Mainly, the capture of hydropower, the creation of large reservoirs, covers all these gains. The construction of dams has numerous benefits for society. The opportunity presents itself for many sports and outdoor activities. For example, man-made lakes allow for boating, swimming, fishing and more. Impounded hydropower also allows for greater control over potential emergencies, such as floods and water shortages (dams can be closed to save water). In rural areas, reservoirs provide easily accessible water that farmers can use to irrigate crops. The benefits of hydropower go far beyond the climate