Natural hazards · Canonsburg

Canonsburg, PA natural hazards

Most of the natural-hazard damage FEMA expects in Canonsburg comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 8 claims here since 1980. 2 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Canonsburg?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Canonsburg to be higher than in 37% of U.S. communities, mostly from inland flooding.

Inland flooding89%Everything else11%

By hazard

What Canonsburg faces

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

Inland flooding

89% of expected damage

Above average · higher than 67% of U.S. places

Recorded about 4 times a year in the area

Lower here

HurricanesTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightning

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 Canonsburg flood?

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

8paid claims since 1980

$114Kpaid to owners

1homes flooded more than once

19802026

Biggest named events

Tropical Storm Ivan: 3 claims, $93K

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. Canonsburg isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Washington County.

What’s been done with FEMA grants

5flood-prone properties bought out and cleared

Disasters that hit Canonsburg

2 federal disasters brought FEMA money here

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

Brought FEMA money into CanonsburgDeclared for Washington County only

2004

Tropical Depression Ivan

88 households applied for aid $256K aid approved

2004

Severe Storms and Flooding Associated With Tropical Depression Frances

13 households applied for aid $43K aid approved

Washington County has had 12 natural disasters declared since 1953, most often hurricanes and severe storms.

Around Canonsburg

Canonsburg and the towns around it

Very lowLowModerateHighVery high

Houstonmostly inland floodingHigh

Canonsburgmostly inland floodingLow

Chartiersmostly inland floodingLow

Cecilmostly inland floodingVery low

North Strabanemostly 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. Canonsburg covers 3 census tracts, combined by population.

Money that reached townFlood claims are matched to Canonsburg’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Borough of Canonsburg. 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 Canonsburg total about $2.0M 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.