Diversion Dams: Purpose, Design, and Benefits

According to Wikipedia, a diversion dam is a dam that diverts all or part of the flow of a river from its natural course into an artificial channel or canal. Unlike a storage dam, a diversion dam is generally designed to raise the water level just enough to redirect water rather than create a large reservoir. This type of hydraulic structure plays an important role in irrigation, municipal water supply, hydroelectric power generation, and water resource management.
