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The Official Web Site of the State of South Carolina

Sullivan's Island's 2020 Drinking Water Quality Report is available for review by clicking here. 

Floodplain Maps & Links

The Town offers a variety of tools and maps, including historic maps, to assist the homeowner in understanding the link between flood plain management and external factors such as shoreline and sea level changes. You may also view our Mapping Services page for additional interactive and static maps. Local staff are ready to assist you with any questions.  


Town of Sullivan's Island Base Flood Elevation Map (PIC)Base Flood Elevation Map
This map will help you determine what flood zone your property is in. 





Potential Storm Surge Inundation Model (PDF) Potential Storm Surge Inundation Model
 This document contains aerial views of Sullivan's Island with layers of illustrations that simulate different inundations of storm surge based on the Saffir-Simpson Hurricane Scale.



Know Your Zone Evacuation Map (Link)

 Know Your Zone Map
This map helps you determine your evacuation zone. For more information on planning your evacuation route, please visit our Emergency Preparedness page. 





The Town offers the following links to a number of county, state and federal agencies to further assist you with your flood plain management questions

Charleston County Resources

South Carolina State Resources

Federal Resources

Shoreline & Sea Level Information

Climate Tools

Additional Documentation