Natural hazards · Dennis

Dennis, OK natural hazards

Most of the natural-hazard damage FEMA expects in Dennis comes from inland flooding, and overall the risk is very high for a U.S. community.

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

Expected damage

How exposed is Dennis?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Dennis to be higher than in 91% of U.S. communities, mostly from inland flooding.

Inland flooding63%Tornadoes11%Heat waves7%Cold waves6%Everything else14%

By hazard

What Dennis faces

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

Inland flooding

63% of expected damage

Well above average · higher than 97% of U.S. places

Recorded about once a year in the area

Tornadoes

11% of expected damage

Above average · higher than 72% of U.S. places

Recorded about once every 11 years in the area

Heat waves

7% of expected damage

Well above average · higher than 89% of U.S. places

Recorded about 17 times a year in the area

Cold waves

6% of expected damage

Below average · higher than 45% of U.S. places

Recorded about 2 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingDroughtAvalanchesTsunamisVolcanic 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 Dennis flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Delaware County.

Disasters that hit Dennis

Federal disasters declared here

None of the disasters declared for Delaware County shows FEMA aid or repair money reaching Dennis itself in FEMA’s records.

Brought FEMA money into DennisDeclared for Delaware County only

Delaware County has had 26 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. Dennis 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 Dennis’s own flood-insurance community; household aid to the registrant’s city; repair grants to Dennis. 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.