Blog · October 14, 2026 · Mississippi
Alcorn County Flood Zone Map, Mississippi
FEMA's free flood maps and the Alcorn County parcel viewer, used together for property near Kossuth.
Main page: Alcorn County, MS GIS & Parcel Viewer (official map link, Alcorn County facts and neighboring maps).
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An Alcorn County flood zone map check belongs in the due diligence for any Alcorn County property, from a house lot in Corinth to farm ground near Rienzi. For any tract in Alcorn County, Mississippi, the answer affects insurance, permits and resale.
We'll cover finding an Alcorn County address on FEMA's map, what Zone A, AE and X mean, how the county viewer fits in, and what to do if the map looks wrong.
How to check the Alcorn County flood zone map
FEMA's official flood maps for Alcorn County are free at the FEMA Flood Map Service Center. Download the FIRM panel FEMA lists as effective for that part of Alcorn County. If the PDF panel for Alcorn County is hard to read, FEMA's National Flood Hazard Layer viewer draws the zones over aerial imagery, which lists how much of an Alcorn County parcel sits inside the zone. Next, the Alcorn County ArcGIS parcel map confirms which Alcorn County parcel you're looking at. Match the Alcorn County lines and acreage to the FEMA view, since flood maps do not draw property lines in detail.
Finding the tract on the Alcorn County map
Alcorn County publishes its parcels on the Alcorn County ArcGIS parcel map, which runs on an Esri ArcGIS web map, free to use for a lot in Farmington or a tract close to Glen. Most people track down their Alcorn County tract fastest by searching an address in Glen, then clicking the outline. If the official address for the Alcorn County, MS map ever changes, our directory page carries the current link for Farmington and the rest of the county.
Zone A, AE and X in plain English
On the FIRM covering Alcorn County, zones that start with A or V are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any given year (the base or 100-year flood). Zone AE near Glen means FEMA published a base flood elevation; plain Zone A means no detailed elevation was studied. If an Alcorn County parcel lists shaded Zone X, it is moderate risk, between the 1-percent and 0.2-percent annual chance lines. Unshaded X (or C) on the Alcorn County panel means minimal risk.
Where water shapes land in Alcorn County
Parcels touching Tuscumbia River and Hatchie River deserve a FEMA check before anything else in Alcorn County. On many parcels near Kossuth, the zone covers the low ground by the water while the homesite near the road is outside it. A creek near Glen that lists no detailed zone, so treat an unmapped channel as a reason to ask questions, not proof the ground stays dry.
A short buyer checklist for Corinth
Request any past flood claims history for an Alcorn County property before closing; it tells you more than the map alone. Quotes for land near Biggersville depend on the zone and the building's elevation, so bring both to the agent.
When the map affects a deal
Here's why the zone matters at a closing in Kossuth. When a structure near Glen sits in a Special Flood Hazard Area and carries a federally backed mortgage, flood insurance is mandatory; that applies where the local government around Glen is in the National Flood Insurance Program. In Zone X near Kossuth, federal rules do not require a policy, although some lenders require it anyway. Where a structure near Kossuth looks higher than the shading suggests, FEMA's LOMA process allows a review, supported by elevation data from a licensed land surveyor. Building or filling inside a mapped zone near Kossuth has to meet local floodplain rules; the county floodplain administrator can say what applies.
Alcorn County flood zones questions
Is there a floodplain layer in the Alcorn County ArcGIS parcel map?
Some county viewers carry a flood layer, but FEMA's Flood Map Service Center is the official source for Alcorn County.
Can a flood zone in Alcorn County be changed?
An owner near Kossuth can request a Letter of Map Amendment from FEMA with elevation data, most often from a licensed land surveyor.
Do I need flood insurance in Zone X in Alcorn County?
Not under federal rules; Zone X in Alcorn County is outside the Special Flood Hazard Area, though a lender can still require coverage.
How do I know if a property in Alcorn County is in a flood zone?
Look it up at FEMA's Flood Map Service Center, then match the parcel lines in the Alcorn County ArcGIS parcel map; for land near Kossuth, a zone starting with A or V is high risk.
Do I need a permit to build in the floodplain near Glen?
Often, but local floodplain rules apply; ask the county or town building office in Glen before you buy.
Open the official Alcorn County, MS parcel map Alcorn 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.