North Georgia relies on surface water sources for 99 percent of its water supply. The Metro Water District does not import water from outside its boundaries. It relies on waters flowing through its five major river basins: Chattahoochee, Etowah (sub-basin of the Coosa), Flint, Ocmulgee and Oconee. Because the area has variable rainfall, no natural lakes and relatively small water supply where these rivers begin, we must rely on man-made reservoirs to store water during rainy periods to use during dry times and drought. We work to conserve these precious resources to meet the needs of metro Atlanta and downstream.