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Pottawattamie County, Iowa

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Low overall risk
6th of 99highest risk in Iowa
$50Mexpected losses a year
24federal declarations
1 in 77homes with flood insurance
Photo: U.S. Geological Survey, public domain

Pottawattamie County, Iowa has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 80% of US counties. It ranks 6th of 99 counties in Iowa. The costliest hazards here are inland flooding, tornadoes and hail. FEMA estimates about $50 million a year in expected losses, or roughly $530 per resident. Since 1965 it has been included in 24 federal disaster or emergency declarations for natural events (22 major disasters). The most recent was in June 2024 (severe storms, flooding, straight-line winds and tornadoes). About 1 in 77 homes here carry federal flood insurance (557 policies). Since 1978, federal flood insurance has paid about $11 million on 867 claims here, including $6.1 million for floods in 2011.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Pottawattamie County

$18.3 million a yearExpected losses. Damaging events about once a year.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.
$14.2 million a yearExpected losses. Damaging events about once a year.
  • Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
  • Turn on emergency alerts on your phone and keep a weather radio.

Hail

High
$3.9 million a yearExpected losses. Damaging events about 7 times a year.
  • Ask about the roof age and any impact-rated shingles.
  • Check your home policy for a separate wind and hail deductible.
HazardRatingScoreExpected loss a year
Inland floodingModerate74.6
$18M
TornadoHigh95.2
$14M
HailHigh95.7
$4M
Cold waveModerate78.9
$4M
Strong windHigh95.3
$4M
Heat waveModerate83.7
$2M
DroughtModerate89.5
$2M
LightningModerate72.6
$625K
Ice stormModerate81.1
$513K
Winter weatherModerate81.6
$261K
WildfireLow67.2
$161K
LandslideModerate91.3
$77K
EarthquakeVery Low26.9
$63K

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is relatively low and community resilience is relatively high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Pottawattamie County. 2020s bar runs to November 2026.

By type

Severe Storm12
Flood7
Tornado2
Snowstorm2
Hurricane1

Most recent

Jun 24, 2024Severe Storms, Flooding, Straight-Line Winds, and TornadoesMajor disaster
May 24, 2024Severe Storms, Tornadoes, and FloodingMajor disaster
May 14, 2024Severe Storms and TornadoesMajor disaster
Mar 23, 2019Severe Storms and FloodingMajor disaster
Jul 14, 2014Severe Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disaster
Jun 27, 2011FloodingMajor disaster
Mar 2, 2010Severe Winter StormMajor disaster
Feb 25, 2010Severe Winter Storms and SnowstormMajor disaster
May 27, 2008Severe Storms, Tornadoes, and FloodingMajor disaster
May 25, 2007Severe Storms, Flooding, and TornadoesMajor disaster
Show all 24
Mar 30, 2007SnowEmergency
Sep 10, 2005Hurricane Katrina EvacuationEmergency
May 25, 2004Severe Storms, Tornadoes, and FloodingMajor disaster
May 2, 2001Severe Storms, Tornadoes and FloodingMajor disaster
Jul 22, 1999Severe Storms and FloodingMajor disaster
Jul 2, 1998Severe Storms, Tornadoes and FloodingMajor disaster
Nov 20, 1997Severe SnowstormsMajor disaster
Aug 21, 1996Severe Storms, and FloodingMajor disaster
Jul 9, 1993Severe Storms & FloodingMajor disaster
Sep 6, 1990Severe Storms & FloodingMajor disaster
Jul 28, 1988Rain, Winds, & TornadoesMajor disaster
Jun 27, 1984Severe Storms, Tornadoes, Hail & FloodsMajor disaster
Sep 26, 1972Severe Storms & FloodingMajor disaster
Apr 22, 1965FloodingMajor disaster

Iowa also had 11 statewide declarations that did not name single counties.

Storm history since 1962

Tornado risk by county ›

The National Weather Service has logged 569 storm reports in Pottawattamie County since 1962, with 5 deaths and 106 injuries and about $120 million in reported damage. The strongest on record here was an F4 tornado on June 26, 1976.

57tornadoes
260hail reports, largest 4 inches
204damaging thunderstorm winds
43floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jun 26, 1976F4–6 / 0
Apr 26, 2024EF3Mc Clelland3 / 1
Jul 15, 1988F3–34 / 0
Apr 26, 2024EF3Carter Lake0 / 0
Apr 26, 2024EF3Dumfries0 / 0

Most damaging storms

DateTypeNearDamage
Jul 15, 1988Tornado–$25M
Jul 15, 1988Tornado–$25M
Jul 15, 1988Tornado–$25M
Jun 27, 2008Thunderstorm WindLake Manawa$13M
Sep 23, 2015Flash FloodChautauqua$6M
Aug 1, 2011FloodGrable$5M

Source: NOAA Storm Events Database, county-based reports through Jun 30, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Flood insurance in Pottawattamie County

Check your address flood zone ›
1.3%of homes have federal flood insurance (557 policies)
17.6%of homes in mapped high-risk flood zones are insured
$11 millionpaid on 867 flood claims since 1978
2011costliest year, with $6.1 million paid

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Pottawattamie County

$195,700median home value (Iowa $208,000, US $332,700)
1967median year homes were built (Iowa 1972, US 1980)
66%of homes built before 1980, before many modern wind, quake and flood building rules
3.5%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 40,083 housing units.

Compare in Iowa

All 99 ›
Largest countiesOverall riskTop hazard
Polk CountyModerateInland flooding
Linn CountyModerateInland flooding
Scott CountyModerateInland flooding
Johnson CountyModerateTornado
Black Hawk CountyLowInland flooding
Woodbury CountyModerateInland flooding
Dallas CountyLowInland flooding
Dubuque CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Douglas County, NEHigh27
Sarpy County, NEModerate23
Washington County, NEVery Low22
Harrison CountyVery Low22
Mills CountyVery Low18
Cass CountyLow17
Shelby CountyVery Low18
Montgomery CountyVery Low18

Cities in Pottawattamie County

Common questions about Pottawattamie County

What is the biggest natural hazard in Pottawattamie County?

Inland flooding has the highest expected yearly losses in Pottawattamie County, about $18.3 million a year in FEMA's estimate. Tornado is second at $14.2 million.

How many federal disasters has Pottawattamie County had?

Pottawattamie County has been included in 24 federal disaster or emergency declarations for natural events since 1965, including 22 major disasters. The most recent was Severe Storms, Flooding, Straight-Line Winds, and Tornadoes in June 2024.

Is Pottawattamie County a high-risk place to live?

Its overall rating is Relatively Low, 6th highest of 99 in Iowa. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Pottawattamie County?

Standard home insurance does not cover flooding. About 1 in 77 homes in Pottawattamie County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Pottawattamie County had?

NOAA records list 57 tornadoes in Pottawattamie County since 1950. The strongest was an F4 tornado on June 26, 1976. The weather service has also logged 260 hail reports and 43 floods here.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.