Natural hazards · Spring Valley

Spring Valley, SD natural hazards

Most of the natural-hazard damage FEMA expects in Spring Valley 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 Spring Valley?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Spring Valley to be higher than in 46% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding35%Tornadoes27%Drought12%Cold waves11%Hail6%Everything else9%

By hazard

What Spring Valley faces

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

Inland flooding

35% of expected damage

Below average · higher than 40% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

27% of expected damage

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

Recorded about once every 4 years in the area

Drought

12% of expected damage

Recorded about 28 times a year in the area

Cold waves

11% of expected damage

Below average · higher than 33% of U.S. places

Recorded about 7 times a year in the area

Hail

6% of expected damage

Well above average · higher than 81% 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 Spring Valley flood?

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

of all homes
are insured

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

Insurance rates: Turner County.

Disasters that hit Spring Valley

Federal disasters declared here

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

Brought FEMA money into Spring ValleyDeclared for Turner County only

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

Around Spring Valley

Spring Valley and the towns around it

Very lowLowModerateHighVery high

Turkey Valleymostly inland floodingHigh

Spring Valleymostly inland floodingModerate

Norwaymostly inland floodingModerate

Swan Lakemostly inland floodingModerate

Salemmostly inland floodingModerate

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