Natural hazards · Grosse Ile

Grosse Ile, MI natural hazards

Most of the natural-hazard damage FEMA expects in Grosse Ile comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 33 claims here since 1978. 3 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Grosse Ile?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Grosse Ile to be higher than in 23% of U.S. communities, mostly from inland flooding.

Inland flooding70%Cold waves11%Tornadoes8%Heat waves6%Everything else5%

By hazard

What Grosse Ile faces

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

Inland flooding

70% of expected damage

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

Recorded about 3 times a year in the area

Cold waves

11% of expected damage

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

Recorded about 3 times a year in the area

Tornadoes

8% of expected damage

Above average · higher than 55% of U.S. places

Heat waves

6% of expected damage

Below average · higher than 36% of U.S. places

Recorded about 4 times a year in the area

Lower here

Coastal floodingHurricanesHailIce stormsWinter weatherWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

DroughtAvalanchesTsunamisVolcanic 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 Grosse Ile flood?

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

33paid claims since 1978

$383Kpaid to owners

4homes flooded more than once

19782026

Biggest named events

2026-04-Flooding: 1 claim, $38K

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

Insurance rates: Wayne County.

Disasters that hit Grosse Ile

3 federal disasters brought FEMA money here

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

Brought FEMA money into Grosse IleDeclared for Wayne County only

2023

Severe Storms, Tornadoes, and Flooding

18 households applied for aid $21K aid approved

2021

Severe Storms, Flooding, and Tornadoes

8 households applied for aid $2K aid approved

2014

Severe Storms and Flooding

6 households applied for aid $1K aid approved

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

Around Grosse Ile

Grosse Ile and the towns around it

Very lowLowModerateHighVery high

Wyandottemostly inland floodingLow

Grosse Ilemostly inland floodingLow

Trentonmostly inland floodingLow

Brownstownmostly inland floodingVery low

Gibraltarmostly inland floodingVery low

Riverviewmostly 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. Grosse Ile covers 3 census tracts, combined by population.

Money that reached townFlood claims are matched to Grosse Ile’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Grosse Ile. 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 Grosse Ile total about $3.3M 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.