Natural hazards · Green River

Green River, WY natural hazards

Most of the natural-hazard damage FEMA expects in Green River comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 1 claim here since 2017.

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

Expected damage

How exposed is Green River?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Green River to be higher than in 9% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding55%Cold waves27%Lightning6%Winter weather6%Everything else6%

By hazard

What Green River faces

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

Inland flooding

55% of expected damage

Below average · higher than 31% of U.S. places

Recorded about once every 3 years in the area

Cold waves

27% of expected damage

Well above average · higher than 75% of U.S. places

Recorded about once a year in the area

Lightning

6% of expected damage

Below average · higher than 39% of U.S. places

Winter weather

6% of expected damage

Well above average · higher than 89% of U.S. places

Recorded about 12 times a year in the area

Lower here

TornadoesHailIce stormsWildfireEarthquakesLandslidesStrong wind

Not a risk here

Coastal floodingHurricanesHeat wavesDroughtAvalanchesTsunamisVolcanic 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 Green River flood?

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

1paid claims since 2017

$7Kpaid to owners

0homes flooded more than once

20172026

of all homes
are insured

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

Insurance rates: Sweetwater County.

Disasters that hit Green River

Federal disasters declared here

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

Brought FEMA money into Green RiverDeclared for Sweetwater County only

Sweetwater County has had 2 natural disasters declared since 1953, most often severe storms and droughts.

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. Green River covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Green River’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Green River. 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 Green River total about $429K 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.