Natural hazards · Casco

Casco, MI natural hazards

Most of the natural-hazard damage FEMA expects in Casco comes from inland flooding, and overall the risk is low for a U.S. community. 1 federal disaster brought FEMA money into town.

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

Expected damage

How exposed is Casco?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Casco to be higher than in 33% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding57%Cold waves19%Tornadoes14%Everything else10%

By hazard

What Casco faces

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

Inland flooding

57% of expected damage

Above average · higher than 52% of U.S. places

Recorded about once a year in the area

Cold waves

19% of expected damage

Above average · higher than 51% of U.S. places

Recorded about 3 times a year in the area

Tornadoes

14% of expected damage

Above average · higher than 69% of U.S. places

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightning

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 Casco flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: St. Clair County.

Disasters that hit Casco

1 federal disaster brought FEMA money here

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

Brought FEMA money into CascoDeclared for St. Clair County only

2004

Severe Storms, Tornadoes, and Flooding

1 household applied for aid $7K aid approved

St. Clair County has had 9 natural disasters declared since 1953, most often severe storms and floods.

Around Casco

Casco and the towns around it

Very lowLowModerateHighVery high

Chinamostly inland floodingModerate

Columbusmostly inland floodingLow

Cascomostly inland floodingLow

Iramostly inland floodingLow

Lenoxmostly inland floodingLow

Richmondmostly 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. Casco covers 2 census tracts, combined by population.

Money that reached townFlood claims are matched to Casco’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Casco. 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 Casco total about $1.3M 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.