Natural hazards · Iona

Iona, ID natural hazards

Most of the natural-hazard damage FEMA expects in Iona 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 Iona?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Iona to be higher than in 43% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding45%Cold waves27%Earthquakes15%Everything else14%

By hazard

What Iona faces

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

Inland flooding

45% of expected damage

Above average · higher than 58% of U.S. places

Recorded about once every 2 years in the area

Cold waves

27% of expected damage

Well above average · higher than 87% of U.S. places

Recorded about 2 times a year in the area

Earthquakes

15% of expected damage

Well above average · higher than 81% of U.S. places

Lower here

TornadoesHailIce stormsWinter weatherHeat wavesWildfireLandslidesStrong windLightningDroughtVolcanic activity

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamis

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 Iona flood?

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

of all homes
are insured

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

Insurance rates: Bonneville County.

Disasters that hit Iona

Federal disasters declared here

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

Brought FEMA money into IonaDeclared for Bonneville County only

Bonneville County has had 5 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. Iona 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 Iona’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Iona. 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.