Photo: Quintin Soloviev · CC BY 4.0FEMA puts Deltana’s expected hazard damage per building above that of 92% of U.S. towns, mostly from wildfire
On FEMA’s National Risk Index, Deltana gets a D for hazard risk: higher expected damage per building than 92% of U.S. towns. Most of that expected damage is wildfire (60%), then earthquakes (28%). FEMA’s files show no paid flood insurance claims here.
Graded on FEMA’s expected yearly building damage per dollar of building value (NRI v1.20, December 2025), weighted by where residents live; flood claims are shown, not graded. How hazard risk is graded
What Deltana faces
Each hazard’s share of the building damage FEMA expects here, and how its rate compares with the rest of the country.
Wildfire
Earthquakes
River and rain flooding
Shares are of FEMA’s expected building damage, the measure the grade uses; ranks compare each hazard’s building-damage rate with all 85,154 U.S. census tracts. In FEMA’s terms, river and rain flooding is FEMA’s “Inland Flooding” (rivers and streams overflowing their banks, or rain overwhelming drainage). FEMA defines coastal flooding as high or rising tides and storm surge, so surge damage is counted there. Drought isn’t listed: FEMA counts its losses in crops only.
What’s behind Deltana’s grade
Wildfire is 60% of the building damage FEMA expects in Deltana, and Deltana’s rate of wildfire damage is in the top 1% of U.S. census tracts. Next is earthquakes at 28% (higher than 89% of U.S. census tracts).
D higher expected damage per building than 92% of U.S. towns (21,298).
All of Deltana’s residents live in one census tract; the figures are that tract’s.
In dollars, FEMA expects about $4.6M a year in losses across Deltana: $2.5M to buildings, the rest to people and crops.
Does Deltana flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Deltana. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
The storms Deltana remembers
None of the 9 disasters declared for its 2 counties shows FEMA aid or repair money reaching Deltana itself in FEMA’s records, so these are its biggest flood-claim years.
Its 2 counties have had 9 natural disasters declared by the President since 1953, most often floods, then severe storms.
Also 2 FEMA wildfire suppression grants (Fire Management Assistance, not a disaster declaration) for fires in its 2 counties, 2004–2026.
Deltana and its neighbors
Deltana has the lowest expected damage per building of the 1 graded towns here. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Deltana | Dmore damage than 92% | wildfire | 0 |
| Big Delta | — | 565 residents; we grade 1,000+ | |
| Delta Junction | — | not graded yet | |
Hazard risk = FEMA’s expected yearly building damage per dollar of building value, vs. the 21,298 U.S. towns we grade; the map is shaded by fifths of the same scale. Flood claims = paid federal flood insurance claims on record.
Get ready for what Deltana faces
A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.
- Clear dead leaves and brush within 5 feet of the house.
- Sign up for local alerts and know two ways out.
- Keep N95 masks for smoky days.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- Turn around at flooded roads: a foot of moving water can carry off a car.
- Flood insurance usually takes 30 days to start, so buy it before the forecast.
- Keep papers and medicines up high, in a grab-and-go bag.
- Look up the address on FEMA’s flood map.
- Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
- Get a flood insurance quote early: policies usually start 30 days after you buy.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Questions about natural hazards in Deltana
Is Deltana at risk for natural disasters?
On FEMA’s National Risk Index, Deltana has higher expected damage per building than 92% of U.S. towns: D for hazard risk. Most of the expected damage is wildfire (60%) and earthquakes (28%). The figures are for the one census tract the town shares with its neighbors. This is FEMA’s model of an average year for today’s buildings, not a forecast.
Is Deltana in a flood zone?
Flood zones are drawn street by street, so the answer depends on the address: look it up on FEMA’s flood map.
How much is flood insurance in Deltana?
FEMA’s Community Rating System list shows no discount for Deltana’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Deltana at risk from wildfire?
It is the largest share of the building damage FEMA expects here (60%), and Deltana’s rate for it is in the top 1% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Deltana.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Deltana’s residents lived in the 2020 census; 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. Homes: Census ACS 2020–24. Preparedness tips: Ready.gov. FEMA’s model is an average of expected damage, not a forecast. How hazard risk is graded.