(a) It shall be the function and duty of the county planning commission to make and maintain comprehensive surveys and studies of existing conditions and probable future developments in the flood-prone area of the county and to prepare comprehensive plans for physical, social, and economic growth as will best promote the public health, safety, morals, convenience, prosperity, or the general welfare as well as efficiency and economy in the development of the flood-prone area of the county. The county planning commission shall have the authority to:
(1) Promote public interest and understanding of the economic and social necessity for long-term, coordinated county planning.
(2) Confer and cooperate with the federal, state, municipal, and other county and regional authorities regarding matters pertaining to or affecting the planning or development of said county, or vice versa, for the purpose of assuring proper coordination of county development with that of other political subdivisions.
(3) Prepare and recommend for adoption to the appropriate county commission or authorities a zoning ordinance and map for the flood-prone area of the county.
(4) Prepare and recommend for adoption to the appropriate county commission or authorities regulations for the subdivision of land within the flood-prone areas of the county jurisdiction and administer the regulations that they may be adopted.
(b) Upon request of the county planning commission, the county commission may, from time to time, for the purpose of special surveys under the direction of the county planning commission, assign to the county planning commission members of the staff or the personnel of any county administrative department, bureau, or agency or may direct any such department, bureau, or agency to make special surveys or studies for the county planning commission. All public officials, departments, and agencies may upon request furnish the county planning commission within a reasonable time with such available information as it may require for its work. The county planning commission, its members, officers, and employees, in the performance of their functions may enter upon any land and make necessary examinations and surveys. In general, the commission shall have such powers as may be appropriate to enable it to fulfill its functions and duties.