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D−Hazard risk
Natural hazards in Osburn · FEMA

FEMA expects more hazard damage per building in Osburn than in 98% of U.S. towns, mostly from river and rain flooding

On FEMA’s National Risk Index, Osburn gets a D− for hazard risk: higher expected damage per building than 98% of U.S. towns. Most of that expected damage is river and rain flooding (98%). FEMA’s files show no paid flood insurance claims here.

River and rain flooding 98%

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

more than 98%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade
Hazard risk
D−
in Idaho · higher than 98% of U.S. towns
Main hazard
River and rain flooding
98% of expected building damage
Flood claims
0
paid since 1978 · $0
Disasters paid out here
0
of 13 declared for Shoshone County
By hazard

What Osburn faces

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

River and rain flooding

98%of expected building damage
Well above average · in the top 1% of U.S. census tracts
Recorded about once a year in the area
Smaller shares here
 Wildfire Earthquakes Ice storms Strong wind Winter storms Tornadoes Hail Cold waves Heat waves Landslides Lightning Avalanches top 0%
FEMA models no building damage here
Coastal floodingHurricanesTsunamisVolcanic activity
People, not buildings.Counting harm to people as well as buildings, FEMA’s model puts avalanches at 36% of Osburn’s expected losses. Avalanches do little damage to buildings (0.0%), so they aren’t part of the grade.

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.

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.
Hazard risk grade

What’s behind Osburn’s grade

River and rain flooding is 98% of the building damage FEMA expects in Osburn, and Osburn’s rate of river and rain flooding damage is in the top 1% of U.S. census tracts.

Where Osburn sits
Osburn
Least damageMiddleMost damage

D− higher expected damage per building than 98% of U.S. towns (21,298).

All of Osburn’s residents live in one census tract; the figures are that tract’s.

What drives the damage to buildings
River and rain flooding98%Everything else2%

In dollars, FEMA expects about $3.3M a year in losses across Osburn: $2.0M to buildings, the rest to people and crops.

Shared tract.All of Osburn’s 1,567 residents (2020 census) live in one census tract, which it shares with Wallace city (791 residents) and Mullan city (646 residents) and Silverton CDP (594 residents). FEMA publishes its model by tract, so the rate and the hazard mix are the tract’s, the same for all of them. The flood claims below are the town’s own.
A shared figure. The grade describes the whole tract, not each street in it, and FEMA’s model is an average year for today’s buildings, not a record: the claims below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Osburn flood? No paid flood claims on record

FEMA’s records show no paid flood insurance claims in Osburn. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.

of homes in flood zones are insured
of all homes are insured
No community discount

Osburn isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Shoshone County.
Disasters

The storms Osburn remembers

None of the 13 disasters declared for Shoshone County shows FEMA aid or repair money reaching Osburn itself in FEMA’s records, so these are its biggest flood-claim years.

Disasters declared, by decade
Paid out in OsburnShoshone County only

Shoshone County has had 13 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.

Be ready

Get ready for what Osburn faces

A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.

When the river rises
  • 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.
More from Ready.gov ↗
Before you buy or rent
  • 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.
When a storm is coming
Forecast and alertsWeather →911, the nearest ERSafety →

Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.

Questions about natural hazards in Osburn

Is Osburn at risk for natural disasters?

On FEMA’s National Risk Index, Osburn has higher expected damage per building than 98% of U.S. towns: D− for hazard risk. Most of the expected damage is river and rain flooding (98%). 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 Osburn 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 Shoshone County, 5% of homes in mapped flood zones carry federal flood insurance, and 1.6% of all homes do.

How much is flood insurance in Osburn?

FEMA’s Community Rating System list shows no discount for Osburn’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.

Is Osburn at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (98%), and Osburn’s rate for it is in the top 1% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Osburn.

Town Square →
Start the conversation

Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Osburn’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.