The county commission is hereby authorized to enact an ordinance regulating the platting and recording of any subdivision of land as defined by this chapter lying within the flood-prone area of the county. The county planning commission shall have the authority to prepare and submit to the county commission for its consideration and adoption regulations governing the subdivision of land within its jurisdiction. Before the county commission may adopt subdivision regulations or any amendment thereto under the provisions of this chapter, the said county commission shall hold a public hearing on the proposed regulations. A notice of said public hearing shall be given once a week for two consecutive weeks in a newspaper of general circulation in the county, and a copy of the proposed subdivision regulations shall be made available to any interested person before said public hearing. A copy of the subdivision regulations as adopted shall be certified to the office of the judge of probate.