Natural hazards · Nampa

Nampa, ID natural hazards

Most of the natural-hazard damage FEMA expects in Nampa comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 2 claims here since 2017.

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

Expected damage

How exposed is Nampa?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Nampa to be higher than in 7% of U.S. communities, mostly from inland flooding.

Inland flooding64%Heat waves12%Earthquakes6%Everything else18%

By hazard

What Nampa faces

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

Inland flooding

64% of expected damage

Below average · higher than 26% of U.S. places

Recorded about once every 3 years in the area

Heat waves

12% of expected damage

Well above average · higher than 76% of U.S. places

Recorded about 5 times a year in the area

Earthquakes

6% of expected damage

Above average · higher than 51% of U.S. places

Lower here

TornadoesHailIce stormsWinter weatherCold 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 Nampa flood?

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

2paid claims since 2017

$10Kpaid to owners

0homes flooded more than once

20172026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Canyon County.

Disasters that hit Nampa

Federal disasters declared here

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

Brought FEMA money into NampaDeclared for Canyon County only

Canyon County has had 2 natural disasters declared since 1953, most often floods and hurricanes.

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. Nampa covers 22 census tracts, combined by population.

Money that reached townFlood claims are matched to Nampa’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Nampa. 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 Nampa total about $11.1M 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.