Photo: Ken Lund · CC BY-SA 2.0More hazard damage per building is expected in Dayton than in 93% of U.S. towns, led by wildfire
On FEMA’s National Risk Index, Dayton gets a D for hazard risk: higher expected damage per building than 93% of U.S. towns, #39 of 42 in Nevada. Most of that expected damage is wildfire (50%), then river and rain flooding (35%). Flood insurance has paid 2 claims here since 2017.
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 Dayton faces
Each hazard’s share of the building damage FEMA expects here, and how its rate compares with the rest of the country.
Wildfire
River and rain flooding
Earthquakes
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 Dayton’s grade
Wildfire is 50% of the building damage FEMA expects in Dayton, and Dayton’s rate of wildfire damage is in the top 1% of U.S. census tracts. Next is river and rain flooding at 35% (higher than 74% of U.S. census tracts).
D #39 of 42 in Nevada; higher expected damage per building than 93% of U.S. towns (21,298).
Dayton’s residents live in 3 census tracts; FEMA’s figures are combined by where they live.
The typical Nevada town has higher expected damage than 81% of U.S. towns; within the state, Dayton has more expected damage per building than 93% of Nevada towns.
In dollars, FEMA expects about $9.4M a year in losses across Dayton: $8.2M to buildings, the rest to people and crops.
Does Dayton flood? Rarely: 2 flood claims since 2017
Every paid claim on a federal flood insurance policy in Dayton, from FEMA’s records: 0.3 per 1,000 homes, fewer than 94% of the 13,809 U.S. towns with a flood insurance record.
Dayton isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Lyon County.The storms Dayton remembers
None of the 9 disasters declared for Lyon County shows FEMA aid or repair money reaching Dayton itself in FEMA’s records, so these are its biggest flood-claim years.
- 20172 flood claims paidThe year of Severe Winter Storms, Flooding, and Mudslides, declared for Lyon County
Lyon County has had 9 natural disasters declared by the President since 1953, most often severe storms, then floods. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Also 2 FEMA wildfire suppression grants (Fire Management Assistance, not a disaster declaration) for fires in Lyon County, 2006–2018.
Old photos of Dayton after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Dayton archive →Dayton and its neighbors
Dayton 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 |
|---|---|---|---|
| Dayton | Dmore damage than 93% | wildfire | 2 |
| Silver City | — | 118 residents; we grade 1,000+ | |
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 Dayton 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.
- 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.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- 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 Dayton
Is Dayton at risk for natural disasters?
On FEMA’s National Risk Index, Dayton has higher expected damage per building than 93% of U.S. towns: D for hazard risk, #39 of 42 in Nevada. Most of the expected damage is wildfire (50%) and river and rain flooding (35%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Dayton flood?
Flood insurance has paid 2 claims in Dayton since 2017, $13K in all, or 0.3 per 1,000 homes, fewer than 94% of U.S. towns with a flood insurance record.
Is Dayton 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. In Lyon County, 18% of homes in mapped flood zones carry federal flood insurance, and 1.2% of all homes do.
How much is flood insurance in Dayton?
FEMA’s Community Rating System list shows no discount for Dayton’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Dayton at risk from wildfire?
It is the largest share of the building damage FEMA expects here (50%), and Dayton’s rate for it is in the top 1% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Dayton.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Dayton’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.