Natural hazards · Au Sable

Au Sable, MI natural hazards

Most of the natural-hazard damage FEMA expects in Au Sable comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 12 claims here since 1997.

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

Expected damage

How exposed is Au Sable?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Au Sable to be higher than in 54% of U.S. communities, mostly from inland flooding.

Inland flooding74%Cold waves8%Tornadoes6%Everything else12%

By hazard

What Au Sable faces

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

Inland flooding

74% of expected damage

Well above average · higher than 77% of U.S. places

Recorded about once every 9 years in the area

Cold waves

8% of expected damage

Below average · higher than 44% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

6% of expected damage

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

Recorded about once every 72 years in the area

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 Au Sable flood?

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

12paid claims since 1997

$274Kpaid to owners

2homes flooded more than once

19972026

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

Insurance rates: Roscommon County.

Disasters that hit Au Sable

Federal disasters declared here

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

Brought FEMA money into Au SableDeclared for Roscommon County only

Roscommon County has had 5 natural disasters declared since 1953, most often floods and hurricanes.

Around Au Sable

Au Sable and the towns around it

Very lowLowModerateHighVery high

South Branchmostly inland floodingHigh

Au Sablemostly inland floodingModerate

Richfieldmostly inland floodingModerate

Higginsmostly inland floodingLow

Fostermostly inland floodingLow

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