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Natural hazards · Logan

Logan, SD natural hazards

Most of the natural-hazard damage FEMA expects in Logan comes from inland flooding, and overall the risk is moderate for a U.S. community. 2 federal disasters brought FEMA money into town.

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

How exposed is Logan?

51
Moderate
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Logan to be higher than in 51% of U.S. communities, mostly from inland flooding and drought.

Inland flooding38%Drought25%Cold waves14%Tornadoes10%Hail7%Everything else7%
By hazard

What Logan faces

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

Inland flooding

38% of expected damage
Above average · higher than 62% of U.S. places
Recorded about 3 times a year in the area

Drought

25% of expected damage
Recorded about 6 times a year in the area

Cold waves

14% of expected damage
Above average · higher than 67% of U.S. places
Recorded about 10 times a year in the area

Tornadoes

10% of expected damage
Well above average · higher than 96% of U.S. places
Recorded about once every 3 years in the area

Hail

7% of expected damage
Well above average · higher than 80% of U.S. places
Recorded about 5 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 Logan flood?

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

of homes in flood zones
are insured
of all homes
are insured
No community discount. Logan isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Beadle County.
Disasters that hit Logan

2 federal disasters brought FEMA money here

Disasters the President declared that paid out in Logan itself: aid to households, or repair grants to the Township of Logan.

Brought FEMA money into LoganDeclared for Beadle County only
2011

Flooding

$8K to the Township of Logan for repairs
2010

Flooding

$4K to the Township of Logan for repairs
Beadle County has had 18 natural disasters declared since 1953, most often severe storms and floods.
Around Logan

Logan and the towns around it

Iroquois: Low, mostly cold wavesRichland: Moderate, mostly inland floodingBelle Prairie: Moderate, mostly inland floodingBanner: Moderate, mostly inland floodingIroquois: Low, mostly cold wavesPearl Creek: Moderate, mostly inland floodingCavour: Moderate, mostly inland floodingCavour: Moderate, mostly inland floodingCuster: High, mostly inland floodingAfton: Moderate, mostly inland floodingFoster: Moderate, mostly inland floodingLogan: Moderate, mostly inland flooding LoganIroquoisRichlandBelle PrairieBanner
Very lowLowModerateHighVery high
Loganmostly inland floodingModerate
Richlandmostly inland floodingModerate
Belle Prairiemostly inland floodingModerate
Bannermostly inland floodingModerate
Iroquoismostly cold wavesLow
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. Logan 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 Logan’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Logan. 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.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/15 · 2025-01-01
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