Chattahoochie River
| Chattahoochee River | |
 Chattahoochee River at Jones Bridge Park in Peachtree Corners, Georgia
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| Country | United States |
|---|---|
| States | Georgia, Alabama, Florida |
| Source | near Jacks Knob |
| - location | Blue Ridge Mountains, Chattahoochee National Forest, Georgia |
| - elevation | 3,550 ft (1,082 m) |
| - coordinates | 34°49′26″N 83°47′28″W / 34.82389°N 83.79111°W |
| Mouth | Apalachicola River |
| - location | confluence with Flint River, near Jim Woodruff Dam |
| - elevation | 75 ft (23 m) |
| - coordinates | 30°42′32″N 84°51′50″W / 30.70889°N 84.86389°WCoordinates: 30°42′32″N 84°51′50″W / 30.70889°N 84.86389°W |
| Length | 430 mi (692 km) |
| Basin | 8,770 sq mi (22,714 km2) |
| Discharge | |
| - average | 10,090 cu ft/s (286 m3/s) |
| - max | 195,000 cu ft/s (5,522 m3/s) |
| - min | 0 cu ft/s (0 m3/s) |
 Map of the Apalachicola River system with the Chattahoochee highlighted in dark blue.
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The Chattahoochee River forms the southern half of the Alabama and Georgia border, as well as a portion of the Florida border. It is a tributary of the Apalachicola River, a relatively short river formed by the confluence of the Chattahoochee and Flint rivers and emptying from Florida into Apalachicola Bay in the Gulf of Mexico. The Chattahoochee River is about 430 miles (690 km) long. The Chattahoochee, Flint, and Apalachicola rivers together make up the Apalachiacola–Chattahoochee–Flint River Basin (ACF River Basin). The Chattahoochee makes up the largest part of the ACF's drainage basin.
The source of the Chattahoochee River is located in Jacks Gap at the southeastern foot of Jacks Knob, in the very southeastern corner of Union County, in the southern Blue Ridge Mountains, a sub-range of the Appalachian Mountains. Its headwaters flow south from ridges that form the Tennessee Valley Divide. The Appalachian Trail crosses the river's uppermost headwaters. The Chattahoochee's source and upper course lies within Chattahoochee National Forest.
From its source in the Blue Ridge Mountains, the Chattahoochee River flows southwesterly to Atlanta and through its suburbs. It eventually turns due south to form the southern half of the Georgia/Alabama state line. Flowing through a series of reservoirs and artificial lakes, it flows by Columbus, the second-largest city in Georgia, and the Fort Benning Army base. At Columbus, it crosses the Fall Line of the eastern United States.
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