Natural hazards · Delta

Delta, UT natural hazards

Most of the natural-hazard damage FEMA expects in Delta comes from earthquakes, and overall the risk is low for a U.S. community. Flood insurance has paid 12 claims here since 1983.

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

Expected damage

How exposed is Delta?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Delta to be higher than in 28% of U.S. communities, mostly from earthquakes and inland flooding.

Earthquakes36%Inland flooding27%Wildfire14%Winter weather8%Everything else14%

By hazard

What Delta faces

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

Earthquakes

36% of expected damage

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

Inland flooding

27% of expected damage

Well below average · higher than 8% of U.S. places

Recorded about once every 3 years in the area

Wildfire

14% of expected damage

Well above average · higher than 96% of U.S. places

Winter weather

8% of expected damage

Well above average · higher than 94% of U.S. places

Recorded about 19 times a year in the area

Lower here

TornadoesHailIce stormsCold wavesHeat wavesLandslidesStrong windLightningDroughtAvalanchesVolcanic activity

Not a risk here

Coastal floodingHurricanesTsunamis

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 Delta flood?

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

12paid claims since 1983

$205Kpaid to owners

0homes flooded more than once

19832026

of all homes
are insured

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

Insurance rates: Millard County.

Disasters that hit Delta

Federal disasters declared here

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

Brought FEMA money into DeltaDeclared for Millard County only

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

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. Delta 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 Delta’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Delta. 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.