Natural hazards · Green Valley

Green Valley, CA natural hazards

Most of the natural-hazard damage FEMA expects in Green Valley comes from avalanches, 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 Green Valley?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Green Valley to be higher than in 100% of U.S. communities, mostly from avalanches and wildfires.

Avalanches41%Wildfire35%Inland flooding14%Earthquakes8%

By hazard

What Green Valley faces

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

Avalanches

41% of expected damage

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

Recorded about once every 8 years in the area

Wildfire

35% of expected damage

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

Inland flooding

14% of expected damage

Well above average · higher than 97% of U.S. places

Recorded about 4 times a year in the area

Earthquakes

8% of expected damage

Well above average · higher than 93% of U.S. places

Lower here

TornadoesHailWinter weatherCold wavesHeat wavesLandslidesStrong windLightning

Not a risk here

Coastal floodingHurricanesIce stormsDroughtTsunamisVolcanic 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 Green Valley flood?

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

of homes in flood zones
are insured

of all homes
are insured

No community discount. Green Valley 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 Green Valley

2 federal disasters brought FEMA money here

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

Brought FEMA money into Green ValleyDeclared for Los Angeles County only

2007

Wildfires, Flooding, Mud Flows, and Debris Flows

4 households applied for aid $775 aid approved

2004

Severe Storms, Flooding, Debris Flows, and Mudslides

1 household applied for aid $3K aid approved

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

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. Green Valley 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 Green Valley’s own flood-insurance community; household aid to the registrant’s city; repair grants to Green Valley. 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.