FEMA flood zones · Tennessee

Carroll County, Tennessee Flood Zone Map

19 flood insurance claims·$520,821 paid·1 federal flood & hurricane disasters

11% of Carroll 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 Carroll 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 Carroll County floods

Flash flooding from heavy rain events dominates the flood history of Carroll County, Tennessee, accounting for 36 out of 43 recorded storm events over the last 30 years alongside 1 related death, while general floods, tropical storms, and tropical depressions occur less frequently. Recent severe impacts include an April 2025 event driven by a slow-moving front, strong low-level moisture transport, and training storms north of I-40 that brought heavy rainfall and severe weather to the region.

National Flood Insurance Program claims data indicates that properties located within high-risk Zone A should pay the closest attention to flood risk, having accumulated 13 claims with an average payout of $41,796 and an average recorded water depth of 3 inches. Properties in Zone X have experienced 4 claims with an average payout of $9,409 and an average recorded water depth of 3 inches, while properties with an unknown zone status have recorded 2 claims averaging $225 with an average water depth of 1 inch.

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 2 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 9 claims and $388,448 paid, the year of Severe Storms, Flooding, Straight-line Winds, and Tornadoes.

1978: 1 claims1979: 1 claims2000: 1 claims2010: 9 claims2013: 2 claims2014: 3 claims2020: 1 claims2024: 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

17 NOAA storm reports from Carroll 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 1971, 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, Straight-line Winds, And FloodingMay 3, 2020
Severe Storms, Tornadoes, Straight-line Winds, And FloodingMar 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

43 since 1996: 36 flash floods and 5 river or area floods.

EventDateDamage
Flash FloodFeb 15, 2025—
Flash FloodJun 13, 2025$20,000
Flash FloodApr 5, 2025$15,000
FloodFeb 11, 2019—
Flash FloodFeb 6, 2019—
FloodFeb 21, 2018—
Flash FloodApr 19, 2017$5,000
Flash FloodJun 1, 2017$5,000

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

From the storm reports

Flash Flood · Feb 15, 2025. An upper-level trough crossed the Four Corners region and dipped into northern Mexico on February 14, 2025. In response, deep southwesterly flow set up over the Lower Mississippi Valley and advected Gulf moisture poleward. Showers and thunderstorms blossomed across the region during the early morning hours on February 15, 2025. Meanwhile, a warm front quickly accelerated northward during the morning of February 15…

Flash Flood · Jun 13, 2025. Showers and thunderstorms continued throughout the day as an upper trough lifted slowly northeast across the region. A very moist airmass with PWATs near the 99th percentile, supported heavy rainfall resulting in isolated flash flooding.

Flash Flood · Apr 5, 2025. The front eventually sagged south back into the Mid-South during the early morning hours of April 5th. Strong low-level moisture transport into the frontal zone resulted in heavy rain and training storms across northern sections of the Mid-South, mainly north of I-40. A bow echo developed along and just south of the slowly advancing front. This feature crossed the entire forecast area producing 13 tornadoes, inclu…

Flood · Feb 11, 2019. A slow moving system in the Lower Mississippi valley caused areal and river flooding over portions of west Tennessee on February 11th and 12th.

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 Carroll County

If a building in Carroll 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.