FEMA flood zones · Tennessee

Monroe County, Tennessee Flood Zone Map

17 flood insurance claims·$256,764 paid·2 federal flood & hurricane disasters

5% of Monroe 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 Monroe 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 Monroe County floods

Flash flooding and river flooding from severe thunderstorms and heavy rainfall dominate the flood profile in Monroe County, TN, with NOAA records detailing 21 flash flood events and 18 flood events over the last 30 years. Recent destructive weather patterns are documented in the narratives, including a closed low and trailing cold front that caused significant flooding across the region in August 2023, followed by severe thunderstorms that produced flash flooding on May 2, 2025.

National Flood Insurance Program records indicate that flood risks affect properties across different designated zones. Properties in Zone X account for 8 claims with an average payout of $31,431 and an average recorded water depth of 10 inches. Meanwhile, properties in Zone A account for 7 claims with an average payout of $7,097 and an average recorded water depth of 50 inches. Two additional claims were filed under an unknown zone with an average payout of $632 and an average recorded water depth of 0 inches.

Homeowners, real estate agents, and journalists should pay the closest attention to properties located in both designated high-risk riverine areas (Zone A) and moderate-to-low risk areas (Zone X), as both zones have recorded historical flood claims and significant water depths.

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

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 23 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 2020, with 4 claims and $50,197 paid, the year of Severe Storms, Tornadoes, Straight-line Winds, and Flooding.

1978: 1 claims1979: 1 claims1999: 1 claims2002: 1 claims2003: 3 claims2009: 1 claims2019: 2 claims2020: 4 claims2023: 1 claims2024: 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

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

Federal disasters

18 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, Straight-line Winds, And TornadoMar 1, 2023
Severe Storms, Tornadoes, Straight-line Winds, And FloodingApr 12, 2020
Severe Winter Storm And FloodingFeb 15, 2015
Severe Storms, Tornadoes, Straight-line Winds AndFeb 29, 2012
Severe Storms, Tornadoes, Straight-line Winds, And Associated FloodingApr 25, 2011
Hurricane Katrina EvacuationAug 29, 2005

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

Recorded flood events

39 since 1996: 21 flash floods and 18 river or area floods.

EventDateDamage
Flash FloodMay 2, 2025—
Flash FloodJul 30, 2024—
FloodAug 15, 2023—
Flash FloodAug 14, 2023$10.0M
Flash FloodAug 5, 2022—
FloodAug 31, 2021—
Flash FloodAug 14, 2021—
Flash FloodApr 12, 2020—

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

From the storm reports

Flash Flood · May 2, 2025. An area of thunderstorms moved into eastern Tennessee during the afternoon hours on May 2, 2025. Damaging wind reports were seen throughout the Cumberland plateau and Tennessee valley, but the strongest storms and greatest concentration of severe weather reports were mainly in the southern Tennessee valley. Flash flooding, damaging winds, and even some severe sized hail were seen there.

Flash Flood · Jul 30, 2024. An upper level shortwave coupled with strong wind fields brought multiple rounds of severe weather to East Tennessee, including two mesoscale convective systems. Flash flooding occurred in Knox county.

Flood · Aug 15, 2023. A highly anomalous weather pattern involving a closed low and a trailing cold front brought discrete thunderstorms and multicell clusters in multiple rounds to east Tennessee. Repeat events as well as training of cells resulted in flash flooding, some of it significant.

Flash Flood · Aug 14, 2023. A highly anomalous weather pattern involving a closed low and a trailing cold front brought discrete thunderstorms and multicell clusters in multiple rounds to east Tennessee. Repeat events as well as training of cells resulted in flash flooding, some of it significant.

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 Monroe County

If a building in Monroe 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.