Natural hazards · Bonner-West Riverside

Bonner-West Riverside, MT natural hazards

Most of the natural-hazard damage FEMA expects in Bonner-West Riverside comes from avalanches, and overall the risk is high for a U.S. community.

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

Expected damage

How exposed is Bonner-West Riverside?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Bonner-West Riverside to be higher than in 76% of U.S. communities, mostly from avalanches.

Avalanches64%Wildfire12%Inland flooding11%Cold waves9%Everything else4%

By hazard

What Bonner-West Riverside faces

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

Avalanches

64% of expected damage

Well above average · among the top 1% of U.S. places

Recorded about once every 5 years in the area

Wildfire

12% of expected damage

Well above average · among the top 1% of U.S. places

Inland flooding

11% of expected damage

Above average · higher than 63% of U.S. places

Recorded about once a year in the area

Cold waves

9% of expected damage

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

Recorded about 4 times a year in the area

Lower here

TornadoesHailIce stormsWinter weatherHeat wavesEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingHurricanesDroughtTsunamisVolcanic 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 Bonner-West Riverside flood?

FEMA's records show no paid flood insurance claims in Bonner-West Riverside.

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Missoula County.

Disasters that hit Bonner-West Riverside

Federal disasters declared here

None of the disasters declared for Missoula County shows FEMA aid or repair money reaching Bonner-West Riverside itself in FEMA’s records.

Brought FEMA money into Bonner-West RiversideDeclared for Missoula County only

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

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. Bonner-West Riverside 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 Bonner-West Riverside’s own flood-insurance community; household aid to the registrant’s city; repair grants to Bonner-West Riverside. 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.