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Natural hazards · Duncan

Duncan, SC natural hazards

Most of the natural-hazard damage FEMA expects in Duncan comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 1 claim here since 2002. 4 federal disasters brought FEMA money into town.

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

How exposed is Duncan?

37
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Duncan to be higher than in 37% of U.S. communities, mostly from inland flooding.

Inland flooding63%Earthquakes9%Cold waves8%Tornadoes7%Everything else13%
By hazard

What Duncan faces

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

Inland flooding

63% of expected damage
Above average · higher than 53% of U.S. places
Recorded about 2 times a year in the area

Earthquakes

9% of expected damage
Above average · higher than 73% of U.S. places

Cold waves

8% of expected damage
Above average · higher than 64% of U.S. places
Recorded about once every 4 years in the area

Tornadoes

7% of expected damage
Above average · higher than 54% of U.S. places

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireLandslidesStrong windLightning

Not a risk here

Coastal floodingDroughtAvalanchesTsunamisVolcanic 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 Duncan flood?

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

1paid claims since 2002
$757paid to owners
0homes flooded more than once
20022026
of homes in flood zones
are insured
of all homes
are insured
No community discount. Duncan isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Spartanburg County.
Disasters that hit Duncan

4 federal disasters brought FEMA money here

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

Brought FEMA money into DuncanDeclared for Spartanburg County only
2024

Hurricane Helene

4,254 households applied for aid $2.8M aid approved $363K to the Town of Duncan for repairs
2015

Severe Storms and Flooding

8 households applied for aid $2K aid approved
2005

Severe Ice Storm

$27K to the Town of Duncan for repairs
2002

Severe Ice Storm

$5K to the Town of Duncan for repairs
Spartanburg County has had 19 natural disasters declared since 1953, most often hurricanes and severe storms.
Around Duncan

Duncan and the towns around it

Lyman: Low, mostly inland floodingStartex: Low, mostly inland floodingGreer: Low, mostly inland floodingWellford: Low, mostly inland floodingTaylors: High, mostly inland floodingDuncan: Low, mostly inland flooding DuncanLymanStartexGreerWellford
Very lowLowModerateHighVery high
Wellfordmostly inland floodingLow
Lymanmostly inland floodingLow
Duncanmostly inland floodingLow
Startexmostly inland floodingLow
Greermostly inland floodingLow
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. Duncan covers 2 census tracts, combined by population.
Money that reached townFlood claims are matched to Duncan’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Town of Duncan. 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 Duncan total about $3.2M 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
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