FEMA flood zones · Tennessee

Madison County, Tennessee Flood Zone Map

173 flood insurance claims·$3.4M paid·1 federal flood & hurricane disasters

15% of Madison 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 Madison 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 Madison County floods

Flash flooding from severe weather events dominates the flood risk profile in Madison County, Tennessee, accounting for 67 of the last 30 years of recorded flood events, alongside 16 general floods resulting in 2 deaths and 1 tropical storm event. Recent activity includes a multi-hazard storm event in April 2025 that brought record flooding, as well as an active storm pattern driven by high precipitable water values and training storms in May 2024.

National Flood Insurance Program records indicate that flood risks extend beyond high-risk areas. Properties located in Zone A have accounted for 99 claims with an average payout of $26,123 and an average recorded water depth of 5 inches. Meanwhile, properties in Zone X have recorded 49 claims averaging $21,367 with an average water depth of 4 inches, and Zone X_UNSHADED properties have seen 10 claims averaging $29,637 with an average water depth of 4 inches. An additional 15 claims with unknown zones averaged $5,445 with an average water depth of 1 inch.

Homeowners, real estate agents, and journalists should pay the closest attention to properties situated in Zone A, while recognizing that structures in Zone X and unshaded areas also face verified flood risks and claim histories.

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

Where the flood claims came from

9% of Madison County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

109 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 4 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 2010, with 52 claims and $1.6M paid, the year of Severe Storms, Flooding, Straight-line Winds, and Tornadoes.

1979: 9 claims1980: 6 claims1982: 1 claims1983: 2 claims1984: 1 claims1987: 11 claims1988: 5 claims1989: 1 claims1990: 6 claims1991: 1 claims1992: 4 claims1997: 18 claims1999: 2 claims2001: 9 claims2002: 6 claims2007: 2 claims2008: 1 claims2009: 1 claims2010: 52 claims2011: 7 claims2012: 1 claims2013: 2 claims2014: 8 claims2016: 1 claims2017: 1 claims2018: 2 claims2019: 3 claims2021: 1 claims2022: 4 claims2023: 1 claims2025: 4 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

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

Federal disasters

24 federal disaster declarations since 1975, 1 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, Straight-line Winds, And TornadoMar 1, 2023
Severe Storms, Tornadoes, And FloodingMar 25, 2021
Severe Storms, Straight-line Winds, And FloodingMay 3, 2020
Severe Storms, Tornadoes, Straight-line Winds, And FloodingJun 5, 2014
Severe Winter StormMar 2, 2014
Severe Storms, Tornadoes, Straight-line Winds, And Associated FloodingApr 25, 2011

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

Recorded flood events

84 since 1996: 67 flash floods and 16 river or area floods.

EventDateDamage
Flash FloodApr 3, 2025—
Flash FloodMay 24, 2024—
Flash FloodJul 8, 2023—
Flash FloodJul 8, 2023$10,000
Flash FloodAug 4, 2023—
Flash FloodFeb 28, 2021$50,000
Flash FloodMar 27, 2021$75,000
FloodMar 1, 2021$50,000

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

From the storm reports

Flash Flood · Apr 3, 2025. A significant multi-hazard, multi-day event occurred across the Mid-South from April 2, 2025, to April 8, 2025, producing 35 tornadoes, record flooding, and numerous reports of damaging winds and large hail. A large upper-level trough covered the Western U.S. in early April. A significant piece of energy rotated around the base of the trough and ejected into the Southern Plains and the Middle-Upper Mississippi Va…

Flash Flood · May 24, 2024. An active storm pattern as several mid-level shortwaves crossed the region. An MCV lifted east northeast out of the Ozarks across southern Arkansas. The MCV fired up morning convection across the Mid-South with isolated storm coverage in the afternoon. A weak capped environment was broken and steep mid-level lapse rates, roughly 30 knots of shear, and plentiful instability allowed storms to flourish to the south.…

Flash Flood · Jul 8, 2023. A weak cold front extended from West Tennessee into central Arkansas during the afternoon hours on July 8, 2023. This front was moving slowly south. This feature combined with strong instability and deep moisture resulted in numerous showers and thunderstorms across the Mid-South. Isolated wind damage and flash flooding occurred.

Flash Flood · Aug 4, 2023. A stationary front was situated from southeast Missouri into northwest Tennessee during the early morning hours of August 4, 2023. An extremely unstable airmass was situated along and south of the front with surface-based convective available potential energy values of up to 7000 J/kg. Precipitable water values reached an anomalous 2.3 inches along the boundary. Thunderstorms developed across southeast Missouri an…

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 Madison County

If a building in Madison 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.