Natural hazards · Nicasio

Nicasio, CA natural hazards

Most of the natural-hazard damage FEMA expects in Nicasio comes from inland flooding, 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 Nicasio?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Nicasio to be higher than in 97% of U.S. communities, mostly from inland flooding and earthquakes.

Inland flooding41%Earthquakes34%Wildfire16%Landslides7%Everything else3%

By hazard

What Nicasio faces

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

Inland flooding

41% of expected damage

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

Recorded about 2 times a year in the area

Earthquakes

34% of expected damage

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

Wildfire

16% of expected damage

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

Landslides

7% of expected damage

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

Lower here

Coastal floodingTornadoesHailWinter weatherHeat wavesStrong windLightningDroughtTsunamisVolcanic activity

Not a risk here

HurricanesIce stormsCold wavesAvalanches

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 Nicasio flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Marin County.

Disasters that hit Nicasio

Federal disasters declared here

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

Brought FEMA money into NicasioDeclared for Marin County only

Marin County has had 22 natural disasters declared since 1953, most often floods 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. Nicasio 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 Nicasio’s own flood-insurance community; household aid to the registrant’s city; repair grants to Nicasio. 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.