(a) To restrict or prohibit the subdivision of lands for uses which are dangerous to health, safety, or property in times of flood or which, with reasonably anticipated improvements, will cause excessive increases in flood heights or velocities.
(b) To require that each subdivision lot in an area vulnerable to floods be provided with a safe building site with adequate access and that public facilities which serve such uses will be installed with protection against flood damage at the time of construction; and
(c) To protect individuals from buying lands which are unsuited for intended purposes because of flood hazards by prohibiting the subdivision of unprotected flood hazard lands, requiring that flood hazard areas be delineated on all plats, and reserving through deed restrictions areas not suitable for development.