The drainage and dewatering system play a crucial role in managing water within the facility. It involves the implementation of various components and strategies to control water levels, prevent flooding, and maintain the efficient operation of the plant. The system typically includes drainage channels, pumps, and dewatering wells to redirect excess water away from critical areas. Proper design and maintenance of the drainage and dewatering system are essential to ensure the safety and functionality of the hydro power plant, especially during periods of heavy rainfall or unexpected water influx.