Lake Oconee is a reservoir in central Georgia, United States, on the Oconee River near Greensboro and Eatonton. It was created in 1979 when Georgia Power completed the construction of the Wallace Dam on the Oconee River. Lake Oconee runs through Georgia's Morgan, Greene, and Putnam counties and is separated from its sister lake, Sinclair, by Wallace Dam. Oconee is the name of an ancient Creek town.