Augusta is a city on the central eastern border of the U.S. state of Georgia. The city lies directly across the Savannah River from North Augusta, …Augusta is a city on the central eastern border of the U.S. state of Georgia. The city lies directly across the Savannah River from North Augusta, South Carolina at the head of its navigable portion. Augusta, the third most populous city in Georgia, is situated in the Fall Line region of the state.