Natural hazards · Charter Oak

Charter Oak, CA natural hazards

Most of the natural-hazard damage FEMA expects in Charter Oak comes from earthquakes, and overall the risk is very high for a U.S. community.

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

Expected damage

How exposed is Charter Oak?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Charter Oak to be higher than in 86% of U.S. communities, mostly from earthquakes and inland flooding.

Earthquakes58%Inland flooding41%Everything else2%

By hazard

What Charter Oak faces

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

Earthquakes

58% of expected damage

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

Inland flooding

41% of expected damage

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

Recorded about 4 times a year in the area

Lower here

TornadoesHailWinter weatherHeat wavesLandslidesStrong windLightning

Not a risk here

Coastal floodingHurricanesIce 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 Charter Oak flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Los Angeles County.

Disasters that hit Charter Oak

Federal disasters declared here

None of the disasters declared for Los Angeles County shows FEMA aid or repair money reaching Charter Oak itself in FEMA’s records.

Brought FEMA money into Charter OakDeclared for Los Angeles County only

Los Angeles County has had 74 natural disasters declared since 1953, most often fires and floods.

Around Charter Oak

Charter Oak and the towns around it

Very lowLowModerateHighVery high

Glendoramostly earthquakesVery high

Covinamostly earthquakesVery high

Charter Oakmostly earthquakesVery high

San Dimasmostly earthquakesVery high

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. Charter Oak covers 2 census tracts, combined by population.

Money that reached townFlood claims are matched to Charter Oak’s own flood-insurance community; household aid to the registrant’s city; repair grants to Charter Oak. 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 Charter Oak total about $4.9M 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.