Natural hazards · Aux Sable

Aux Sable, IL natural hazards

Most of the natural-hazard damage FEMA expects in Aux Sable comes from cold waves, and overall the risk is moderate for a U.S. community. Flood insurance has paid 66 claims here since 1981. 2 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Aux Sable?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Aux Sable to be higher than in 40% of U.S. communities, mostly from cold waves and inland flooding.

Cold waves49%Inland flooding32%Tornadoes11%Everything else8%

By hazard

What Aux Sable faces

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

Cold waves

49% of expected damage

Well below average · higher than 18% of U.S. places

Recorded about 5 times a year in the area

Inland flooding

32% of expected damage

Above average · higher than 57% of U.S. places

Recorded about once a year in the area

Tornadoes

11% of expected damage

Well above average · higher than 84% of U.S. places

Recorded about once every 70 years in the area

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 Aux Sable flood?

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

66paid claims since 1981

$2.2Mpaid to owners

0homes flooded more than once

19812026

Biggest named events

Mid-spring storms: 19 claims, $963K
Hurricane Ike: 8 claims, $318K

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Grundy County.

Disasters that hit Aux Sable

2 federal disasters brought FEMA money here

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

Brought FEMA money into Aux SableDeclared for Grundy County only

2011

Severe Winter Storm and Snowstorm

$10K to the Township of Aux Sable for repairs

1999

Il-Winter Storm 1/1/99

$4K to the Township of Aux Sable for repairs

Grundy County has had 13 natural disasters declared since 1953, most often floods and winter storms.

Around Aux Sable

Aux Sable and the towns around it

Very lowLowModerateHighVery high

Goose Lakemostly inland floodingHigh

Saratogamostly cold wavesModerate

Channahonmostly inland floodingModerate

Sewardmostly inland floodingModerate

Minookamostly cold wavesModerate

Aux Sablemostly cold wavesModerate

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. Aux Sable covers 2 census tracts, combined by population.

Money that reached townFlood claims are matched to Aux Sable’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Township of Aux Sable. 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 Aux Sable total about $12.3M 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.