This book discusses the threats and impacts of flash floods in Vietnam on environmental, human, and socio-economic resources, and covers monitoring, forecasting, warning, urgent action plans, and prevention solutions. While the work focuses on cases in Vietnam, it is applicable to many regions in the world that experience flash flooding as a common occurrence. Through data collection, field surveys, and investigational statistics from a specialized group of authors, the book provides comprehensive background knowledge on flash floods, and a flash flood hazard map using remote sensing and GIS techniques that can be used to assess the likelihood and potential impacts of flash floods before vulnerable areas and populations can be threatened. The intended audience of this manuscript is people interested in the fields of weather, environment, and natural disasters. It will serve as a reference for environmental managers, administrators of disaster planning, and extreme weather scientists.