Natural hazards · Riverdale

Riverdale, UT natural hazards

Most of the natural-hazard damage FEMA expects in Riverdale comes from earthquakes, and overall the risk is moderate for a U.S. community. Flood insurance has paid 4 claims here since 1986.

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

Expected damage

How exposed is Riverdale?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Riverdale to be higher than in 59% of U.S. communities, mostly from earthquakes and inland flooding.

Earthquakes64%Inland flooding25%Everything else11%

By hazard

What Riverdale faces

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

Earthquakes

64% of expected damage

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

Inland flooding

25% of expected damage

Well below average · higher than 22% of U.S. places

Recorded about once every 2 years in the area

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamisVolcanic 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 Riverdale flood?

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

4paid claims since 1986

$8Kpaid to owners

0homes flooded more than once

19862026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Weber County.

Disasters that hit Riverdale

Federal disasters declared here

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

Brought FEMA money into RiverdaleDeclared for Weber County only

Weber County has had 9 natural disasters declared since 1953, most often floods and fires.

Around Riverdale

Riverdale and the towns around it

Very lowLowModerateHighVery high

Ogdenmostly earthquakesHigh

Riverdalemostly earthquakesModerate

Washington Terracemostly earthquakesModerate

South Ogdenmostly earthquakesModerate

Roymostly earthquakesModerate

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. Riverdale covers 2 census tracts, combined by population.

Money that reached townFlood claims are matched to Riverdale’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Riverdale. 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 Riverdale total about $3.6M 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.