Natural hazards · Grantsville

Grantsville, MO natural hazards

Most of the natural-hazard damage FEMA expects in Grantsville comes from inland flooding, and overall the risk is moderate for a U.S. community.

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

Expected damage

How exposed is Grantsville?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Grantsville to be higher than in 46% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding43%Tornadoes23%Cold waves10%Drought7%Heat waves6%Everything else11%

By hazard

What Grantsville faces

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

Inland flooding

43% of expected damage

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

Recorded about once every 2 years in the area

Tornadoes

23% of expected damage

Well above average · higher than 92% of U.S. places

Recorded about once every 10 years in the area

Cold waves

10% of expected damage

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

Recorded about 4 times a year in the area

Drought

7% of expected damage

Recorded about 11 times a year in the area

Heat waves

6% of expected damage

Well above average · higher than 98% of U.S. places

Recorded about 9 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Grantsville flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Linn County.

Disasters that hit Grantsville

Federal disasters declared here

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

Brought FEMA money into GrantsvilleDeclared for Linn County only

Linn County has had 19 natural disasters declared since 1953, most often severe storms and ice storms.

Around Grantsville

Grantsville and the towns around it

Very lowLowModerateHighVery high

Locust Creekmostly inland floodingHigh

Bentonmostly inland floodingHigh

Grantsvillemostly inland floodingModerate

Bakermostly inland floodingModerate

Enterprisemostly inland floodingModerate

North Salemmostly inland floodingModerate

Yellow Creekmostly inland floodingModerate

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. Grantsville is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to Grantsville’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Grantsville. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

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.