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Natural hazards · Marble Rock

Marble Rock, IA natural hazards

Most of the natural-hazard damage FEMA expects in Marble Rock comes from inland flooding, and overall the risk is high for a U.S. community. 3 federal disasters brought FEMA money into town.

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

How exposed is Marble Rock?

77
High
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Marble Rock to be higher than in 77% of U.S. communities, mostly from inland flooding and drought.

Inland flooding44%Drought26%Tornadoes12%Hail8%Cold waves7%Everything else4%
By hazard

What Marble Rock faces

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

Inland flooding

44% of expected damage
Well above average · higher than 88% of U.S. places
Recorded about 2 times a year in the area

Drought

26% of expected damage
Recorded about 24 times a year in the area

Tornadoes

12% of expected damage
Well above average · among the top 1% of U.S. places
Recorded about once every 6 years in the area

Hail

8% of expected damage
Well above average · higher than 85% of U.S. places
Recorded about 5 times a year in the area

Cold waves

7% of expected damage
Above average · higher than 70% of U.S. places
Recorded about 10 times a year in the area

Lower here

HurricanesIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Marble Rock flood?

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

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

What’s been done with FEMA grants

2flood-prone properties bought out and cleared
Disasters that hit Marble Rock

3 federal disasters brought FEMA money here

Disasters the President declared that paid out in Marble Rock itself: aid to households, or repair grants to the City of Marble Rock.

Brought FEMA money into Marble RockDeclared for Floyd County only
2008

Severe Storms, Tornadoes, and Flooding

14 households applied for aid $87K aid approved $10K to the City of Marble Rock for repairs
2007

Severe Winter Storms

$4K to the City of Marble Rock for repairs
2004

Severe Storms, Tornadoes, and Flooding

1 household applied for aid $5K aid approved
Floyd County has had 17 natural disasters declared since 1953, most often severe storms and floods.
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. Marble Rock 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 Marble Rock’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Marble Rock. 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/18 · 2025-01-01
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