FEMA flood zones · Virginia

Middlesex County, Virginia Flood Zone Map

234 flood insurance claims·$3.0M paid·8 federal flood & hurricane disasters

12% of Middlesex 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 Middlesex 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 Middlesex County floods

Coastal flooding from prolonged onshore winds and tidal anomalies dominates the flood hazard profile, supported by 11 coastal flood events alongside occurrences of general flooding, tropical storms, flash floods, and hurricanes over the last 30 years. Recent events illustrate this pattern, including October 2025, when a coastal low and a strong high-pressure system produced prolonged northeast winds that caused widespread moderate to major coastal flooding across eastern Virginia. Similarly, in August 2025, Hurricane Erin passing offshore combined with northern high pressure to generate strong onshore winds and coastal flooding.

National Flood Insurance Program records indicate that properties situated in high-risk coastal and riverine areas bear the heaviest impact. Zone A accounts for the highest volume with 169 claims averaging $17,794 and an average recorded water depth of 5 inches. Zone X follows with 28 claims averaging $18,198 and an average water depth of 3 inches, while Zone V records 26 claims averaging $19,000 with an average water depth of 3 inches. Homeowners and real estate professionals managing properties in Zones A, X, and V should pay the closest attention to flood risk and mitigation requirements.

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

Where the flood claims came from

Less than 1% of Middlesex County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

196 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 5 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 2003, with 100 claims and $1.5M paid, the year of Hurricane Isabel.

1978: 2 claims1979: 1 claims1984: 3 claims1985: 5 claims1992: 2 claims1995: 1 claims1996: 5 claims1997: 1 claims1998: 8 claims1999: 11 claims2000: 2 claims2001: 1 claims2003: 100 claims2004: 1 claims2006: 65 claims2009: 11 claims2010: 1 claims2011: 7 claims2015: 1 claims2016: 3 claims2018: 1 claims2020: 1 claims2022: 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

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

Federal disasters

24 federal disaster declarations since 1972, 8 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter StormJan 22, 2026
Severe Winter StormsFeb 11, 2021
Tropical Storm MichaelOct 9, 2018
Hurricane FlorenceSep 13, 2018
Hurricane SandyOct 26, 2012
Hurricane IreneAug 26, 2011
Tropical Depression Ernesto, Severe Storms And FloodingAug 29, 2006
Hurricane Katrina EvacuationAug 29, 2005

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

Recorded flood events

29 since 1996: 3 flash floods, 7 river or area floods and 11 coastal floods or surges.

EventDateDamage
Coastal FloodOct 28, 2025—
Coastal FloodAug 21, 2025—
Coastal FloodOct 12, 2025—
Coastal FloodOct 2, 2025—
Coastal FloodNov 15, 2024—
Tropical StormSep 23, 2023—
Tropical StormJul 8, 2021$15,000
Tropical StormAug 4, 2020$100,000

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

From the storm reports

Coastal Flood · Oct 28, 2025. Low pressure off the Mid-Atlantic coast combined with high pressure in Canada, resulting in a lengthy period of northeasterly onshore flow. Increasing tidal anomalies resulted in moderate to locally major tidal flooding over an extended period.

Coastal Flood · Aug 21, 2025. Hurricane Erin passed well offshore and combined with high pressure to the north, resulting in a period of strong onshore winds and coastal flooding across eastern Virginia and the Virginia Eastern Shore.

Coastal Flood · Oct 12, 2025. A coastal low formed off of the Southeast coast on October 11 and slowly tracked north into October 13 before moving offshore. Meanwhile, a strong 1035mb area of high pressure lingered over the Gulf of Saint Lawrence. This resulted in a prolonged period of strong northeast to north winds across the Chesapeake Bay and coastal waters, which allowed for widespread moderate to major coastal flooding across eastern Vir…

Coastal Flood · Oct 2, 2025. Hurricanes Humberto and Imelda were located well offshore of the Eastern Seaboard on October 1, with high pressure over the Great Lakes and southern Canada. The combination of elevated winds and long-period swell led to coastal flooding. A few locations along the Virginia tidal rivers reached moderate flood stage from later October 1 into early October 3.

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 coastal flood zoneDiagram: land rising away from the shore. The 1%-annual-chance flood surface reaches inland; where storm waves ride on top of it the zone is V or VE, behind that AE, then a band of shaded X, then X on higher ground.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXX shadedAEVE
  1. VE / V Storm waves of 3 feet or more ride on top of the flood. Strictest building rules; homes go up on pilings.
  2. 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.
  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 Middlesex County

If a building in Middlesex 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.