Natural hazards · Dorr

Dorr, IL natural hazards

Most of the natural-hazard damage FEMA expects in Dorr comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 11 claims here since 1979. 1 federal disaster brought FEMA money into town.

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

Expected damage

How exposed is Dorr?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Dorr to be higher than in 7% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding40%Tornadoes26%Cold waves24%Everything else10%

By hazard

What Dorr faces

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

Inland flooding

40% of expected damage

Well below average · higher than 13% of U.S. places

Recorded about once a year in the area

Tornadoes

26% of expected damage

Well above average · higher than 83% of U.S. places

Cold waves

24% of expected damage

Below average · higher than 31% of U.S. places

Recorded about 6 times a year 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 Dorr flood?

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

11paid claims since 1979

$148Kpaid to owners

0homes flooded more than once

19792026

Biggest named events

Mid-spring storms: 2 claims, $5K

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: McHenry County.

Disasters that hit Dorr

1 federal disaster brought FEMA money here

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

Brought FEMA money into DorrDeclared for McHenry County only

1999

Il-Winter Storm 1/1/99

$7K to the Township of Dorr for repairs

McHenry County has had 14 natural disasters declared since 1953, most often winter storms and floods.

Around Dorr

Dorr and the towns around it

Very lowLowModerateHighVery high

Nundamostly inland floodingHigh

Senecamostly inland floodingModerate

Graftonmostly inland floodingLow

Greenwoodmostly inland floodingLow

Crystal Lakemostly inland floodingLow

Woodstockmostly inland floodingVery low

Ridgefieldmostly inland floodingVery low

Dorrmostly 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. Dorr covers 5 census tracts, combined by population.

Money that reached townFlood claims are matched to Dorr’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Township of Dorr. 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 Dorr total about $6.7M 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.