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Natural hazards · Johnson Creek

Johnson Creek, WI natural hazards

Most of the natural-hazard damage FEMA expects in Johnson Creek comes from inland flooding, and overall the risk is low for a U.S. community. 5 federal disasters brought FEMA money into town.

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

How exposed is Johnson Creek?

38
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Johnson Creek to be higher than in 38% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding54%Tornadoes16%Cold waves15%Hail7%Everything else9%
By hazard

What Johnson Creek faces

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

Inland flooding

54% of expected damage
Above average · higher than 54% of U.S. places
Recorded about 2 times a year in the area

Tornadoes

16% of expected damage
Well above average · higher than 83% of U.S. places
Recorded about once every 29 years in the area

Cold waves

15% 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 89% of U.S. places
Recorded about 4 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 Johnson Creek flood?

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

of homes in flood zones
are insured
of all homes
are insured
No community discount. Johnson Creek 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.

What’s been done with FEMA grants

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

5 federal disasters brought FEMA money here

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

Brought FEMA money into Johnson CreekDeclared for Jefferson County only
2026

Severe Storms, Tornadoes, and Flooding

1 household applied for aid
2008

Severe Storms, Tornadoes, and Flooding

21 households applied for aid $114K aid approved
2008

Record Snow and Near Record Snow

$4K to the Village of Johnson Creek for repairs
2007

Severe Storms and Flooding

2 households applied for aid $3K aid approved
2004

Severe Storms and Flooding

1 household applied for aid $658 aid approved
Jefferson County has had 12 natural disasters declared since 1953, most often severe storms and floods.
Around Johnson Creek

Johnson Creek and the towns around it

Farmington: Low, mostly inland floodingAztalan: Low, mostly inland floodingMilford: Low, mostly inland floodingWatertown: Low, mostly inland floodingConcord: Low, mostly inland floodingJefferson: Low, mostly inland floodingJefferson: High, mostly inland floodingLake Mills: Very low, mostly inland floodingLake Mills: Low, mostly inland floodingJohnson Creek: Low, mostly inland flooding Johnson CreekFarmingtonAztalan
Very lowLowModerateHighVery high
Johnson Creekmostly inland floodingLow
Farmingtonmostly inland floodingLow
Aztalanmostly 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. Johnson Creek 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 Johnson Creek’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Village of Johnson Creek. 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.

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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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