Lake Nottely Reservoir is a TVA reservoir which lies in the state of Georgia on the southeastern edge of the Georgia River watershed, nestled in the mountains and valleys of the Chattahoochee National Forest. The lake is 20 miles long and has 4,180 surface acres at normal summer pool elevations.
Construction of Lake Nottely Dam began in 1941 and was completed in 1942. The dam is 184 feet high and stretches 2,300 feet across the Nottely River. The lake has a flood-storage capacity of 100,000 acre-feet. Full pool is at 1,779 feet above M.S.L. Lake Nottely is located totally in Union County, and is a 4,180-acre TVA lake with 106 miles of shoreline nestled in the mountains just northwest of Blairsville.