Natural hazards · Ixonia

Ixonia, WI natural hazards

Most of the natural-hazard damage FEMA expects in Ixonia comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 4 claims here since 1979. 3 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Ixonia?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Ixonia to be higher than in 21% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding49%Tornadoes18%Cold waves17%Hail7%Everything else9%

By hazard

What Ixonia faces

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

Inland flooding

49% of expected damage

Below average · higher than 32% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

18% of expected damage

Well above average · higher than 80% of U.S. places

Recorded about once every 37 years in the area

Cold waves

17% of expected damage

Below average · higher than 33% of U.S. places

Recorded about 5 times a year in the area

Hail

7% of expected damage

Well above average · higher than 87% of U.S. places

Recorded about 3 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 Ixonia flood?

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

4paid claims since 1979

$11Kpaid to owners

0homes flooded more than once

19792026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Jefferson County.

Disasters that hit Ixonia

3 federal disasters brought FEMA money here

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

Brought FEMA money into IxoniaDeclared for Jefferson County only

2008

Severe Storms, Tornadoes, and Flooding

4 households applied for aid $9K aid approved $14K to the Town of Ixonia for repairs

2008

Record Snow and Near Record Snow

$12K to the Town of Ixonia for repairs

2004

Severe Storms and Flooding

$14K to the Town of Ixonia for repairs

Jefferson County has had 12 natural disasters declared since 1953, most often severe storms and floods.

Around Ixonia

Ixonia and the towns around it

Very lowLowModerateHighVery high

Lac La Bellemostly inland floodingHigh

Oconomowocmostly inland floodingModerate

Concordmostly inland floodingLow

Lebanonmostly inland floodingLow

Watertownmostly inland floodingLow

Ixoniamostly 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. Ixonia covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Ixonia’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Town of Ixonia. 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 Ixonia total about $2.4M 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.