Natural and man-induced disasters include a wide range of events: floods, droughts, episodic pollution, structure failure, earthquakes, avalanches, landslides, and volcanic eruptions. Each type of event is unique in terms of its cause, our ability to forecast it, the degree of prevention possible, the economic consequences, and the social impact. This book, which is a compendium of papers presented at a World Meteorological Organization conference, attempts to cover all possible types of disasters related to hydrology. As might be expected with a proceedings volume, each author deals with each topic in a different manner, making categorization of this book difficult.