Glenns Ferry’s biggest natural hazard is avalanches
Most of the natural-hazard damage FEMA expects in Glenns Ferry comes from avalanches, and overall the risk is very high for a U.S. community. Flood insurance has paid 1 claim here since 2011.
What stands out about Glenns Ferry’s weather risks
Read from FEMA’s records below. The page puts what stands out first.
What Glenns Ferry faces
Each hazard’s share of the damage FEMA expects here, and how it compares with the rest of the country.
Avalanches
Wildfire
Inland flooding
Does Glenns Ferry flood? Rarely: 1 flood claim since 2011
Every paid claim on a federal flood insurance policy in Glenns Ferry, from FEMA’s records.
Glenns Ferry isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Elmore County.How exposed is Glenns Ferry?
FEMA expects yearly storm and flood damage to homes and buildings here to be higher than in 92% of U.S. communities, mostly from avalanches and wildfires.
Rated higher than 204 of the 234 Idaho towns we cover.
Glenns Ferry is smaller than a census tract, so it shares the figures of the tract around its center.
Federal disasters declared here
None of the disasters declared for Elmore County shows FEMA aid or repair money reaching Glenns Ferry itself in FEMA’s records.
Elmore County has had 9 natural disasters declared since 1953, most often floods and fires.
Get ready for what Glenns Ferry actually faces
A short kit for its top hazards, what to check before you buy, and where neighbors get alerts.
- Check the avalanche forecast before heading into the backcountry.
- Carry a beacon, probe and shovel, and know how to use them.
- Most avalanches are set off by the people caught in them.
- 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.
- 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.
Most disasters here begin in July–August
The month each of Elmore County’s 9 declared disasters began, since 1953.
What these numbers can and can’t tell you
- An average, not a forecast. FEMA’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 there, so a big city isn’t rated riskier just for having more buildings.
- Money that reached town. Flood claims are matched to Glenns Ferry’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Glenns Ferry.
- It follows property value. FEMA’s model weighs damage to buildings, so a place that recently lost many homes can rate lower than it feels.
Storm stories
Memories, warnings and help from neighbors in Glenns Ferry.
Your answer becomes a post in Town Square.
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. Preparedness tips: Ready.gov. An average of past damage, not a forecast.