Natural hazards · Somonauk

Somonauk, IL natural hazards

Most of the natural-hazard damage FEMA expects in Somonauk comes from inland flooding, and overall the risk is low for a U.S. community. 4 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Somonauk?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Somonauk to be higher than in 34% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding52%Cold waves21%Tornadoes16%Everything else11%

By hazard

What Somonauk faces

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

Inland flooding

52% of expected damage

Above average · higher than 55% of U.S. places

Recorded about once a year in the area

Cold waves

21% of expected damage

Well below average · higher than 22% of U.S. places

Recorded about 6 times a year in the area

Tornadoes

16% of expected damage

Well above average · higher than 81% of U.S. places

Recorded about once every 33 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 Somonauk flood?

FEMA's records show no paid flood insurance claims in Somonauk.

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: DeKalb County.

Disasters that hit Somonauk

4 federal disasters brought FEMA money here

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

Brought FEMA money into SomonaukDeclared for DeKalb County only

2013

Severe Storms, Straight-Line Winds, and Flooding

11 households applied for aid $21K aid approved

2008

Severe Storms and Flooding

1 household applied for aid

2007

Severe Storms and Flooding

5 households applied for aid $4K aid approved $846 to the Village of Somonauk for repairs

2006

Snow

$4K to the Village of Somonauk for repairs

DeKalb County has had 10 natural disasters declared since 1953, most often floods and winter storms.

Around Somonauk

Somonauk and the towns around it

Very lowLowModerateHighVery high

Somonaukmostly inland floodingLow

Sandwichmostly inland floodingLow

Lake Holidaymostly 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. Somonauk is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to Somonauk’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Village of Somonauk. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

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.