Natural hazards · Mandan

Mandan, ND natural hazards

Most of the natural-hazard damage FEMA expects in Mandan comes from inland flooding, and overall the risk is high for a U.S. community. Flood insurance has paid 109 claims here since 1978. 7 federal disasters brought FEMA money into town.

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

How exposed is Mandan?

72
High
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Mandan to be higher than in 72% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding32%Cold waves25%Hail18%Tornadoes11%Winter weather5%Everything else9%
By hazard

What Mandan faces

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

Inland flooding

32% of expected damage
Above average · higher than 68% of U.S. places
Recorded about once a year in the area

Cold waves

25% of expected damage
Above average · higher than 73% of U.S. places
Recorded about 14 times a year in the area

Hail

18% of expected damage
Well above average · among the top 1% of U.S. places
Recorded about 2 times a year in the area

Tornadoes

11% of expected damage
Above average · higher than 73% of U.S. places

Winter weather

5% of expected damage
Well above average · among the top 1% of U.S. places
Recorded about 19 times a year in the area

Lower here

Ice stormsHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingHurricanesDroughtAvalanchesTsunamisVolcanic 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 Mandan flood?

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

109paid claims since 1978
$626Kpaid to owners
1homes flooded more than once
19782026

Biggest named events

  • Late spring storms: 29 claims, $325K
  • Not a named storm: 2 claims, $6K
  • Midwest Flooding: 1 claim, $768

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

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

What’s been done with FEMA grants

2storm safe rooms built
Disasters that hit Mandan

7 federal disasters brought FEMA money here

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

Brought FEMA money into MandanDeclared for Morton County only
2025

Severe Storm, Tornadoes, and Straight-Line Winds

$56K to the City of Mandan for repairs
2019

Flooding

$11K to the City of Mandan for repairs
2011

Flooding

365 households applied for aid $936K aid approved $6.3M to the City of Mandan for repairs
2010

Flooding

$9K to the City of Mandan for repairs
2009

Severe Storms and Flooding

256 households applied for aid $158K aid approved $153K to the City of Mandan for repairs
2001

Severe Storms, Flooding, & Ground Saturation

$66K to the City of Mandan for repairs
1999

Severe Storms, Flooding, Snow, Ice, Ground Saturation, Lanslides, Mudslides, and Tor

$40K to the City of Mandan for repairs
Morton County has had 23 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. Mandan covers 1 census tract, combined by population.
Money that reached townFlood claims are matched to Mandan’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Mandan. 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 Mandan total about $3.2M 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.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01