Natural hazards · Riverton

Riverton, IA natural hazards

Most of the natural-hazard damage FEMA expects in Riverton comes from inland flooding, and overall the risk is moderate for a U.S. community. 6 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Riverton?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Riverton to be higher than in 44% of U.S. communities, mostly from inland flooding and drought.

Inland flooding38%Drought20%Tornadoes15%Hail9%Cold waves7%Heat waves5%Everything else6%

By hazard

What Riverton 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

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

Recorded about 2 times a year in the area

Drought

20% of expected damage

Recorded about 11 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 5 years in the area

Hail

9% of expected damage

Well above average · higher than 91% of U.S. places

Recorded about 7 times a year in the area

Cold waves

7% of expected damage

Above average · higher than 69% of U.S. places

Recorded about 4 times a year in the area

Heat waves

5% of expected damage

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

Recorded about 8 times a year in the area

Lower here

Ice stormsWinter weatherWildfireEarthquakesLandslidesStrong 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 Riverton flood?

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

of all homes
are insured

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

Insurance rates: Fremont County.

Disasters that hit Riverton

6 federal disasters brought FEMA money here

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

Brought FEMA money into RivertonDeclared for Fremont County only

2019

Severe Storms and Flooding

3 households applied for aid $750 aid approved

2011

Flooding

4 households applied for aid

2009

Severe Winter Storms and Snowstorm

$3K to the City of Riverton for repairs

2008

Severe Storms, Tornadoes, and Flooding

12 households applied for aid $15K aid approved $61K to the City of Riverton for repairs

2007

Severe Winter Storm

$6K to the City of Riverton for repairs

2007

Severe Storms, Flooding, and Tornadoes

6 households applied for aid $5K aid approved $70K to the City of Riverton for repairs

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

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. Riverton 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 Riverton’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Riverton. 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.