Natural hazards · Cohasset

Cohasset, CA natural hazards

Most of the natural-hazard damage FEMA expects in Cohasset comes from inland flooding, and overall the risk is very high for a U.S. community. 2 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Cohasset?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Cohasset to be higher than in 89% of U.S. communities, mostly from inland flooding and wildfires.

Inland flooding54%Wildfire33%Earthquakes11%Everything else2%

By hazard

What Cohasset faces

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

Inland flooding

54% of expected damage

Well above average · higher than 91% of U.S. places

Recorded about once a year in the area

Wildfire

33% of expected damage

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

Earthquakes

11% of expected damage

Well above average · higher than 83% of U.S. places

Lower here

TornadoesHailWinter weatherHeat wavesLandslidesStrong windLightningDroughtAvalanchesVolcanic activity

Not a risk here

Coastal floodingHurricanesIce stormsCold wavesTsunamis

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 Cohasset flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Butte County.

Disasters that hit Cohasset

2 federal disasters brought FEMA money here

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

Brought FEMA money into CohassetDeclared for Butte County only

2023

Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides

16 households applied for aid $30K aid approved

2020

Wildfires

1 household applied for aid

Butte County has had 33 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. Cohasset 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 Cohasset’s own flood-insurance community; household aid to the registrant’s city; repair grants to Cohasset. 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.