Frequency of Updating Flood Maps?

Flood zone designations may be established or revised when new and more accurate information becomes available because of a FEMA-funded restudy or because the community makes the information available to FEMA. Several factors influence the frequency with which flood maps may be updated, such as the extent of new development and the completion of flood-control projects. To learn when an area is going to be updated, please visit the  FloodSmart  website where you can  search by zip code.