Natural hazards · Lower Brule

Lower Brule, SD natural hazards

Most of the natural-hazard damage FEMA expects in Lower Brule comes from cold waves, and overall the risk is high for a U.S. community.

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

Expected damage

How exposed is Lower Brule?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Lower Brule to be higher than in 70% of U.S. communities, mostly from cold waves and inland flooding.

Cold waves62%Inland flooding15%Hail8%Tornadoes7%Everything else8%

By hazard

What Lower Brule faces

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

Cold waves

62% of expected damage

Above average · higher than 62% of U.S. places

Recorded about 6 times a year in the area

Inland flooding

15% of expected damage

Well above average · higher than 83% of U.S. places

Recorded about once a year in the area

Hail

8% of expected damage

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

Recorded about 4 times a year in the area

Tornadoes

7% of expected damage

Well above average · higher than 80% of U.S. places

Recorded about once every 9 years in the area

Lower here

Ice stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

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 Lower Brule flood?

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

of all homes
are insured

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

Insurance rates: Lyman County.

Disasters that hit Lower Brule

Federal disasters declared here

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

Brought FEMA money into Lower BruleDeclared for Lyman County only

Lyman County has had 14 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. Lower Brule 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 Lower Brule’s own flood-insurance community; household aid to the registrant’s city; repair grants to Lower Brule. 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.