a place where water is stored (artificial lake)
Reservoir
a large stream of water that flows toward a lake or ocean
River
a body of water surrounded by land
Lake
drops of water from clouds
Rain
a wall built across a river to block water
Dam
collect, treat, and distribute clean water
Water treatment plant
removing unwanted solid materials from liquids
Filtration
a deep hole in the ground from which people get water
Well
