Natural hazards · Crystal Lake

Crystal Lake, IL natural hazards

Most of the natural-hazard damage FEMA expects in Crystal Lake comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 22 claims here since 1982. 6 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Crystal Lake?

Low

vs. U.S. communities

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

Inland flooding49%Tornadoes22%Cold waves21%Everything else8%

By hazard

What Crystal Lake 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 37% of U.S. places

Recorded about once a year in the area

Tornadoes

22% of expected damage

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

Cold waves

21% 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 Crystal Lake flood?

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

22paid claims since 1982

$185Kpaid to owners

2homes flooded more than once

19822026

Biggest named events

Mid-spring storms: 1 claim, $5K

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

🏷️ 20% off flood insurance. Crystal Lake is in FEMA’s Community Rating System (class 6) for its flood-proofing work.

Insurance rates: McHenry County.

Disasters that hit Crystal Lake

6 federal disasters brought FEMA money here

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

Brought FEMA money into Crystal LakeDeclared for McHenry County only

2013

Severe Storms, Straight-Line Winds, and Flooding

24 households applied for aid $26K aid approved $13K to the City of Crystal Lake for repairs

2011

Severe Winter Storm and Snowstorm

$143K to the City of Crystal Lake for repairs

2008

Record Snow and Near Record Snow

$82K to the City of Crystal Lake for repairs

2006

Snow

$49K to the City of Crystal Lake for repairs

2000

Illinois Winter Snow Storms

$32K to the City of Crystal Lake for repairs

1999

Il-Winter Storm 1/1/99

$37K to the City of Crystal Lake for repairs

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

Around Crystal Lake

Crystal Lake and the towns around it

Very lowLowModerateHighVery high

Prairie Grovemostly inland floodingHigh

Lake in the Hillsmostly inland floodingModerate

Lakewoodmostly inland floodingLow

Carymostly inland floodingLow

Graftonmostly inland floodingLow

Crystal Lakemostly inland floodingLow

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. Crystal Lake covers 8 census tracts, combined by population.

Money that reached townFlood claims are matched to Crystal Lake’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Crystal Lake. 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 Crystal Lake total about $13.7M 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.