FEMA expects about as much hazard damage per building in Helena Valley Southeast as in the typical U.S. town, mostly from river and rain flooding
On FEMA’s National Risk Index, Helena Valley Southeast gets a B− for hazard risk: lower expected damage per building than 54% of U.S. towns, #24 of 42 in Montana. Most of that expected damage is river and rain flooding (70%), then earthquakes (21%). Flood insurance has paid 5 claims here since 1979.
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 Helena Valley Southeast 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
Earthquakes
Wildfire
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 Helena Valley Southeast’s grade
River and rain flooding is 70% of the building damage FEMA expects in Helena Valley Southeast, and Helena Valley Southeast’s rate of river and rain flooding damage is higher than 55% of U.S. census tracts. Wildfire adds 7%, at a rate in the top 6% of U.S. census tracts.
B− #24 of 42 in Montana; lower expected damage per building than 54% of U.S. towns (21,298).
Helena Valley Southeast’s residents live in 3 census tracts; FEMA’s figures are combined by where they live.
The typical Montana town has lower expected damage than 54% of U.S. towns; within the state, Helena Valley Southeast has more expected damage per building than 56% of Montana towns.
In dollars, FEMA expects about $4.2M a year in losses across Helena Valley Southeast: $1.8M to buildings, the rest to people and crops.
Does Helena Valley Southeast flood? Rarely: 5 flood claims since 1979
Every paid claim on a federal flood insurance policy in Helena Valley Southeast, from FEMA’s records: 1.4 per 1,000 homes, fewer than 70% of the 13,809 U.S. towns with a flood insurance record.
Helena Valley Southeast isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Lewis and Clark County.The storms Helena Valley Southeast remembers
None of the 6 disasters declared for Lewis and Clark County shows FEMA aid or repair money reaching Helena Valley Southeast itself in FEMA’s records, so these are its biggest flood-claim years.
- 19792 flood claims paidNo declaration for the county that year
- 19812 flood claims paidThe year of Severe Storms and Flooding, declared for Lewis and Clark County
- 19961 flood claims paidThe year of Severe Storms, Flooding, and Ice Jams, declared for Lewis and Clark County
Lewis and Clark County has had 6 natural disasters declared by the President since 1953, most often floods, then severe storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Also 7 FEMA wildfire suppression grants (Fire Management Assistance, not a disaster declaration) for fires in Lewis and Clark County, 2000–2024.
Old photos of Helena Valley Southeast after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Helena Valley Southeast archive →Helena Valley Southeast and its neighbors
Helena Valley Southeast is 3rd of the 4 graded towns here, from least expected damage per building to most. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Helena | Aless damage than 92% | river and rain flooding | 16 |
| East Helena | B−less damage than 54% | river and rain flooding | 2 |
| Helena Valley Southeast | B−less damage than 54% | river and rain flooding | 5 |
| Helena Valley Northeast | Cmore damage than 75% | river and rain flooding | 6 |
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 Helena Valley Southeast faces
A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.
- 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.
- 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.
- 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 Helena Valley Southeast
Is Helena Valley Southeast at risk for natural disasters?
On FEMA’s National Risk Index, Helena Valley Southeast has lower expected damage per building than 54% of U.S. towns: B− for hazard risk, #24 of 42 in Montana. Most of the expected damage is river and rain flooding (70%) and earthquakes (21%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Helena Valley Southeast flood?
Flood insurance has paid 5 claims in Helena Valley Southeast since 1979, $31K in all, or 1.4 per 1,000 homes, fewer than 70% of U.S. towns with a flood insurance record.
Is Helena Valley Southeast 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 Lewis and Clark County, 14% of homes in mapped flood zones carry federal flood insurance, and 0.6% of all homes do.
How much is flood insurance in Helena Valley Southeast?
FEMA’s Community Rating System list shows no discount for Helena Valley Southeast’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Helena Valley Southeast at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (70%), and Helena Valley Southeast’s rate for it is higher than 55% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Helena Valley Southeast.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Helena Valley Southeast’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.