Natural hazards · Cotati

Cotati, CA natural hazards

Most of the natural-hazard damage FEMA expects in Cotati comes from inland flooding, and overall the risk is very high for a U.S. community. Flood insurance has paid 2 claims here since 1993. 3 federal disasters brought FEMA money into town.

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

How exposed is Cotati?

94
Very high
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Cotati to be higher than in 94% of U.S. communities, mostly from inland flooding and earthquakes.

Inland flooding53%Earthquakes44%Everything else3%
By hazard

What Cotati faces

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

Inland flooding

53% of expected damage
Well above average · higher than 96% of U.S. places
Recorded about 3 times a year in the area

Earthquakes

44% of expected damage
Well above average · higher than 94% of U.S. places

Lower here

TornadoesHailWinter weatherHeat wavesWildfireLandslidesStrong windLightningDroughtVolcanic activity

Not a risk here

Coastal floodingHurricanesIce stormsCold wavesAvalanchesTsunamis
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 Cotati flood?

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

2paid claims since 1993
$2Kpaid to owners
0homes flooded more than once
19932026
of homes in flood zones
are insured
of all homes
are insured
No community discount. Cotati isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Sonoma County.
Disasters that hit Cotati

3 federal disasters brought FEMA money here

Disasters the President declared that paid out in Cotati itself: aid to households, or repair grants to the City of Cotati.

Brought FEMA money into CotatiDeclared for Sonoma County only
2020

Wildfires

18 households applied for aid
2017

Wildfires

59 households applied for aid $1K aid approved
2005

Severe Storms, Flooding, Mudslides, and Landslides

3 households applied for aid $17K to the City of Cotati for repairs
Sonoma County has had 29 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. Cotati covers 3 census tracts, combined by population.
Money that reached townFlood claims are matched to Cotati’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Cotati. 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 Cotati total about $14.4M 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.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01