Natural hazards · Wilsonville

Wilsonville, OR natural hazards

Most of the natural-hazard damage FEMA expects in Wilsonville comes from earthquakes, and overall the risk is moderate for a U.S. community. Flood insurance has paid 3 claims here since 1996. 2 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Wilsonville?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Wilsonville to be higher than in 50% of U.S. communities, mostly from earthquakes and inland flooding.

Earthquakes58%Inland flooding24%Cold waves10%Heat waves5%Everything else3%

By hazard

What Wilsonville faces

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

Earthquakes

58% of expected damage

Well above average · higher than 88% of U.S. places

Inland flooding

24% of expected damage

Well below average · higher than 21% of U.S. places

Recorded about once a year in the area

Cold waves

10% of expected damage

Below average · higher than 26% of U.S. places

Recorded about once every 4 years in the area

Heat waves

5% of expected damage

Well above average · higher than 80% of U.S. places

Recorded about 7 times a year in the area

Lower here

TornadoesHailIce stormsWinter weatherWildfireLandslidesStrong windLightningVolcanic activity

Not a risk here

Coastal floodingHurricanesDroughtAvalanchesTsunamis

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 Wilsonville flood?

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

3paid claims since 1996

$74Kpaid to owners

0homes flooded more than once

19962026

of homes in flood zones
are insured

of all homes
are insured

No community discount. Wilsonville isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Clackamas County.

Disasters that hit Wilsonville

2 federal disasters brought FEMA money here

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

Brought FEMA money into WilsonvilleDeclared for Clackamas County only

2021

Severe Winter Storm

$366K to the City of Wilsonville for repairs

2020

Wildfires and Straight-Line Winds

42 households applied for aid $6K aid approved

Clackamas County has had 18 natural disasters declared since 1953, most often severe storms and floods.

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. Wilsonville covers 3 census tracts, combined by population.

Money that reached townFlood claims are matched to Wilsonville’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Wilsonville. 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 Wilsonville total about $4.6M 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.