Flood zones, explained

FEMA’s National Flood Hazard Layer labels every parcel with a zone. The letters that trigger the highest stakes are the Special Flood Hazard Areas (SFHA): zones A, AE, AH, AO, AR, A99, V, and VE. For federally backed mortgages, flood insurance is required when a property sits in one of these.

Zone AE is the most common high-risk zone in Buncombe County — high flood risk with a base flood elevation. Zones AH and AO are shallow-flooding variants. Zone V is the coastal counterpart, which matters less here but means the same in insurance terms.

Zone X means moderate-to-low flood risk, and insurance is not federally required. Zone X (shaded) is listed separately at 0.2% annual chance — moderate, not zero. Zone D means undetermined: a gap in the data, which is worth knowing before you buy.

The flood panel returns the zone from the current effective flood layers — FEMA NFHL first, Buncombe County’s DFIRM/FRIS layers as the canonical fallback — then cross-references NC’s Floodplain Mapping data, which is often more current.

It also checks for LOMA/LOMR cases: the formal corrections property owners file when a designation is wrong. A LOMA can matter more than the letter on the map.

If a lookup comes back without a designation, the panel treats the area as moderate-to-low risk (Zone X) and says to verify with the official map — it won’t invent a flood zone.