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Natural hazards · Marietta

Marietta, OH natural hazards

Most of the natural-hazard damage FEMA expects in Marietta comes from inland flooding, and overall the risk is high for a U.S. community. Flood insurance has paid 604 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 Marietta?

68
High
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Marietta to be higher than in 68% of U.S. communities, mostly from inland flooding.

Inland flooding87%Everything else13%
By hazard

What Marietta faces

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

Inland flooding

87% of expected damage
Well above average · higher than 87% of U.S. places
Recorded about 4 times a year in the area

Lower here

HurricanesTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

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 Marietta flood?

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

604paid claims since 1978
$10.7Mpaid to owners
123homes flooded more than once
19782026

Biggest named events

  • Tropical Storm Ivan: 234 claims, $6.1M
  • Not a named storm: 44 claims, $147K

Homes that flooded again and again

Each house = 3 homes. ■ FEMA “severe repetitive loss” (13) ■ flooded 2+ times

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

7 federal disasters brought FEMA money here

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

Brought FEMA money into MariettaDeclared for Washington County only
2018

Severe Storms, Landslides, and Mudslides

$73K to the City of Marietta for repairs
2012

Severe Storms and Straight-Line Winds

$114K to the City of Marietta for repairs
2011

Severe Storms and Flooding

$44K to the City of Marietta for repairs
2004

Severe Winter Storms, Flooding, and Mudslides

68 households applied for aid $117K aid approved $176K to the City of Marietta for repairs
2004

Severe Storms and Flooding

751 households applied for aid $3.0M aid approved $605K to the City of Marietta for repairs
2004

Severe Storms, Flooding, Mudslides, and Landslides

39 households applied for aid $30K aid approved $15K to the City of Marietta for repairs
2003

Severe Winter Storm and Record/Near Record Snow

$19K to the City of Marietta for repairs
Washington County has had 17 natural disasters declared since 1953, most often severe storms and floods.
Around Marietta

Marietta and the towns around it

Marietta: Moderate, mostly inland floodingMuskingum: Moderate, mostly inland floodingFearing: High, mostly inland floodingWarren: Very low, mostly inland floodingWilliamstown: High, mostly inland floodingNewport: Very high, mostly inland floodingReno: Moderate, mostly inland floodingLawrence: Very high, mostly inland floodingAdams: Very high, mostly inland floodingSalem: Very high, mostly inland floodingWatertown: High, mostly inland floodingBarlow: Very low, mostly inland floodingBoaz: High, mostly inland floodingDunham: High, mostly inland floodingMarietta: High, mostly inland flooding MariettaMariettaMuskingumFearingWarrenWilliamstown
Very lowLowModerateHighVery high
Mariettamostly inland floodingHigh
Fearingmostly inland floodingHigh
Williamstownmostly inland floodingHigh
Muskingummostly inland floodingModerate
Mariettamostly inland floodingModerate
Warrenmostly inland floodingVery low
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. Marietta covers 5 census tracts, combined by population.
Money that reached townFlood claims are matched to Marietta’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Marietta. 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 Marietta total about $6.9M 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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