Natural hazards · Mason

Mason, OH natural hazards

Most of the natural-hazard damage FEMA expects in Mason comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 7 claims here since 2001. 2 federal disasters brought FEMA money into town.

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

How exposed is Mason?

8
Very low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Mason to be higher than in 8% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding52%Tornadoes16%Cold waves12%Earthquakes6%Everything else14%
By hazard

What Mason faces

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

Inland flooding

52% of expected damage
Well below average · higher than 13% of U.S. places
Recorded about 3 times a year in the area

Tornadoes

16% of expected damage
Above average · higher than 71% of U.S. places

Cold waves

12% of expected damage
Above average · higher than 62% of U.S. places
Recorded about 3 times a year in the area

Earthquakes

6% of expected damage
Above average · higher than 52% of U.S. places

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Mason flood?

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

7paid claims since 2001
$60Kpaid to owners
1homes flooded more than once
20012026

Biggest named events

  • March storm: 1 claim, $5K

Homes that flooded again and again

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

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

What’s been done with FEMA grants

2storm safe rooms built
Disasters that hit Mason

2 federal disasters brought FEMA money here

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

Brought FEMA money into MasonDeclared for Warren County only
2008

Severe Wind Storm Associated With Tropical Depression Ike

$216K to the City of Mason for repairs
2004

Snow

$48K to the City of Mason for repairs
Warren County has had 11 natural disasters declared since 1953, most often severe storms and floods.
Around Mason

Mason and the towns around it

Deerfield: Very low, mostly inland floodingUnion: Low, mostly inland floodingKings Mills: Very low, mostly inland floodingTurtlecreek: Very low, mostly inland floodingLebanon: Low, mostly inland floodingLanden: Very low, mostly inland floodingHamilton: Low, mostly inland floodingLoveland Park: Low, mostly inland floodingSouth Lebanon: Moderate, mostly inland floodingWest Chester: Very low, mostly inland floodingSymmes: Low, mostly inland floodingHighpoint: Very low, mostly inland floodingSharonville: Very low, mostly inland floodingSalem: High, mostly inland floodingWashington: Very low, mostly inland floodingWayne: Low, mostly inland floodingLemon: Moderate, mostly inland floodingClear Creek: Low, mostly inland floodingFranklin: Moderate, mostly inland floodingMiddletown: Moderate, mostly inland floodingLoveland: Low, mostly inland floodingHarlan: Low, mostly inland floodingMason: Very low, mostly inland flooding MasonDeerfieldUnionKings MillsTurtlecreekLebanonLandenHamilton
Very lowLowModerateHighVery high
Unionmostly inland floodingLow
Hamiltonmostly inland floodingLow
Lebanonmostly inland floodingLow
Turtlecreekmostly inland floodingVery low
Deerfieldmostly inland floodingVery low
Kings Millsmostly inland floodingVery low
Landenmostly inland floodingVery low
Masonmostly 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. Mason covers 4 census tracts, combined by population.
Money that reached townFlood claims are matched to Mason’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Mason. 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 Mason total about $5.1M 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