Salt‐Water Movement in the Principal Artesian Aquifer of the Savannah Area, Georgia and South Carolina a

Abstract The Savannah area obtains most of its water supply from the principal artesian aquifer. The aquifer consists of limestones of middle and late Eocene age. Unflushed salty water is present in the lower water‐yielding zones of the aquifer in the eastern part of the area and sea water is entering the upper water‐yielding zones in the northeastern part of the area. The salty water in the lower zones and the upper zones is moving slowly toward Savannah because a cone of depression created by pumping has reversed the natural hydraulic gradient.