Sec. 15. (a) To assure the promotion of public health, safety, convenience, and the general welfare within the commission's jurisdiction, the commission shall prepare a proposed initial flood plain zoning ordinance. The ordinance must provide for the following:
(1) The classification of all land within the jurisdiction of the county or municipality into flood plain or nonflooding areas.
(2) The regulation of land use and the location or construction of buildings and other structures within the areas designated as flood plain areas.
(b) In establishing flood plain districts and regulations, the commission may use the special flood hazard area maps supplied by the Federal Insurance Administration or any other criteria approved by the department.