Natural hazards · Bostonia

Bostonia, CA natural hazards

Most of the natural-hazard damage FEMA expects in Bostonia comes from inland flooding, and overall the risk is high for a U.S. community. Flood insurance has paid 4 claims here since 1981.

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

Expected damage

How exposed is Bostonia?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Bostonia to be higher than in 74% of U.S. communities, mostly from inland flooding and earthquakes.

Inland flooding67%Earthquakes28%Everything else5%

By hazard

What Bostonia faces

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

Inland flooding

67% of expected damage

Well above average · higher than 84% of U.S. places

Recorded about 8 times a year in the area

Earthquakes

28% of expected damage

Well above average · higher than 85% of U.S. places

Lower here

HurricanesTornadoesHailWinter weatherHeat wavesLandslidesStrong windLightning

Not a risk here

Coastal floodingIce stormsCold wavesWildfireDroughtAvalanchesTsunamisVolcanic 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 Bostonia flood?

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

4paid claims since 1981

$25Kpaid to owners

0homes flooded more than once

19812026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: San Diego County.

Disasters that hit Bostonia

Federal disasters declared here

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

Brought FEMA money into BostoniaDeclared for San Diego County only

San Diego County has had 44 natural disasters declared since 1953, most often fires and floods.

Around Bostonia

Bostonia and the towns around it

Very lowLowModerateHighVery high

Santeemostly inland floodingVery high

Winter Gardensmostly inland floodingHigh

Bostoniamostly inland floodingHigh

El Cajonmostly inland floodingHigh

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. Bostonia covers 2 census tracts, combined by population.

Money that reached townFlood claims are matched to Bostonia’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to Bostonia. 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 Bostonia total about $2.7M 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.