Waynesville, MO Environmental Rules: Flood Zones (2026)

Chapter 425, Floodplain Management, adopted by Ordinance No. 1468 on January 21, 2010, applies under Section 425.040 to every numbered and unnumbered A Zone and AE Zone shown on the Pulaski County Flood Insurance Rate Maps, identified by panel numbers 29169C0250D, 29169C0253D, 29169C0254D, 29169C0255D, 29169C0260D, 29169C0261D and 29169C0262D, dated May 3, 2010. Inside those zones, Section 425.040 bars any development except through a floodplain development permit issued by the City Council of Waynesville or its designated representative, and Section 425.110 confirms the permit is required for all proposed construction or other development, including manufactured homes, with a separate permit required for each structure.

Section 425.050 designates the Building Inspector as the Floodplain Administrator, who under Section 425.130 reviews every application to confirm the site is reasonably safe from flooding, verifies that other required federal, state or local permits are in hand, and maintains elevation records for new or substantially improved structures. Section 425.150 sets the baseline conditions for any permit in an A or AE Zone: until a floodway is officially designated, no new construction, substantial improvement or fill is allowed unless it is shown the cumulative effect will not raise the base flood elevation more than one foot at any point, and every new structure must be anchored against flotation and built of flood-resistant materials. Subdivisions or manufactured home parks of five acres or 50 lots, whichever is smaller, must include base flood elevation data with their proposal.