Blog · October 14, 2026 · Tennessee
Loudon County Flood Zone Map in Tennessee
FEMA's free flood maps and the Loudon County parcel viewer, used together for property near Philadelphia.
Main page: Loudon County, TN GIS & Parcel Viewer (official map link, Loudon County facts and neighboring maps).
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A Loudon County flood zone map check belongs in the due diligence for any Loudon County property, from a house lot in Farragut to farm ground near Greenback. For any tract in Loudon County, Tennessee, the answer affects insurance, permits and resale.
Below are the FEMA links, a plain reading of the zone labels, notes on where water shapes land around Farragut, and short answers to common questions.
Where to see the official Loudon County flood zone map
The authoritative source for a Loudon County flood zone map is FEMA, so begin at the FEMA Flood Map Service Center. Download the FIRM panel FEMA lists as effective for that part of Loudon County. For an interactive view of Loudon County, the National Flood Hazard Layer viewer is easier to use, which shows how much of a Loudon County parcel sits inside the zone. Next, the Tennessee Property Viewer confirms which Loudon County parcel you're looking at. Match the Loudon County lines and acreage to the FEMA view, since flood maps do not draw property lines in detail.
Opening the Loudon County parcel viewer
There's no separate Loudon County parcel site to hunt for; the Tennessee Property Viewer carries the county's parcels along with the rest of Tennessee. After selecting Loudon County, results show the map, group and parcel numbers used on Tennessee tax records for land near Greenback. If the official address for the Loudon County, TN map ever changes, our directory page carries the current link for Lenoir City and the rest of the county.
What the flood zone letters mean
Any Loudon County parcel shaded as Zone A, AE, AH or AO sits in what FEMA calls a Special Flood Hazard Area, land with a 1-percent chance of flooding in any given year (the base or 100-year flood). Where a Loudon County tract shows Zone AE, there's a base flood elevation to compare a building against; in Zone A there is not one. Shaded Zone X around Philadelphia is moderate risk, between the 1-percent and 0.2-percent annual chance lines. Unshaded X (or C) on the Loudon County panel means minimal risk.
Where water shapes land in Loudon County
Parcels touching Little Tennessee River deserve a FEMA check before anything else in Loudon County. Lines on those Loudon County parcels frequently follow the water, so part of the tract can be mapped as high risk. A creek near Greenback that shows no detailed zone, which is why it is worth walking the ground after a heavy rain.
Seller questions about flood history
Request any past flood claims history for a Loudon County property before closing; it tells you more than the map alone. An agent working in Loudon County can quote flood coverage once you know the zone for the lot near Greenback.
Insurance, permits and map changes
Insurance is the practical stake for a Loudon County buyer. Where a building in Philadelphia sits in a Special Flood Hazard Area and is financed by a regulated or federally insured lender, federal rules call for flood insurance under the Flood Disaster Protection Act, wherever the community joins the NFIP. In Zone X near Philadelphia, insurance is a choice, not a mandate; pricing a policy for land near Greenback is still worth a call. If a building near Greenback sits above the flood line, FEMA's LOMA process allows a review, supported by elevation data from a licensed surveyor. Placing fill on low ground near Philadelphia has to meet local floodplain rules, so call the county or the town office in Philadelphia before work starts.
Loudon County flood zones questions
Does a 100-year floodplain near Greenback flood only once a century?
No; land near Greenback in the 100-year floodplain carries a 1-in-100 chance in any single year, and two floods in one decade near Farragut are possible.
Is my Farragut address in a flood zone?
Look it up at FEMA's Flood Map Service Center, then match the parcel lines in the Tennessee Property Viewer; for land near Greenback, a zone starting with A or V is high risk.
Is flood insurance required for a Zone X lot in Farragut?
For a Zone X house near Greenback, federal rules do not require flood insurance; buying it is still a choice worth pricing.
Can I build in a flood zone in Loudon County?
Building in a Special Flood Hazard Area near Farragut typically needs a floodplain permit and may require elevating the structure, so check with the county floodplain administrator.
What is a base flood elevation for a Loudon County property?
On the map covering Farragut, it is the projected water surface in the base flood, and it is printed in AE zones.
My lot in Farragut shows Zone AE. What does that mean?
Yes, a tract near Greenback in Zone AE is high risk: a 1-percent-annual-chance floodplain where FEMA lists a base flood elevation.
Open the official Loudon County, TN parcel map Loudon 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.