draft) -- Appendix 3. Subgrid Orography Scheme -- Appendix 4. Technical Report on Glacier and High-elevation Wetland Model Selection and Parameterization -- Appendix 5. Páramo Module in WEAP -- Appendix 6. Calibration of Nonglaciated Sub-basins -- Appendix 7. Final Calibration-Validation of the Santa River Model -- Back Cover.