Lake Lanier (officially Lake Sidney Lanier) is a reservoir in the northern portion of the state of Georgia in the U.S.A. It was created by the completion of Buford Dam on the Chattahoochee River in 1956, and is also fed by the waters of the Chestatee River. The lake encompasses 38,000 acres (150 km2) or 59 square miles of water, and 692 miles (1,114 km) of shoreline at normal level, a "full summer pool" of 1,071 feet (326 m) above mean sea level.
Named for American poet Sidney Lanier, it was built and is operated by the U.S. Army Corps of Engineers for flood control and water supplies. It is patrolled by the Georgia Department of Natural Resources (GDNR).