Natural hazards · Ko Olina

Ko Olina, HI natural hazards

Most of the natural-hazard damage FEMA expects in Ko Olina 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 Ko Olina?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Ko Olina to be higher than in 87% of U.S. communities, mostly from inland flooding and tsunamis.

Inland flooding41%Tsunamis32%Wildfire17%Earthquakes10%Everything else1%

By hazard

What Ko Olina 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 77% of U.S. places

Recorded about 6 times a year in the area

Tsunamis

32% of expected damage

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

Wildfire

17% of expected damage

Well above average · higher than 98% of U.S. places

Earthquakes

10% of expected damage

Well above average · higher than 81% of U.S. places

Lower here

Coastal floodingHurricanesTornadoesHailLandslidesStrong windLightning

Not a risk here

Ice stormsWinter weatherCold wavesHeat wavesDroughtAvalanchesVolcanic 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 Ko Olina flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Honolulu County.

Disasters that hit Ko Olina

Federal disasters declared here

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

Brought FEMA money into Ko OlinaDeclared for Honolulu County only

Honolulu County has had 22 natural disasters declared since 1953, most often floods and hurricanes.

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. Ko Olina covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Ko Olina’s own flood-insurance community; household aid to the registrant’s city; repair grants to Ko Olina. 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 Ko Olina total about $1.6M 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.