Natural hazards · Riverdale

Riverdale, IA natural hazards

Most of the natural-hazard damage FEMA expects in Riverdale comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 2 claims here since 1990. 2 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Riverdale?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Riverdale to be higher than in 33% of U.S. communities, mostly from inland flooding.

Inland flooding63%Tornadoes8%Hail7%Cold waves7%Strong wind6%Everything else9%

By hazard

What Riverdale faces

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

Inland flooding

63% of expected damage

Above average · higher than 54% of U.S. places

Recorded about 3 times a year in the area

Tornadoes

8% of expected damage

Above average · higher than 50% of U.S. places

Hail

7% of expected damage

Well above average · higher than 89% of U.S. places

Recorded about 4 times a year in the area

Cold waves

7% of expected damage

Above average · higher than 52% of U.S. places

Recorded about 7 times a year in the area

Strong wind

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

HurricanesIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesLightningDrought

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 Riverdale flood?

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

2paid claims since 1990

$6Kpaid to owners

0homes flooded more than once

19902026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Scott County.

Disasters that hit Riverdale

2 federal disasters brought FEMA money here

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

Brought FEMA money into RiverdaleDeclared for Scott County only

2024

Severe Storms, Flooding, Straight-Line Winds, and Tornadoes

1 household applied for aid

2020

Severe Storms

2 households applied for aid $14K to the City of Riverdale for repairs

Scott County has had 17 natural disasters declared since 1953, most often floods and severe storms.

Around Riverdale

Riverdale and the towns around it

Very lowLowModerateHighVery high

Bettendorfmostly inland floodingModerate

Molinemostly inland floodingLow

Riverdalemostly inland floodingLow

South Molinemostly inland floodingLow

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. Riverdale covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Riverdale’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Riverdale. 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 Riverdale total about $2.6M 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.