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Natural hazards · Delaware

Delaware, OK natural hazards

Most of the natural-hazard damage FEMA expects in Delaware comes from inland flooding, and overall the risk is very high for a U.S. community. 5 federal disasters brought FEMA money into town.

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

How exposed is Delaware?

85
Very high
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Delaware to be higher than in 85% of U.S. communities, mostly from inland flooding and strong winds.

Inland flooding31%Strong wind18%Cold waves14%Tornadoes14%Drought10%Ice storms6%Everything else8%
By hazard

What Delaware faces

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

Inland flooding

31% of expected damage
Well above average · higher than 91% of U.S. places
Recorded about 2 times a year in the area

Strong wind

18% of expected damage
Well above average · higher than 98% of U.S. places
Recorded about 7 times a year in the area

Cold waves

14% of expected damage
Below average · higher than 41% of U.S. places
Recorded about 2 times a year in the area

Tornadoes

14% of expected damage
Well above average · higher than 92% of U.S. places
Recorded about once every 6 years in the area

Drought

10% of expected damage
Recorded about 35 times a year in the area

Ice storms

6% of expected damage
Well above average · among the top 1% of U.S. places
Recorded about once a year in the area

Lower here

HurricanesHailWinter weatherHeat wavesWildfireEarthquakesLandslidesLightning

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 Delaware flood?

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

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

What’s been done with FEMA grants

1storm safe rooms built
Disasters that hit Delaware

5 federal disasters brought FEMA money here

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

Brought FEMA money into DelawareDeclared for Nowata County only
2024

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

2 households applied for aid $300 aid approved
2019

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

8 households applied for aid $13K aid approved
2012

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

$1K to the Town of Delaware for repairs
2007

Severe Winter Storms

$7K to the Town of Delaware for repairs
2007

Severe Storms, Flooding, and Tornadoes

23 households applied for aid $210K aid approved
Nowata County has had 25 natural disasters declared since 1953, most often severe storms and ice 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. Delaware 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 Delaware’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Delaware. 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.

The door’s open

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