Charleston has been ranked among the most flood-exposed cities in the United States by NOAA. The city averages 10 or more tidal flooding days per year on the peninsula, with NOAA projecting significant increase by 2030 under current sea-level-rise trajectories. Charleston has sustained federally declared flood disasters from hurricanes in 1989, 2016, 2019, and 2022.
Stormwater system overload is the most common water damage driver in Charleston. Combined stormwater and sewer infrastructure in older neighborhoods regularly exceeds capacity, forcing water through floor drains and crawl space vents. Aging pre-modern housing stock — without waterproof foundation coatings or backflow prevention — amplifies every rainfall event's structural impact.
South Carolina homeowners policies cover sudden internal water losses; flood damage requires separate NFIP or private flood coverage. Ask your contractor for daily moisture logs and Xactimate-formatted estimates before the adjuster visits. Call for 24/7 emergency extraction the moment water enters your Charleston property.