Natural hazards · West Slope

West Slope, OR natural hazards

Most of the natural-hazard damage FEMA expects in West Slope comes from earthquakes, and overall the risk is moderate for a U.S. community. Flood insurance has paid 2 claims here since 2003.

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

Expected damage

How exposed is West Slope?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in West Slope to be higher than in 53% of U.S. communities, mostly from earthquakes and inland flooding.

Earthquakes71%Inland flooding20%Everything else9%

By hazard

What West Slope faces

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

Earthquakes

71% of expected damage

Well above average · higher than 90% of U.S. places

Inland flooding

20% of expected damage

Well below average · higher than 11% of U.S. places

Recorded about once a year in the area

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesStrong 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 West Slope flood?

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

2paid claims since 2003

$7Kpaid to owners

0homes flooded more than once

20032026

of homes in flood zones
are insured

of all homes
are insured

No community discount. West Slope 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.

Disasters that hit West Slope

Federal disasters declared here

None of the disasters declared for Washington County shows FEMA aid or repair money reaching West Slope itself in FEMA’s records.

Brought FEMA money into West SlopeDeclared for Washington County only

Washington County has had 13 natural disasters declared since 1953, most often floods and severe storms.

Around West Slope

West Slope and the towns around it

Very lowLowModerateHighVery high

Beavertonmostly earthquakesModerate

West Slopemostly earthquakesModerate

Raleigh Hillsmostly inland floodingLow

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. West Slope covers 2 census tracts, combined by population.

Money that reached townFlood claims are matched to West Slope’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to West Slope. 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 West Slope total about $4.7M 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.