Natural hazards · LeRoy

LeRoy, IL natural hazards

Most of the natural-hazard damage FEMA expects in LeRoy comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 2 claims here since 2000. 1 federal disaster brought FEMA money into town.

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

How exposed is LeRoy?

23
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in LeRoy to be higher than in 23% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding50%Tornadoes18%Cold waves13%Hail6%Everything else13%
By hazard

What LeRoy faces

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

Inland flooding

50% of expected damage
Below average · higher than 33% of U.S. places
Recorded about once a year in the area

Tornadoes

18% of expected damage
Well above average · higher than 83% of U.S. places
Recorded about once every 12 years in the area

Cold waves

13% of expected damage
Below average · higher than 30% of U.S. places
Recorded about 6 times a year in the area

Hail

6% of expected damage
Well above average · higher than 86% of U.S. places
Recorded about 5 times a year in the area

Lower here

HurricanesIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 LeRoy flood?

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

2paid claims since 2000
$7Kpaid to owners
0homes flooded more than once
20002026
of homes in flood zones
are insured
of all homes
are insured
No community discount. LeRoy isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Boone County.
Disasters that hit LeRoy

1 federal disaster brought FEMA money here

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

Brought FEMA money into LeRoyDeclared for Boone County only
2008

Record Snow and Near Record Snow

$3K to the Township of LeRoy for repairs
Boone County has had 9 natural disasters declared since 1953, most often winter storms and floods.
Around LeRoy

LeRoy and the towns around it

Chemung: Very low, mostly inland floodingPoplar Grove: Low, mostly inland floodingManchester: Low, mostly inland floodingBoone: Low, mostly inland floodingDunham: Very low, mostly inland floodingAlden: Very low, mostly inland floodingWalworth: Low, mostly inland floodingCaledonia: Low, mostly inland floodingRoscoe: Moderate, mostly inland floodingClinton: Low, mostly inland floodingLeRoy: Low, mostly inland flooding LeRoyChemungPoplar GroveManchesterBoone
Very lowLowModerateHighVery high
Poplar Grovemostly inland floodingLow
LeRoymostly inland floodingLow
Manchestermostly inland floodingLow
Boonemostly inland floodingLow
Chemungmostly inland floodingVery low
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. LeRoy covers 1 census tract, combined by population.
Money that reached townFlood claims are matched to LeRoy’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Township of LeRoy. 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 LeRoy total about $1.7M 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/15 · 2025-01-01