TOPOGRAPHY. The State lies in both the Ap palachian and coastal plain regions, so that the surface is divided between highlands and low lands. The eastern chain (Blue Ridge) of the Appalachians, after crossing the North Carolina boundary, terminates in the northern part of the State. It has an elevation of from 3000 to 5000 feet, the latter limit being attained by only a few peaks, of which the highest is Sitting Bull Moun tain, 5046 feet above the sea. Bordering the Blue Ridge 'on the west is the Cohutta group, a con tinuation of the Unaka Mountains of Tennessee, while the northwestern corner of the State is crossed by the Lookout and Sand Mountain ranges of the Alleghanies, which terminate in Alabama. An area of about 6000 square miles in northern Georgia has an elevation of 1000 feet or more. South of the Appalachian foothills there is a broad area of uplift, the Piedmont plateau, sloping toward the Atlantic, and ter minating near the middle of the State in the coastal plain. From the southern Iimit of the plateau region to the Florida and Atlantic bor ders, the surface is little diversified except where dissected by erosion into low hills and stream valleys. The lands bordering directly on the coast are flat, and but slightly raised above sea-level. The Okefinokee Swamp, which extends across the State line into Florida, occupies an area 45 miles long by 30 miles wide. It con
tains several open lakes, but there are numerous islands and intersecting ridges that support heavy forests. Chickamauga. National Military Park (q.v.) is situated in the northwest corner of the State.
Georgia has an extensive drainage system, in cluding a few rivers of moderate size. The Savan nah River. on the eastern boundary, drains most of the eastern section. It is navigable for ocean going craft to Savannah, and for boats of 150 tons to Augusta. The Altamaha, with its head streams, the Oconee and the Ocmulgee, flows through the central part, and its waters are open to navigation by light-draught boats as far as Milledgeville and Macon. Western Georgia lies largely within the basin of the Appalachicola, which is formed by the confluence of the Flint and Chattahoochee rivers, both rising in the northern part of the State. Boats ascend the Flint to Albany, and the Chattahoochee to Columbus. Among the other important streams are the Ogeeehee, Satilla. and the Withlacoochee. When the rivers pass from the plateau region to the coastal plain, cataracts and waterfalls are usually present; they are located approximately along a line running through Augusta, Macon, and Columbus, and are the source of the industrial activity of these cities.