The commissioners to be appointed by the corporate authorities of Savannah shall be appointed for the Tybee Bar and the Savannah River and the several bars and inlets north of Sapelo Bar. Commissioners to be appointed by the corporate authorities of Darien shall be appointed for Sapelo Bar and the Altamaha River and the several bars and inlets south of Sapelo Bar as far as St. Simon's Bar. Commissioners to be appointed by the corporate authorities of Brunswick shall be appointed for St. Simon's Bar, Turtle River, St. Andrew's Bar, and the several bars and inlets north of and including the Great Satilla River. Commissioners to be appointed by the corporate authorities of St. Marys shall be appointed for St. Marys Bar and all bars and inlets between St. Marys Bar and St. Andrew's Bar.