closeup of water flowing over a dam illustrating the idea of power and the challenge of managing natural resources

water cascade dam flow stream river splash current hydropower energy hydroelectric nature liquid freshwater aquatic wet environment hydrology fluidity turbulence movement foam whitewater rushing gushing natural runoff rain precipitation texture clear blue gray blur closeup macro shallow depth field focus selective feature hydrodynamic channel spillway watercourse torrent flowing illustrating idea power challenge managing resources resources generative