Wildfire low, radon 8.2%: how Bellerive stands on hazards
Wildfire is rare near Bellerive: 0.1% of the land within 25 km has burned since 1986, a burn rate of 0.002% a year. Earthquakes add more: NRCan’s model puts building losses at $0.23 a year per $1,000 of value, against $0.030 for the typical town. Hazard risk gives Bellerive a grade of C−, from earthquakes and radon alone.
What stands out about Bellerive’s hazards
For Bellerive, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Bellerive faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Bellerive grades C− for hazard risk
The grade weighs Bellerive’s seismic risk and radon equally, and wildfire is one-sided: a high band counts against a town, a low one earns nothing.
Its place: #383 of 507 in Quebec and #2,362 of 2,589 Canadian towns.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Little of the land around Bellerive has burned: 0% within 5 km, 0.1% within 25 km since 1986
Fires mapped since 1986 around where Bellerive’s residents live, and the fuel next to their homes.
Low: the land around Bellerive burns at 0.002% a year, where the typical Canadian town sees 0.000%.
The 5 km ring around Bellerive’s homes is clear of burns since 1986, the nearest 14 km out.
Forest makes up 0.5% of the land within 5 km of Bellerive and 0.9% within 25 km, little for a forest fire to run through.
Shares of land within 5 and 25 km of populated blocks: burned at least once in 1986–2025 (CWFIS burned-area composite), forest fuel and grass (fire behaviour fuel types, 2026, 250 m grid).
Burn rate a year, towns in Quebec · highest of 513
At 0.002% a year, Bellerive is near the top in Quebec: 35th of 513, behind Mistissini (0.31%).
Each bar: the yearly average share of land within 25 km of a town’s homes that burned, 1986–2025 (CWFIS); the seven highest towns of 2,500 people or more.
Low, like 92% of the country’s 2,610 towns: the land around Bellerive burns, but slower than in the 7.5% above it.
Bands of the yearly burn rate: low under 0.05%, moderate under 0.25%, high under 1%, very high 1% or more; towns of 2,500 people or more.
Fire danger and active fires (CWFIS)
Canadian Wildland Fire Information System: National Burned Area Composite 1986–2025 and fire behaviour fuel types (2026), Natural Resources Canada. Measured within 25 km and 5 km of each populated dissemination area; past fire, not a forecast.
No flood study is listed for Bellerive
Flood studies whose area touches Bellerive, from NRCan’s inventory, each linked to its owner.
The inventory has nothing for Bellerive, but a local or conservation-authority map may still exist.
Towns with a flood study on file
Mapping in Quebec reaches 45% of towns, below the 58% across Canada, and not Bellerive.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Nothing here counts toward Risk; the studies are pointers to the maps their owners keep for Bellerive.
The inventory’s own caution (NRCan): “The Canada Flood Map (CFM) does not include every flood hazard map in Canada and may be incomplete or contain inaccuracies. It should not be relied upon as the official source of flood mapping information. Furthermore, if a map appears to be missing, this does not necessarily mean that the area has never been mapped. For the official version of a map, updated information, or confirmation of applicable regulations, please contact the local authority responsible for flood mapping.”
High seismic risk in Bellerive: $0.23 per $1,000 of buildings a year
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
The typical town loses $0.030 a year to shaking; Bellerive loses $0.23, 7.6 times as much.
Figures for earthquake risk are published for the city of Longueuil as a whole, not for Bellerive alone.
Shaking damage a year per $1,000 of building value
Above the middle in Quebec: Bellerive’s $0.23 against a median of $0.14, with La Pocatière highest at $0.48.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
Bellerive is in the top tenth of Canada’s 2,611 towns for earthquake risk; 6.4% rank higher.
Each column: the share of Canada’s towns of 2,500 people or more in that range of yearly loss per $1,000 (NRCan, 2022).
For Bellerive the model prices shaking damage to buildings, nothing more.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Radon about average around Bellerive: 8.2% over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Near the middle for radon: Bellerive’s area 8.2%, the typical Canadian town 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Around Bellerive, 8.2% of tests topped the guideline, about the same as the typical town in Quebec (8.2%).
