Blog · October 14, 2026 · South Carolina
Berkeley County Flood Zone Map (South Carolina)
How to check if a property in Berkeley County sits in a FEMA flood zone, and what the answer means for a buyer near Charleston.
Main page: Berkeley County, SC GIS & Parcel Viewer (official map link, Berkeley County facts and neighboring maps).
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A Berkeley County flood zone map check belongs in the due diligence for any Berkeley County property, from a house lot in Jamestown to farm ground near Goose Creek. For any tract in Berkeley County, South Carolina, the answer affects insurance, permits and resale.
The sections below go from the FEMA search to the Berkeley County parcel record, then cover insurance, permits and map changes near Goose Creek.
How to use the Berkeley County flood zone map
FEMA's official flood maps for Berkeley County are free at the FEMA Flood Map Service Center. Download the FIRM panel FEMA lists as effective for that part of Berkeley County. On acreage outside Hanahan, the National Flood Hazard Layer viewer is easier to use, which displays how much of a county parcel sits inside the zone. Then open the Berkeley County ArcGIS parcel map for Berkeley County to confirm the parcel near Hanahan. If the Berkeley County viewer has a floodplain layer, treat it as a convenience copy and confirm on FEMA's map.
Search Berkeley County parcels by owner, address or ID
Berkeley County publishes its parcels on the Berkeley County ArcGIS parcel map, which runs on an Esri ArcGIS web map, free to use for a lot in Charleston or a tract near Goose Creek. Use the search box for an address in Charleston or a parcel number, or simply zoom in and click a tract near Goose Creek. For a backup route to the map covering Goose Creek, our Berkeley County directory entry keeps the link current.
High, moderate and minimal risk in Berkeley County
Any Berkeley County parcel shaded as Zone A, AE, AH or AO sits in what FEMA calls a Special Flood Hazard Area, meaning FEMA estimates a 1-percent annual chance of flooding. Where a Berkeley County tract displays Zone AE, there's a base flood elevation to compare a building against; in Zone A there is not one. If a Berkeley County parcel displays shaded Zone X, it falls between the base flood and the 500-year flood. Clear, unshaded X near Hanahan is outside the 500-year floodplain.
Creeks, rivers and low ground in Berkeley County
In Berkeley County, look closest at tracts along Hell Hole Swamp and Wambaw Swamp. On many tracts close to Hanahan, the zone covers the low ground by the water while the homesite near the road is outside it. A creek near Goose Creek that displays no detailed zone can still flood; FEMA says moderate- and low-risk areas still carry risk.
Questions to ask before buying in Berkeley County
Request any past flood claims history for a Berkeley County property before closing; it tells you more than the map alone. An agent working in Berkeley County can quote flood coverage once you know the zone for the lot near North Charleston.
When the map affects a deal
Here's why the zone matters at a closing in Hanahan. When a structure near Goose Creek is mapped in a high-risk zone and carries a federally backed mortgage, federal rules call for flood insurance; that applies where the local government around Goose Creek is in the National Flood Insurance Program. Outside the A zones around Goose Creek, coverage is optional, though a lender in South Carolina can still ask for it. Where a structure near Hanahan looks higher than the shading suggests, a Letter of Map Amendment request is the formal route, usually backed by an elevation certificate from a surveyor who works in the county. New construction in a Berkeley County Special Flood Hazard Area has to meet local floodplain rules; the Berkeley County floodplain administrator can say what applies.
Berkeley County, SC: common questions
Is Zone AE near Bonneau high risk?
For a Berkeley County parcel, Zone AE means a Special Flood Hazard Area with a 1-percent annual chance of flooding and a published base flood elevation.
Can I build in a flood zone in Berkeley County?
Often, but local floodplain rules apply; ask the county or town building office in Hanahan well before you buy.
What is a base flood elevation for a Berkeley County property?
On the map covering Hanahan, the base flood elevation marks how high the 100-year flood is expected to rise; elevation certificates in Berkeley County are measured against it.
What does 100-year flood mean for Berkeley County land?
No; land near Bonneau in the 100-year floodplain has a 1-percent chance of flooding every year, and two floods in one decade near Hanahan are possible.
My house near Bonneau is in Zone X. Is insurance required?
FEMA doesn't require it for a Zone X lot in Hanahan, but coverage is available and some lenders ask for it.
Is there a floodplain layer in the Berkeley County ArcGIS parcel map?
Check the layer list in the Berkeley County ArcGIS parcel map; if Berkeley County includes a floodplain layer, confirm the zone on FEMA's map anyway.
Open the official Berkeley County, SC parcel map Berkeley County in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.