FEMA flood zones · Tennessee

Franklin County, Tennessee Flood Zone Map

32 flood insurance claims·$223,240 paid·2 federal flood & hurricane disasters

7% of Franklin County’s area is in FEMA’s high-risk flood zones.

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Franklin County, Tennessee. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

How Franklin County floods

Flash flooding from storms dominates the flood character of Franklin County, supported by historical records showing 52 flash flood events, 4 general floods, and 2 tropical storms over the last 30 years. Heavy rainfall from slow-moving systems can quickly overwhelm local drainage and cause sudden inundation.

The threat is demonstrated by events such as the September 2021 storms, which brought widespread rainfall of 3 to 6 inches—and localized totals of 6 to 8 inches over a few hours—causing road closures and flash flooding across the region.

Homeowners, real estate agents, and journalists should pay close attention to properties located across multiple designated zones where historical claims have occurred. NFIP data shows claims spanning several zones, including Zone A with 15 claims averaging a 1-inch recorded water depth and $7,527 payout; Zone X with 12 claims averaging a 5-inch recorded water depth and $11,534 payout; unshaded Zone X with 4 claims averaging a 4-inch recorded water depth and $2,076 payout; and Zone V with 1 claim averaging a 4-inch recorded water depth and $39,867 payout.

Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.

Where the flood claims came from

20% of Franklin County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

20 NFIP claims with a recorded rated flood zone, 1978 to date. The zone is the one FEMA used to rate that policy, which may not match today’s map. Source: OpenFEMA NFIP claims.

How deep the water got

outlet80″ door12″24″36″48″60″72″84″

In flood insurance claims here that reported a flood depth, the average was 3 inches.

Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.

Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.

Flood claims, year by year

The worst year was 2019, with 4 claims and $41,976 paid.

1979: 1 claims1990: 1 claims1993: 1 claims1994: 3 claims1995: 2 claims1997: 2 claims1998: 2 claims2003: 1 claims2004: 1 claims2008: 2 claims2010: 1 claims2011: 2 claims2013: 1 claims2014: 1 claims2015: 3 claims2017: 2 claims2019: 4 claims2021: 1 claims2026: 1 claims19801990200020102020

Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.

In their words

14 NOAA storm reports from Franklin County describe what happened, in the words of the forecasters who covered it. Read the Tennessee flood stories →

Federal disasters

15 federal disaster declarations since 1973, 2 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter StormJan 22, 2026
Severe Storms, Straight-line Winds, Tornadoes, And FloodingApr 2, 2025
Severe Storms, Tornadoes, Straight-line Winds, And Associated FloodingApr 25, 2011
Severe Storms, Tornadoes, And FloodingFeb 28, 2011
Hurricane Katrina EvacuationAug 29, 2005
Severe Storms, Tornadoes And High WindsJan 17, 1999
Severe Winter StormDec 23, 1998
Severe Winter Ice Storm,flash FloodingFeb 9, 1994

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

58 since 1996: 52 flash floods and 4 river or area floods.

EventDateDamage
Flash FloodAug 13, 2025—
Flash FloodMar 31, 2021—
Flash FloodSep 19, 2021—
Flash FloodMar 24, 2020—
Flash FloodDec 25, 2015—
Flash FloodApr 28, 2014—
Flash FloodAug 18, 2014—
Flash FloodJan 30, 2013—

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flash Flood · Aug 13, 2025. Isolated flash flooding in southern middle Tennessee.

Flash Flood · Mar 31, 2021. Two thunderstorm complexes moved through southern middle Tennessee during the early and mid morning hours of the 31st. Rainfall of 1.5 to 4.25 inches were reported during this time, resulting in flash flooding of a few roads.

Flash Flood · Sep 19, 2021. Showers and thunderstorms repeatedly moved across Northern Alabama and Southern Middle TN on the 19th and 20th. Numerous roads were closed in Lincoln County, with widespread rainfall amounts of 3-6 across much of the area. Portions of NW Madison received 6-8 over a few hours, leading to flash flooding.

Flash Flood · Mar 24, 2020. Multiple supercell clusters developed in northern Mississippi and western Tennessee during the late afternoon hours, which moved east across southern middle Tennessee during the mid evening hours. One of these storms produced an EF-1 tornado in Franklin County. Several reports of wind damage were received. Also, several reports of flash flooding were received in Franklin County following the thunderstorms and i…

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Franklin County

If a building in Franklin County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.

Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.