This book focuses on sustainable water management perspective and how to use this knowledge to ensure resilient development. Sustainable water resource management is an essential aspect of resilient development as it helps to ensure the availability and accessibility of safe, clean, and equitable water for both present and future generations. Implementing sustainable water management practices is crucial to address the increasing water issues caused by climate change, urbanization, and population growth. This book focuses on specific areas where meticulous water resource-related factors intermingle with societal needs and thus fulfills the demand of the greater humanity. Water security, hydrometeorological forecasting and warning, ecosystem services and functions, transboundary conflicts and opportunities for cooperation in common/ mutual interests, sustainable fisheries, and water management are some of the focusing areas of this book that firmly connects science and society. The book is a collection of selected papers from the 9th International Conference on Water and Flood Management (ICWFM). ICWFM has been held biennially since 2007 by the Institute of Water and Flood Management (IWFM) of Bangladesh University of Engineering and Technology (BUET).