Jeff Davis County is a county located in the southeastern part of the U.S. state of Georgia. As of the 2020 census, the population was 14,779. The county seat is Hazlehurst. The county was created on August 18, 1905, and named for Jefferson Davis, the only Confederate president.

The Altamaha River is a major river in the U.S. state of Georgia. It flows generally eastward for 137 miles (220 km) from its origin at the confluence of the Oconee River and Ocmulgee River towards the Atlantic Ocean, where it empties into the ocean near Brunswick, Georgia. No dams are directly on the Altamaha, though some are on the Oconee and the Ocmulgee. Including its tributaries, the Altamaha River's drainage basin is about 14,000 square miles (36,000 km2) in size, qualifying it among the larger river basins of the US Atlantic coast.