A spillway is a structure used to manage excess water flow from a dam or reservoir. Its primary purpose is to safely direct water away from the dam to prevent overflow and potential damage. Spillways can be designed in various forms, including open channels or gated structures, depending on the specific needs of the dam and surrounding environment. When water levels rise too high, the spillway allows the excess water to flow out, maintaining a safe level in the reservoir. This helps protect both the dam and the areas downstream from flooding. Proper design and maintenance of spillways are crucial for the safety and efficiency of water management systems.