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Natural hazards · LaSalle

LaSalle, IL natural hazards

Most of the natural-hazard damage FEMA expects in LaSalle comes from cold waves, and overall the risk is low for a U.S. community. Flood insurance has paid 4 claims here since 1995. 5 federal disasters brought FEMA money into town.

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

How exposed is LaSalle?

22
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in LaSalle to be higher than in 22% of U.S. communities, mostly from cold waves and inland flooding.

Cold waves45%Inland flooding34%Tornadoes11%Everything else11%
By hazard

What LaSalle faces

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

Cold waves

45% of expected damage
Well below average · higher than 19% of U.S. places
Recorded about 5 times a year in the area

Inland flooding

34% of expected damage
Below average · higher than 43% of U.S. places
Recorded about 2 times a year in the area

Tornadoes

11% of expected damage
Above average · higher than 64% of U.S. places

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong 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 LaSalle flood?

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

4paid claims since 1995
$77Kpaid to owners
0homes flooded more than once
19952026
of homes in flood zones
are insured
of all homes
are insured
No community discount. LaSalle isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: La Salle County.
Disasters that hit LaSalle

5 federal disasters brought FEMA money here

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

Brought FEMA money into LaSalleDeclared for La Salle County only
2008

Severe Storms and Flooding

$80K to the City of LaSalle for repairs
2007

Severe Storms and Flooding

7 households applied for aid $13K aid approved
2006

Snow

$27K to the City of LaSalle for repairs
2000

Illinois Winter Snow Storms

$16K to the City of LaSalle for repairs
1999

Il-Winter Storm 1/1/99

$19K to the City of LaSalle for repairs
La Salle County has had 18 natural disasters declared since 1953, most often floods and winter storms.
Around LaSalle

LaSalle and the towns around it

Peru: Very low, mostly inland floodingNorth Utica: Low, mostly inland floodingPeru: Low, mostly inland floodingLaSalle: Low, mostly inland floodingDimmick: Very low, mostly inland floodingUtica: Low, mostly inland floodingDalzell: Low, mostly inland floodingEden: Low, mostly inland floodingSpring Valley: Low, mostly inland floodingHall: Low, mostly inland floodingDeer Park: Low, mostly inland floodingOglesby: Low, mostly inland floodingTroy Grove: Very low, mostly inland floodingWaltham: Very low, mostly inland floodingOttawa: High, mostly inland floodingLaSalle: Low, mostly cold waves LaSallePeruNorth UticaPeruLaSalleDimmickUtica
Very lowLowModerateHighVery high
North Uticamostly inland floodingLow
Uticamostly inland floodingLow
LaSallemostly inland floodingLow
Perumostly inland floodingLow
LaSallemostly cold wavesLow
Perumostly inland floodingVery low
Dimmickmostly 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. LaSalle covers 1 census tract, combined by population.
Money that reached townFlood claims are matched to LaSalle’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the City of LaSalle. 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 LaSalle total about $935K 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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