Natural hazards · Walshtown

Walshtown, SD natural hazards

Most of the natural-hazard damage FEMA expects in Walshtown comes from inland flooding, and overall the risk is high for a U.S. community. Flood insurance has paid 13 claims here since 1997.

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

Expected damage

How exposed is Walshtown?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Walshtown to be higher than in 66% of U.S. communities, mostly from inland flooding and drought.

Inland flooding29%Drought28%Tornadoes15%Hail10%Cold waves9%Everything else10%

By hazard

What Walshtown faces

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

Inland flooding

29% of expected damage

Above average · higher than 71% of U.S. places

Recorded about 2 times a year in the area

Drought

28% of expected damage

Recorded about 25 times a year in the area

Tornadoes

15% of expected damage

Well above average · among the top 1% of U.S. places

Recorded about once every 3 years in the area

Hail

10% of expected damage

Well above average · higher than 85% of U.S. places

Recorded about 6 times a year in the area

Cold waves

9% of expected damage

Above average · higher than 63% of U.S. places

Recorded about 6 times a year in the area

Lower here

Ice stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightning

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 Walshtown flood?

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

13paid claims since 1997

$744Kpaid to owners

0homes flooded more than once

19972026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Yankton County.

Disasters that hit Walshtown

Federal disasters declared here

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

Brought FEMA money into WalshtownDeclared for Yankton County only

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

Around Walshtown

Walshtown and the towns around it

Very lowLowModerateHighVery high

Walshtownmostly inland floodingHigh

Mayfieldmostly inland floodingHigh

Marindahlmostly inland floodingHigh

Mission Hillmostly inland floodingHigh

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. Walshtown covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Walshtown’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Township of Walshtown. 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 Walshtown total about $5.9M 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.