![]() Poorly planned development in floodplains can lead to stream-bank erosion, loss of valuable property, increased risk of flooding to downstream properties and degradation of water quality. Floodplains are scenic, valued wildlife habitat, and suitable for farming. Understanding and protecting the natural functions of floodplains helps reduce flood damage and protect resources. Additional Informationįloodplains are a natural component of the City of Charleston environment. Please be advised all work (including painting, interior finishes, etc.) in a Special Flood Hazard Area requires a permit. V-Zone Breakaway Wall Certificate (PDF).You may need to submit the following documents when applying for building and trade permits: flooding or areas outside the 1 and 0.2 annual chance floodplains. Steps to Take if Your New Building Construction or Renovation Is Located in a Flood Zone Zone D: Areas in which flood hazards are undetermined but possible.Zone VE: Coastal flood with velocity hazard (wave action) base flood elevations determined.Zone V: Coastal flood with velocity hazard (wave action) no base flood elevations determined.Zone A99: To be protected from 100-year flood by Federal flood protection system under construction no base flood elevations determined.For areas of alluvial fan flooding, velocities also determined. Zone AO: Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain) average depths determined.Zone AH: Flood depths of 1 to 3 feet ( usually areas of ponding) base flood elevations determined.Zone AE: Base flood elevations determined.Zone A: No base flood elevations determined. ![]()
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