Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainHazards in Pierrefonds-Est: wildfire low, radon over the guideline in 6.8% of tested homes
No wildfire is mapped within 25 km of Pierrefonds-Est’s homes since 1986 (0% of the land, 0.001% a year). Seismic risk runs high: $0.20 of expected damage per $1,000 of buildings a year, the typical town $0.030. Pierrefonds-Est grades C for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Pierrefonds-Est’s hazards
For Pierrefonds-Est, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Pierrefonds-Est faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Pierrefonds-Est: C
Earthquake risk and radon make Pierrefonds-Est’s grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
Its place: #161 of 507 in Quebec and #2,110 of 2,589 Canadian towns.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. The radon share rests on 74 home tests in the survey area, so a few homes move it. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Wildfire is rare near Pierrefonds-Est: 0% of the land within 25 km burned since 1986, 0% within 5 km
Fires mapped since 1986 around where Pierrefonds-Est’s residents live, and the fuel next to their homes.
With 0.001% burned a year, Pierrefonds-Est is among the many low-band places (the typical Canadian town 0.000%).
Nothing inside 5 km of Pierrefonds-Est’s homes has burned since 1986, and the nearest scar is 11 km off.
Land that isn’t forest covers nearly all the ground around Pierrefonds-Est: forest fuel is 0.4% within 5 km and 1.9% within 25 km.
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 0.001% a year, Pierrefonds-Est ranks 136th of the 513 towns in Quebec; Mistissini leads at 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.
7.5% of Canada’s 2,610 towns burn fast enough to rank moderate or above; Pierrefonds-Est stays low, with 92%.
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.
The flood map inventory lists nothing for Pierrefonds-Est
Flood studies whose area touches Pierrefonds-Est, from NRCan’s inventory, each linked to its owner.
No flood study on the national inventory covers Pierrefonds-Est; ask the municipality, which is the authority for its flood maps.
Towns with a flood study on file
No study touches Pierrefonds-Est; in Quebec, 45% of towns have one, below Canada’s 58%.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Flood is shown here, never graded: a study says where a map exists, not how many of Pierrefonds-Est’s homes stand in a flood zone.
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 Pierrefonds-Est: $0.20 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.
Pierrefonds-Est’s $0.20 is about 6.7 times the typical town’s $0.030: it sits in one of Canada’s more active seismic zones.
Shaking damage a year per $1,000 of building value
Pierrefonds-Est’s $0.20 tops the median in Quebec, $0.14, though La Pocatière reaches $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.
Few of Canada’s 2,611 towns face more earthquake damage than Pierrefonds-Est: 8.5% of them.
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).
What a quake does after the shaking, fire, landslides, tsunami, falls outside NRCan’s figure for Pierrefonds-Est.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean). · Area behind the earthquake risk figures: the city of Montréal
Radon about average around Pierrefonds-Est: 6.8% over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Measured across the Montreal health region: radon tests
The survey area of Pierrefonds-Est reads 6.8%, a shade from the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
The typical town in Quebec has 8.2% over 200 Bq/m³; Pierrefonds-Est’s area has 6.8%, much the same.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Between 5% and 10% of tests over the guideline: Pierrefonds-Est, and 37% of Canada’s 2,611 towns; 26% are higher.
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 Pierrefonds-Est 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).
Where to get warnings in Pierrefonds-Est
Environment and Climate Change Canada issues the weather alerts for Pierrefonds-Est; 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. |
In fire season, check CWFIS for danger and active fires around Pierrefonds-Est, and listen to local authorities for orders.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Pierrefonds-Est
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Pierrefonds-Est | Low | $0.20 | 6.8% | None listed |
| Dollard-Des Ormeaux 50,246 · 2.0 km | Low | $0.23 | 6.8% | None listed |
| Sainte-Dorothée 38,183 · 2.2 km | Low | $0.21 | 12% | Yes |
| L'Île-Bizard–Sainte-Geneviève 18,885 · 5.2 km | Low | $0.20 | 6.8% | Yes |
| Pointe-Claire 37,437 · 5.6 km | Low | $0.19 | 6.8% | Yes |
| Laval-Ouest 11,034 · 6.1 km | Low | $0.21 | 12% | Yes |
| Pierrefonds-Ouest 30,978 · 6.3 km | Low | $0.20 | 6.8% | Yes |
Dollard-Des Ormeaux (low) has the heaviest fire record of Pierrefonds-Est’s neighbours, and Pierrefonds-Est (low) matches or beats it.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Pierrefonds-Est faces
Practical steps for Pierrefonds-Est’s hazards, most pressing first.
- 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, Pierrefonds-Est’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 Pierrefonds-Est.
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Pierrefonds-Est without grading them.
- Radon is a survey. Radon figures pool the survey’s home tests by area: postal areas once their boundaries arrive, the 2007 health region around Pierrefonds-Est until then.
Questions about flooding and hazards in Pierrefonds-Est
How big is the earthquake risk in Pierrefonds-Est?
Expected earthquake damage in Pierrefonds-Est comes to $0.20 a year for each $1,000 that buildings are worth.
Is radon a problem in Pierrefonds-Est?
6.8% of the 74 homes Health Canada tested around Pierrefonds-Est topped the guideline; your own house needs its own test.
How is Pierrefonds-Est’s Hazard risk Grade worked out?
Pierrefonds-Est grades C for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Is Pierrefonds-Est at risk of wildfire?
Not much by Canadian standards: Pierrefonds-Est’s band is low, with 0% of the land within 25 km burned since 1986 (last in 2025), so wildfire doesn’t change its grade.
Does Pierrefonds-Est flood?
No study on Canada’s Flood Map Inventory covers Pierrefonds-Est (0), which doesn’t mean it has never been mapped, so ask the municipality.
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).