FEMA flood zones · Virginia

King George County, Virginia Flood Zone Map

16 flood insurance claims·$91,377 paid·6 federal flood & hurricane disasters

9% of King George 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 King George County, Virginia. 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 King George County floods

Flooding driven by general floods and slow-moving summer thunderstorms dominates King George County. Over the last 30 years, NOAA recorded 18 flood events, 14 flash flood events, 4 tropical storms, 1 storm surge or tide event, and 1 coastal flood. Slow-moving thunderstorms caused flash flooding during events such as those on July 1, 2023, while upper-level low pressure systems brought repetitive rounds of storms dropping two to four inches of rain on May 5, 2025.

National Flood Insurance Program records indicate varied claim histories across different flood zones. Properties in Zone A recorded 7 claims with an average payout of $7,107 and an average recorded water depth of 1 inch. Zone X properties recorded 6 claims with an average payout of $9,182 and an average recorded water depth of 18 inches. Zone X Unshaded properties recorded 3 claims with an average payout of $21,256 and an average recorded water depth of 0 inches.

Homeowners and real estate agents representing properties in both designated special flood hazard areas like Zone A and moderate-to-low risk areas like Zone X should pay close attention to these risks, as claims and water depths occur across multiple zones.

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 13 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 6 claims and $2,764 paid.

1996: 3 claims2003: 2 claims2011: 4 claims2013: 1 claims2020: 6 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

11 NOAA storm reports from King George County describe what happened, in the words of the forecasters who covered it. Read the Virginia flood stories →

Federal disasters

27 federal disaster declarations since 1972, 6 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter StormJan 22, 2026
Severe Winter Storm And SnowstormJan 2, 2022
Hurricane FlorenceSep 13, 2018
Severe Winter Storm And SnowstormJan 22, 2016
Hurricane SandyOct 26, 2012
The Remnants Of Tropical Storm LeeSep 8, 2011
Hurricane IreneAug 26, 2011
EarthquakeAug 23, 2011

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

Recorded flood events

38 since 1996: 14 flash floods, 18 river or area floods and 2 coastal floods or surges.

EventDateDamage
FloodMay 5, 2025—
Flash FloodJul 1, 2023—
Coastal FloodOct 29, 2021—
FloodAug 20, 2021—
FloodJun 11, 2021—
FloodJun 10, 2021—
FloodOct 29, 2020—
FloodAug 6, 2020—

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

From the storm reports

Flood · May 5, 2025. An area of upper level low pressure brought repetitive rounds of slow moving thunderstorms to parts of Virginia. The heaviest rain fell across Loudoun County, Virginia and King George County, VA where to two to four inches of rain were observed.

Flash Flood · Jul 1, 2023. Showers and thunderstorms developed around a surface trough on the afternoon and evening. Slow moving thunderstorms led to some instances of flash flooding across central Virginia.

Coastal Flood · Oct 29, 2021. A strong pressure gradient between low pressure over the Ohio Valley and strong high pressure over Quebec, CA resulted in a strong southeast onshore flow that brought the highest water levels to the Tidal Potomac River since Tropical Storm Isabel in September 2003.

Flood · Aug 20, 2021. A weak boundary tapped into plenty of moisture and instability for showers and thunderstorms. Weak winds aloft caused slow moving storms, which led to instance of flooding and flash flooding.

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 King George County

If a building in King George 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.