Natural hazards · Millbrook Colony

Millbrook Colony, SD natural hazards

Most of the natural-hazard damage FEMA expects in Millbrook Colony 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 Millbrook Colony?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Millbrook Colony to be higher than in 55% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding31%Tornadoes17%Drought16%Cold waves14%Hail8%Strong wind7%Everything else7%

By hazard

What Millbrook Colony faces

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

Inland flooding

31% of expected damage

Above average · higher than 58% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

17% of expected damage

Well above average · higher than 98% of U.S. places

Recorded about once every 3 years in the area

Drought

16% of expected damage

Recorded about 11 times a year in the area

Cold waves

14% of expected damage

Above average · higher than 65% of U.S. places

Recorded about 8 times a year in the area

Hail

8% of expected damage

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

Recorded about 6 times a year in the area

Strong wind

7% of expected damage

Well above average · higher than 94% of U.S. places

Recorded about 4 times a year in the area

Lower here

Ice stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesLightning

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamisVolcanic 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 Millbrook Colony flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Hanson County.

Disasters that hit Millbrook Colony

Federal disasters declared here

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

Brought FEMA money into Millbrook ColonyDeclared for Hanson County only

Hanson County has had 23 natural disasters declared since 1953, most often floods and severe storms.

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. Millbrook Colony 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 Millbrook Colony’s own flood-insurance community; household aid to the registrant’s city; repair grants to Millbrook Colony. 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.