Natural hazards · Delafield

Delafield, WI natural hazards

Most of the natural-hazard damage FEMA expects in Delafield comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 4 claims here since 1993. 6 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Delafield?

Low

vs. U.S. communities

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

Inland flooding57%Tornadoes17%Cold waves16%Hail5%Everything else6%

By hazard

What Delafield faces

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

Inland flooding

57% of expected damage

Below average · higher than 37% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

17% of expected damage

Above average · higher than 73% of U.S. places

Cold waves

16% of expected damage

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

Recorded about 5 times a year in the area

Hail

5% of expected damage

Well above average · higher than 84% 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 Delafield flood?

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

4paid claims since 1993

$30Kpaid to owners

1homes flooded more than once

19932026

Biggest named events

Storm: 1 claim, $7K

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. Delafield isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Waukesha County.

Disasters that hit Delafield

6 federal disasters brought FEMA money here

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

Brought FEMA money into DelafieldDeclared for Waukesha County only

2026

Severe Storms, Tornadoes, and Flooding

3 households applied for aid $7K aid approved

2025

Severe Storms, Straight-Line Winds, Flooding, and Mudslides

7 households applied for aid $77K aid approved

2008

Severe Storms, Tornadoes, and Flooding

46 households applied for aid $49K aid approved $42K to the City of Delafield for repairs

2008

Record Snow and Near Record Snow

$12K to the City of Delafield for repairs

2004

Severe Storms and Flooding

1 household applied for aid

2000

Snow

$7K to the City of Delafield for repairs

Waukesha County has had 17 natural disasters declared since 1953, most often floods and severe storms.

Around Delafield

Delafield and the towns around it

Very lowLowModerateHighVery high

Oconomowocmostly inland floodingModerate

Summitmostly inland floodingLow

Mertonmostly inland floodingLow

Oconomowoc Lakemostly inland floodingLow

Nashotahmostly inland floodingLow

Chenequamostly inland floodingLow

Delafieldmostly inland floodingLow

Hartlandmostly inland floodingLow

Delafieldmostly inland floodingVery low

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. Delafield covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Delafield’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Delafield. 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 Delafield total about $2.3M 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.