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Natural hazards · Warrenville

Warrenville, IL natural hazards

Most of the natural-hazard damage FEMA expects in Warrenville comes from inland flooding, and overall the risk is high for a U.S. community. Flood insurance has paid 34 claims here since 1979. 6 federal disasters brought FEMA money into town.

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

How exposed is Warrenville?

63
High
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Warrenville to be higher than in 63% of U.S. communities, mostly from inland flooding.

Inland flooding66%Cold waves14%Tornadoes14%Everything else7%
By hazard

What Warrenville faces

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

Inland flooding

66% of expected damage
Well above average · higher than 83% of U.S. places
Recorded about 3 times a year in the area

Cold waves

14% of expected damage
Well below average · higher than 21% of U.S. places
Recorded about 5 times a year in the area

Tornadoes

14% of expected damage
Well above average · higher than 75% of U.S. places

Lower here

HurricanesHailIce 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 Warrenville flood?

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

34paid claims since 1979
$576Kpaid to owners
3homes flooded more than once
19792026

Biggest named events

  • Hurricane Ike: 11 claims, $194K
  • Mid-spring storms: 4 claims, $53K

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. Warrenville isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: DuPage County.

What’s been done with FEMA grants

1flood-prone properties bought out and cleared
Disasters that hit Warrenville

6 federal disasters brought FEMA money here

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

Brought FEMA money into WarrenvilleDeclared for DuPage County only
2013

Severe Storms, Straight-Line Winds, and Flooding

46 households applied for aid $97K aid approved $25K to the City of Warrenville for repairs
2011

Severe Winter Storm and Snowstorm

$25K to the City of Warrenville for repairs
2010

Severe Storms and Flooding

11 households applied for aid $28K aid approved
2008

Severe Storms and Flooding

23 households applied for aid $106K aid approved $43K to the City of Warrenville for repairs
2000

Illinois Winter Snow Storms

$10K to the City of Warrenville for repairs
1999

Il-Winter Storm 1/1/99

$13K to the City of Warrenville for repairs
DuPage County has had 14 natural disasters declared since 1953, most often floods and winter storms.
Around Warrenville

Warrenville and the towns around it

Naperville: Moderate, mostly inland floodingAurora: Low, mostly inland floodingWinfield: Moderate, mostly inland floodingNaperville: Low, mostly inland floodingLisle: Low, mostly inland floodingBolingbrook: Low, mostly inland floodingPlainfield: Moderate, mostly inland floodingLisle: Low, mostly inland floodingMilton: Moderate, mostly inland floodingMontgomery: High, mostly inland floodingNorth Aurora: Very low, mostly inland floodingSugar Grove: Moderate, mostly inland floodingBatavia: Very low, mostly inland floodingOswego: Low, mostly inland floodingWheaton: Moderate, mostly inland floodingWayne: Low, mostly inland floodingWinfield: High, mostly inland floodingAurora: Low, mostly inland floodingWheatland: Moderate, mostly inland floodingWarrenville: High, mostly inland flooding WarrenvilleNapervilleAuroraWinfieldNaperville
Very lowLowModerateHighVery high
Warrenvillemostly inland floodingHigh
Winfieldmostly inland floodingModerate
Napervillemostly inland floodingModerate
Auroramostly inland floodingLow
Napervillemostly 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. Warrenville covers 3 census tracts, combined by population.
Money that reached townFlood claims are matched to Warrenville’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Warrenville. 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 Warrenville total about $5.8M 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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