Dams positively affect natural resources (environmental benefits), including flood control (help prevent the loss of life), water supply (reservoirs that supply water for many uses, including industrial), hydroelectric power (hydropower is considered clean because it does not contribute to global warming, air pollution or ozone depletion), waste management (provide environmental protection, such as the retention of hazardous materials/detrimental sedimentation), and wildlife habitat (protection of wildlife in that area).