Photo: Bull-Doser · Public domainVaudreuil-Dorion is on Canada’s flood inventory: 2 listed, led by Communauté métropolitaine de Montréal
Fire has left almost no mark near Vaudreuil-Dorion: 0% of the land within 25 km since 1986, 0.001% a year. Seismic risk runs high: $0.17 of expected damage per $1,000 of buildings a year, the typical town $0.030. About as many homes carry radon around Vaudreuil-Dorion as elsewhere, 8.2% over the guideline where the typical town has 6.6%. Hazard risk gives Vaudreuil-Dorion a grade of C−, from earthquakes and radon alone.
What stands out about Vaudreuil-Dorion’s hazards
For Vaudreuil-Dorion, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Vaudreuil-Dorion faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Vaudreuil-Dorion: C−
Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Vaudreuil-Dorion with little fire nearby would get no credit for it.
Its place: #294 of 507 in Quebec and #2,256 of 2,589 Canadian towns.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Few fires near Vaudreuil-Dorion: 0% within 5 km, 0% within 25 km
Past fire around Vaudreuil-Dorion’s homes, from the national burned-area record, with the fuel within 5 km.
Around Vaudreuil-Dorion fire takes 0.001% of the land in a typical year, the typical Canadian town 0.000%, which is low.
Vaudreuil-Dorion’s homes have had no fire within 5 km since 1986; the closest was 7.6 km away.
About as much forest grows next to Vaudreuil-Dorion’s homes (6.9% within 5 km) as across 25 km (2.7%).
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
Vaudreuil-Dorion burns at 0.001% a year, 136th of 513 towns in Quebec; the leader, Mistissini, reaches 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.
Beside 2,610 Canadian towns, Vaudreuil-Dorion reads low, with 92% of them; only 7.5% rank higher.
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.
Flooding around Vaudreuil-Dorion is mapped in 2 studies, the newest by Communauté métropolitaine de Montréal
What Canada’s Flood Map Inventory lists for Vaudreuil-Dorion: who studied flooding and where to see their maps.
The newest of 2 studies covering Vaudreuil-Dorion is Communauté métropolitaine de Montréal’s, from 2008; open its map to see the zones.
| Study | By | Year | Status |
|---|---|---|---|
| Montréal-Argenteuil-Deux-Montagnes-Vaudreuil-Soulanges | Communauté métropolitaine de Montréal | 2008 | final |
| St-Louis-Varennes | Gouvernement du Québec | 1977 | final |
Towns with a flood study on file
Flood maps are thinner in Quebec, 45% of towns against 58% nationally, but Vaudreuil-Dorion has one.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
No single decade dominates: 2 studies for Vaudreuil-Dorion between the 1970s and the 2000s.
Study dates as the NRCan inventory lists them, one count per study touching Vaudreuil-Dorion.
Flood studies don’t enter the grade; they are listed so you can open the official map for Vaudreuil-Dorion.
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.”
Natural Resources Canada, Canada Flood Map Inventory; links go to each study’s owner.
Earthquakes cost buildings in Vaudreuil-Dorion $0.17 per $1,000 a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
The typical town loses $0.030 a year to shaking; Vaudreuil-Dorion loses $0.17, 5.7 times as much.
Shaking damage a year per $1,000 of building value
Typical for its province: Vaudreuil-Dorion at $0.17 beside a median in Quebec of $0.14, with La Pocatière on top 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.
More earthquake risk than most: only 14% of Canada’s 2,611 towns are above Vaudreuil-Dorion.
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).
Only shaking damage to buildings in Vaudreuil-Dorion is counted; landslides, liquefaction, tsunami and fire after a quake aren’t.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
8.2% of homes tested around Vaudreuil-Dorion are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
8.2% of tested homes around Vaudreuil-Dorion were over the guideline, much like the typical Canadian town at 6.6%. Vaudreuil-Dorion doesn’t get its own radon tests figures; the ones here come from the Monteregie health region.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Around Vaudreuil-Dorion, 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.
Vaudreuil-Dorion 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.
Radon varies from house to house in Vaudreuil-Dorion, so the survey is a reason to test, not a result for yours.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Vaudreuil-Dorion
Alerts for Vaudreuil-Dorion come from Environment and Climate Change Canada and, for emergencies, Alert Ready.
| 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. |
Fire danger and active fires near Vaudreuil-Dorion are mapped daily by the Canadian Wildland Fire Information System; evacuation orders come from the municipality or province.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Vaudreuil-Dorion
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Vaudreuil-Dorion | Low | $0.17 | 8.2% | Yes |
| Vaudreuil-sur-le-Lac 1,340 · 2.6 km | Low | $0.17 | 8.2% | Yes |
| Terrasse-Vaudreuil 1,883 · 4.0 km | Low | $0.19 | 8.2% | Yes |
| Pincourt 15,220 · 5.4 km | Low | $0.17 | 8.2% | Yes |
| L'Île-Perrot 11,921 · 6.6 km | Low | $0.16 | 8.2% | Yes |
| Senneville 1,042 · 6.8 km | Low | $0.15 | 6.8% | Yes |
| Sainte-Anne-de-Bellevue 5,393 · 7.4 km | Low | $0.17 | 6.8% | Yes |
None of the places around has more fire nearby than Vaudreuil-Dorion (low); Vaudreuil-sur-le-Lac comes closest (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Vaudreuil-Dorion faces
What to do about the hazards Vaudreuil-Dorion 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?
- Check the address on the flood map.
- Are flood and wildfire insured?
- Is earthquake cover included?
What this data can and can’t tell you
- 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 Vaudreuil-Dorion.
- Radon is a survey. The radon share comes from about 14,000 long-term home tests in 2009–2011, pooled for now by the 2007 health region Vaudreuil-Dorion sits in.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Vaudreuil-Dorion’s included.
- Flood studies aren’t flood zones. A study’s area can be a whole watershed or province, so being on the inventory says a map exists, not that a home in Vaudreuil-Dorion floods.
Questions about flooding and hazards in Vaudreuil-Dorion
Is Vaudreuil-Dorion at risk of wildfire?
Fire has reached 0% of the land around Vaudreuil-Dorion since 1986 (last in 2025); at low, it neither helps nor hurts the grade.
How is Vaudreuil-Dorion’s Hazard risk Grade worked out?
Vaudreuil-Dorion’s Hazard risk grade is C−, built on earthquakes and radon with a one-sided wildfire input.
Does Vaudreuil-Dorion flood?
Vaudreuil-Dorion’s area has been studied for flooding, and the owner’s map shows which streets lie in a zone; the grade leaves flood out.
How big is the earthquake risk in Vaudreuil-Dorion?
NRCan’s model expects shaking to cost buildings in Vaudreuil-Dorion $0.17 a year for every $1,000 of their value, on average over many years.
Is radon a problem in Vaudreuil-Dorion?
Around Vaudreuil-Dorion, 110 survey homes were tested and 8.2% came in over 200 Bq/m³, a guide to the area, not to any one home.
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).