Effects, Assessments, and Optimizations of Water Resources under Climate Change: Approaches and Applications presents a systematic exploration of how climate change is reshaping the global water resources. From assessing the impacts of temperature and precipitation extremes to addressing the spatial variability in water stress, the book offers innovative methods and solutions for sustainable water management. The chapters focus on the use of advanced hydrological models, ecological footprint methods, and optimization approaches to manage water resources efficiently under climate change scenarios. Additionally, it includes comprehensive case studies that demonstrate the practical application of these methods in real-world water management, providing readers with actionable insights and strategies for planning water resources under climate change. This is a necessary guide for students and researchers, as well as for policymakers, and water resource managers seeking practical and scientific strategies for securing water resources in the face of climate uncertainty.