The eastern half of Gordon County is located in the Coosawattee River sub-basin of the ACT River Basin (Coosa-Tallapoosa River Basin). Most of the western half of the county is located in the Oostanaula River sub-basin of the same larger ACT River Basin, while a small northerly portion of the county, between Resaca and Industrial City, is in the Conasauga River sub-basin of the ACT River Basin.
The eastern half of Gordon County is located in the Coosawattee River sub-basin of the ACT River Basin (Coosa-Tallapoosa River Basin) Most of the western half of the county is located in the Oostanaula River sub-basin of the same larger ACT River Basin while a small northerly portion of the county between Resaca and Industrial City is in the Conasauga River sub-basin of the ACT River Basin