In a reservoir, a dam serves a crucial role as a barrier that obstructs the natural flow of water. It creates a physical barrier, usually built across a river or within a valley, to impound and store water. The dam effectively holds back the water, allowing it to accumulate in the reservoir basin behind the dam.
By controlling the release of water through an outlet structure equipped with gates or valves, the dam manages the water level, ensuring that the reservoir can serve its intended purposes, such as water supply, flood control, hydroelectric power generation, and recreational activities. Essentially, the dam is the linchpin of the reservoir, regulating the flow of water to meet various human and environmental needs.
