The FEMA flood map for Dorchester County became effective on July 18, 2017 and resulted in very few changes.
The revised Berkeley County flood maps were effective on December 7, 2018. The map changes affected two main areas. One was Pimlico Subdivision on the western branch of the Cooper River. Here many homes moved from Flood Zone X to Flood Zone AE. Thus, some homeowners will need to purchase flood policies as required by their mortgage companies.
The other affected area was Daniel Island. This area had some homes move from Flood Zone AE to Flood Zone X. Homeowners in this category will have a Preferred Risk Policy issued in place of their present policy. Although mortgage companies do not require flood insurance in Zone X, homeowners should carefully consider all facts before doing away with their flood policy.
Others remained in Flood Zone AE but with a lower Base Flood Elevation that, in many cases, results in a slightly lower flood premium. A few homeowners moved from the VE Flood Zone to the AE Flood Zone.
The Charleston County map revision date still has not been determined but is expected to be between October 2019 and March 2020.