Dams and reservoirs are essential aspects of human life today. Without these structures, many people living in areas where water is naturally scarce would be left high and dry. Dams and reservoirs can occur naturally. However, people often interfere with nature to create their own. Damming rivers and creating reservoirs isn’t always a completely beneficial practice. To create a reservoir, large areas of land have to be sacrificed. This book explores the processes associated with damming rivers and building reservoirs as well as the positive and negative outcomes of doing so.