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Natural hazards · Manassas

Manassas, VA natural hazards

Most of the natural-hazard damage FEMA expects in Manassas comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 22 claims here since 1978. 7 federal disasters brought FEMA money into town.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations
Expected damage

How exposed is Manassas?

24
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Manassas to be higher than in 24% of U.S. communities, mostly from inland flooding.

Inland flooding57%Heat waves8%Strong wind8%Tornadoes7%Earthquakes6%Hurricanes6%Everything else8%
By hazard

What Manassas faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Inland flooding

57% of expected damage
Below average · higher than 38% of U.S. places
Recorded about once every 2 years in the area

Heat waves

8% of expected damage
Below average · higher than 49% of U.S. places
Recorded about 6 times a year in the area

Strong wind

8% of expected damage
Well above average · higher than 86% of U.S. places
Recorded about 7 times a year in the area

Tornadoes

7% of expected damage
Above average · higher than 51% of U.S. places

Earthquakes

6% of expected damage
Above average · higher than 57% of U.S. places

Hurricanes

6% of expected damage
Above average · higher than 69% of U.S. places
Recorded about once every 12 years in the area

Lower here

HailIce stormsWinter weatherCold wavesWildfireLandslidesLightning

Not a risk here

Coastal floodingDroughtAvalanchesTsunamisVolcanic activity
Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.
Flood insurance claims

Does Manassas flood?

Every paid claim on a federal flood insurance policy in Manassas, from FEMA’s records.

22paid claims since 1978
$238Kpaid to owners
4homes flooded more than once
19782026

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

of all homes
are insured
No community discount. Manassas isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: the county.

What’s been done with FEMA grants

1flood-prone properties bought out and cleared
Disasters that hit Manassas

7 federal disasters brought FEMA money here

Disasters the President declared that paid out in Manassas itself: aid to households, or repair grants to the City of Manassas.

Brought FEMA money into ManassasDeclared for the county only
2016

Severe Winter Storm and Snowstorm

$222K to the City of Manassas for repairs
2012

Hurricane Sandy

$27K to the City of Manassas for repairs
2010

Severe Winter Storms and Snowstorms

$175K to the City of Manassas for repairs
2009

Severe Winter Storm and Snowstorm

$146K to the City of Manassas for repairs
2003

Hurricane Isabel

42 households applied for aid $22K aid approved $174K to the City of Manassas for repairs
2003

Severe Winter Storm, Record/Near Record Snowfall, Heavy Rain,floodind, and Mudslide

$78K to the City of Manassas for repairs
2000

Severe Winter Storms

$63K to the City of Manassas for repairs
the county has had 12 natural disasters declared since 1953, most often winter storms and hurricanes.
Around Manassas

Manassas and the towns around it

Buckhall: Low, mostly inland floodingLoch Lomond: Very high, mostly inland floodingInnovation: Very low, mostly inland floodingManassas Park: Moderate, mostly inland floodingYorkshire: Moderate, mostly inland floodingSudley: Moderate, mostly inland floodingBull Run: Moderate, mostly inland floodingLinton Hall: Low, mostly inland floodingManassas: Low, mostly inland flooding ManassasBuckhallLoch LomondInnovationManassas Park
Very lowLowModerateHighVery high
Loch Lomondmostly inland floodingVery high
Manassas Parkmostly inland floodingModerate
Buckhallmostly inland floodingLow
Manassasmostly inland floodingLow
Innovationmostly inland floodingVery low
About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.
Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Manassas covers 7 census tracts, combined by population.
Money that reached townFlood claims are matched to Manassas’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Manassas. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Manassas total about $7.5M a year, counting buildings, people and crops.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01
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