FEMA has made final flood hazard determinations for Sevier County, Tennessee and Incorporated Areas, and established Nov. 13, 2026 as the effective date for the new Flood Insurance Rate Maps (FIRMs) and supporting Flood Insurance Study. The notice was published in the Federal Register on Aug. 6, 2026 under Docket No. FEMA-B-2550.
Which communities are affected?
Four, per the Federal Register table:
- City of Gatlinburg — City Hall, 1230 East Parkway, Gatlinburg
- City of Sevierville — City Hall, 120 Gary Wade Boulevard, Sevierville
- Town of Pittman Center — 2839 Webb Creek Road, Sevierville
- Unincorporated areas of Sevier County — Public Works Building, 227 Cedar Street, Sevierville
What actually changes on a new FIRM?
New or modified Base Flood Elevations, base flood depths, Special Flood Hazard Area boundaries and zone designations, and regulatory floodways. In plain terms: the line on the map that decides whether your property is in a high-risk flood zone can move — onto your parcel or off of it.
Why does that matter to a homeowner?
Three reasons.
- Lender requirement. If a federally backed mortgage sits on a structure that lands in a Special Flood Hazard Area, flood insurance is mandatory. Not advisable — mandatory.
- Homeowners policies do not cover flood. Rising water is excluded from a standard homeowners policy. That gap does not close by itself.
- Timing affects price. Buying a policy before a new map takes effect can preserve grandfathering options on rating. After Nov. 13 the new map is the map.
What if the map moves you out of a high-risk zone?
Good news, with a caveat: the requirement can disappear, but the water does not read maps. FEMA's own guidance notes that in low-to-moderate risk areas a property is roughly five times more likely to experience a flood than a fire over 30 years, and a National Flood Insurance Program policy in a preferred-risk area can cost under about $400 a year. Dropping coverage the day the map changes is a decision worth pricing out first.
| Key detail | Value |
|---|---|
| New FIRM effective date | Nov. 13, 2026 |
| Federal Register publication | Aug. 6, 2026 |
| Docket | FEMA-B-2550 |
| Letter of Final Determination date | May 13, 2026 |
| Communities named | Gatlinburg, Sevierville, Pittman Center, unincorporated Sevier County |
| Standard homeowners flood coverage | Excluded |
| Typical NFIP preferred-risk premium | Under ~$400/year (FEMA) |
| New-policy waiting period (NFIP, typical) | 30 days |
What to do between now and November
- Look up your address on FEMA's Map Service Center and note your current zone.
- Ask your city or county floodplain administrator to show you the preliminary map for your parcel — the offices are listed above.
- Get a flood quote now, not on Nov. 12. NFIP policies generally carry a 30-day waiting period before coverage starts.
- If you are buying in Sevier County this fall, ask the lender to confirm the zone under both the current and the incoming map before you lock a closing date.
Sources: Federal Register, "Final Flood Hazard Determinations," 91 FR 50874, Aug. 6, 2026; FEMA Letters of Final Determination list for FIRM effective date Nov. 13, 2026 (LFD dated May 13, 2026); FEMA Flood Map Service Center and National Flood Insurance Program guidance.
