Natural hazards · Norco

Norco, CA natural hazards

Most of the natural-hazard damage FEMA expects in Norco comes from inland flooding, and overall the risk is very high for a U.S. community. Flood insurance has paid 15 claims here since 1980. 4 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Norco?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Norco to be higher than in 93% of U.S. communities, mostly from inland flooding and earthquakes.

Inland flooding56%Earthquakes39%Everything else6%

By hazard

What Norco faces

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

Inland flooding

56% of expected damage

Well above average · higher than 95% of U.S. places

Recorded about 7 times a year in the area

Earthquakes

39% of expected damage

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

Lower here

HurricanesTornadoesHailWinter weatherHeat wavesWildfireLandslidesStrong windLightning

Not a risk here

Coastal floodingIce stormsCold wavesDroughtAvalanchesTsunamisVolcanic 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 Norco flood?

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

15paid claims since 1980

$220Kpaid to owners

2homes flooded more than once

19802026

Biggest named events

Pineapple Express - Southern: 2 claims, $6K

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Riverside County.

Disasters that hit Norco

4 federal disasters brought FEMA money here

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

Brought FEMA money into NorcoDeclared for Riverside County only

2023

Tropical Storm Hilary

$80K to the City of Norco for repairs

2010

Severe Winter Storms, Flooding, and Debris and Mud Flows

$89K to the City of Norco for repairs

2004

Severe Storms, Flooding, Debris Flows, and Mudslides

4 households applied for aid $2K aid approved $81K to the City of Norco for repairs

2003

Wildfires, Flooding, Mudflow and Debris Flow Directly Related T

3 households applied for aid $845 aid approved $19K to the City of Norco for repairs

Riverside County has had 61 natural disasters declared since 1953, most often fires and floods.

Around Norco

Norco and the towns around it

Very lowLowModerateHighVery high

Eastvalemostly inland floodingVery high

Jurupa Valleymostly inland floodingVery high

Riversidemostly inland floodingVery high

Norcomostly inland floodingVery high

Coronamostly inland floodingVery 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. Norco covers 8 census tracts, combined by population.

Money that reached townFlood claims are matched to Norco’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Norco. 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 Norco total about $25.6M 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.