Natural hazards · Johnson

Johnson, IL natural hazards

Most of the natural-hazard damage FEMA expects in Johnson comes from inland flooding, and overall the risk is moderate for a U.S. community.

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

Expected damage

How exposed is Johnson?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Johnson to be higher than in 56% of U.S. communities, mostly from inland flooding and drought.

Inland flooding38%Drought22%Earthquakes17%Cold waves7%Tornadoes6%Everything else10%

By hazard

What Johnson faces

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

Inland flooding

38% of expected damage

Above average · higher than 61% of U.S. places

Recorded about once a year in the area

Drought

22% of expected damage

Recorded about 2 times a year in the area

Earthquakes

17% of expected damage

Well above average · higher than 82% of U.S. places

Cold waves

7% of expected damage

Above average · higher than 50% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

6% of expected damage

Above average · higher than 74% of U.S. places

Recorded about once every 9 years in the area

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireLandslidesStrong windLightning

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 flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Clark County.

Disasters that hit Johnson

Federal disasters declared here

None of the disasters declared for Clark County shows FEMA aid or repair money reaching Johnson itself in FEMA’s records.

Brought FEMA money into JohnsonDeclared for Clark County only

Clark County has had 8 natural disasters declared since 1953, most often floods and severe storms.

Around Johnson

Johnson and the towns around it

Very lowLowModerateHighVery high

Crooked Creekmostly inland floodingHigh

Johnsonmostly inland floodingModerate

Orangemostly inland floodingModerate

Caseymostly inland floodingModerate

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 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’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Johnson. 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.