Natural hazards · Riverton

Riverton, WY natural hazards

Most of the natural-hazard damage FEMA expects in Riverton comes from earthquakes, and overall the risk is very low for a U.S. community.

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

Expected damage

How exposed is Riverton?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Riverton to be higher than in 18% of U.S. communities, mostly from earthquakes and inland flooding.

Earthquakes40%Inland flooding35%Cold waves13%Lightning6%Everything else6%

By hazard

What Riverton faces

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

Earthquakes

40% of expected damage

Well above average · higher than 83% of U.S. places

Inland flooding

35% of expected damage

Well below average · higher than 13% of U.S. places

Recorded about 2 times a year in the area

Cold waves

13% of expected damage

Above average · higher than 74% of U.S. places

Recorded about once a year in the area

Lightning

6% of expected damage

Above average · higher than 60% of U.S. places

Lower here

TornadoesHailIce stormsWinter weatherHeat wavesLandslidesStrong wind

Not a risk here

Coastal floodingHurricanesWildfireDroughtAvalanchesTsunamisVolcanic 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 Riverton flood?

FEMA's records show no paid flood insurance claims in Riverton.

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Fremont County.

Disasters that hit Riverton

Federal disasters declared here

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

Brought FEMA money into RivertonDeclared for Fremont County only

Fremont County has had 4 natural disasters declared since 1953, most often floods and fires.

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. Riverton covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Riverton’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Riverton. 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 Riverton total about $795K 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.