Natural hazards · Grattan

Grattan, MI natural hazards

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

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

Expected damage

How exposed is Grattan?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Grattan to be higher than in 8% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding50%Tornadoes20%Strong wind14%Cold waves7%Heat waves5%Everything else3%

By hazard

What Grattan faces

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

Inland flooding

50% of expected damage

Well below average · higher than 18% of U.S. places

Recorded about once a year in the area

Tornadoes

20% of expected damage

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

Recorded about once every 73 years in the area

Strong wind

14% of expected damage

Well above average · higher than 86% of U.S. places

Recorded about 3 times a year in the area

Cold waves

7% of expected damage

Well below average · higher than 20% of U.S. places

Recorded about once a year in the area

Heat waves

5% of expected damage

Below average · higher than 30% of U.S. places

Recorded about 2 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherWildfireEarthquakesLandslidesLightning

Not a risk here

Coastal floodingDroughtAvalanchesTsunamisVolcanic 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 Grattan flood?

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

of all homes
are insured

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

Insurance rates: Kent County.

Disasters that hit Grattan

Federal disasters declared here

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

Brought FEMA money into GrattanDeclared for Kent County only

Kent County has had 11 natural disasters declared since 1953, most often floods and severe storms.

Around Grattan

Grattan and the towns around it

Very lowLowModerateHighVery high

Vergennesmostly inland floodingLow

Otiscomostly inland floodingVery low

Cannonmostly inland floodingVery low

Oakfieldmostly inland floodingVery low

Grattanmostly 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. Grattan covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Grattan’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Grattan. 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 Grattan total about $835K 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.