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Bellerive is in the 5–10% band with 37% of Canada’s 2,611 towns; 26% have more.
Each bar: the share of Canada’s towns of 2,500 people or more whose survey area had that share of tests over 200 Bq/m³.
A low area share in Bellerive doesn’t clear a house, nor does a high one condemn it: test.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Not measured by town: radon tests (the Monteregie health region)
Where to get warnings in Bellerive
Environment and Climate Change Canada issues the weather alerts for Bellerive; Alert Ready carries the urgent ones to phones, radio and TV.
| Alert | What it means |
|---|---|
| Warning | Severe weather is happening or about to: act now. |
| Watch | Conditions favour severe weather: be ready. |
| Advisory | Weather that is less severe but could disrupt the day. |
| Special weather statement | Unusual weather worth knowing about. |
| Special air quality statement | Poor air, often wildfire smoke. |
For fires near Bellerive, the national fire information system maps danger and active fires daily; local authorities give any evacuation order.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Bellerive
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Bellerive | Low | $0.23 | 8.2% | None listed |
| Carillon / Saint-Pie-X 5,457 · 1.0 km | Low | $0.23 | 8.2% | None listed |
| Centre 6,627 · 1.1 km | Low | $0.23 | 8.2% | None listed |
| Collectivité Nouvelle 3,587 · 1.3 km | Low | $0.23 | 8.2% | None listed |
| Vieux-Longueuil 15,414 · 2.1 km | Low | $0.23 | 8.2% | None listed |
| Sacré-Coeur 20,375 · 2.2 km | Low | $0.23 | 8.2% | None listed |
| Notre-Dame-de-Grâces 10,204 · 2.3 km | Low | $0.23 | 8.2% | None listed |
None of the places around has more fire nearby than Bellerive (low); Carillon / Saint-Pie-X comes closest (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Bellerive faces
What to do about the hazards Bellerive faces, and what to ask before you buy.
- Test for three months in winter.
- Over 200 Bq/m³: fix it.
- Kits are cheap; pros test too.
- Never drive through floodwater.
- Move papers and medicines upstairs.
- Ask whether your street is mapped.
- Drop, cover and hold on.
- Strap the water heater down.
- Keep 72 hours of supplies.
- Has it had a radon test?
- Ask the municipality for flood maps.
- Are flood and wildfire insured?
- Is earthquake cover included?
What this data can and can’t tell you
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Bellerive’s included.
- Wildfire counts one way. Burned land within 25 km of where people live, averaged over 1986–2025 and checked for fuel near homes, is the measure; it looks back, not ahead, and only ever counts against Bellerive.
- Flood studies aren’t flood zones. The flood inventory points to maps; it is incomplete and not the official source, so ask the municipality about any street in Bellerive.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Bellerive takes its 2007 health region’s share.
Questions about flooding and hazards in Bellerive
Is radon a problem in Bellerive?
Around Bellerive, 110 survey homes were tested and 8.2% came in over 200 Bq/m³, a guide to the area, not to any one home.
Is Bellerive at risk of wildfire?
Fire has reached 0.1% of the land around Bellerive since 1986 (last in 2024); at low, it neither helps nor hurts the grade.
How is Bellerive’s Hazard risk Grade worked out?
Bellerive grades C− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Does Bellerive flood?
With 0 studies on the inventory, Bellerive’s flood risk is unmapped nationally; check with the municipality before buying.
How big is the earthquake risk in Bellerive?
About $0.23 a year per $1,000 of building value, NRCan’s long-run expectation for Bellerive.
Seismic risk: Natural Resources Canada. Radon: Health Canada. Wildfire: Canadian Wildland Fire Information System. Flood studies: Natural Resources Canada, Canada Flood Map Inventory. Contains information licensed under the Open Government Licence – Canada.
Sources: NRCan, Canada’s Seismic Risk Model 2022 · Health Canada, Cross-Canada Survey of Radon Concentrations in Homes · CWFIS, National Burned Area Composite and FBP fuel types · NRCan, Canada Flood Map Inventory. Under the Statistics Canada Open Licence.
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).