Ga. Code § 2-6-43
Agencies of this state which have jurisdiction over or are charged with the administration of any state-owned lands lying within the boundaries of any district and agencies of any county or other governmental subdivision of the state which have jurisdiction over or are charged with the administration of any county-owned or other publicly owned lands lying within the boundaries of any such district shall cooperate to the fullest extent with the supervisors of such districts in the effectuation of programs and operations undertaken by the supervisors under this article. The supervisors of such districts shall be given free access to enter and perform work upon such publicly owned lands. The provisions of land use regulations adopted pursuant to Code Sections 2-6-35 through 2-6-38 shall be in all respects observed by the agencies administering such publicly owned lands.
OCGA § 2-6-43