Photo: Veillg1 · CC BY-SA 4.0Saint-Mathieu-de-Beloeil is on Canada’s flood inventory: 1 listed, led by Gouvernement du Québec
Little of the land around Saint-Mathieu-de-Beloeil has burned: 0.1% within 25 km since 1986, or 0.002% a year. Shaking is a bigger worry than in most places, at $0.15 a year per $1,000 of building value ($0.030 typical). In Health Canada’s survey, 8.2% of homes tested in Saint-Mathieu-de-Beloeil’s area exceeded 200 Bq/m³, close to the typical 6.6%. Saint-Mathieu-de-Beloeil grades C for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Saint-Mathieu-de-Beloeil’s hazards
Four national sources, each read for Saint-Mathieu-de-Beloeil: earthquakes, radon, past fires and flood studies.
What Saint-Mathieu-de-Beloeil faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Saint-Mathieu-de-Beloeil grades C for hazard risk
Seismic risk and radon set Saint-Mathieu-de-Beloeil’s grade, wildfire can drag it down, and flood mapping stays out of it.
Its place: #270 of 507 in Quebec and #2,223 of 2,589 Canadian towns.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. Small fires and grass fires are largely missing from the national burned-area record.
Wildfire is rare near Saint-Mathieu-de-Beloeil: 0.1% of the land within 25 km burned since 1986, 0% within 5 km
Past fire around Saint-Mathieu-de-Beloeil’s homes, from the national burned-area record, with the fuel within 5 km.
The land within 25 km of Saint-Mathieu-de-Beloeil burns at 0.002% a year on average, the low band; the typical Canadian town: 0.000%.
No fire has burned within 5 km of Saint-Mathieu-de-Beloeil’s homes since 1986; the nearest burn is 6.2 km away.
Little near Saint-Mathieu-de-Beloeil’s homes can carry a forest fire; only 2% of the land within 5 km is forest fuel, and 1.4% 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
Saint-Mathieu-de-Beloeil ranks 35th of the 513 towns in Quebec for burn rate, at 0.002% a year; Mistissini leads with 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.
Saint-Mathieu-de-Beloeil is in the low band with 92% of Canada’s 2,610 towns; 7.5% sit in moderate or 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.
Gouvernement du Québec has mapped flooding for Saint-Mathieu-de-Beloeil (1 study)
What Canada’s Flood Map Inventory lists for Saint-Mathieu-de-Beloeil: who studied flooding and where to see their maps.
Gouvernement du Québec holds the flood mapping that covers Saint-Mathieu-de-Beloeil (1979), linked below.
| Study | By | Year | Status |
|---|---|---|---|
| Sorel-Chambly | Gouvernement du Québec | 1979 | final |
Towns with a flood study on file
Its flood study sets Saint-Mathieu-de-Beloeil apart in Quebec, where 45% of towns have one (Canada: 58%).
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Listed, not scored: a flood study proves a map exists, not that Saint-Mathieu-de-Beloeil floods.
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.
Shaking is Saint-Mathieu-de-Beloeil’s costliest hazard: $0.15 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Saint-Mathieu-de-Beloeil’s $0.15 is about 5.1 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
Shaking damage around Saint-Mathieu-de-Beloeil runs at $0.15 a year, near the $0.14 of the typical town in Quebec; La Pocatière has $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.
15% of Canada’s 2,611 towns expect more shaking damage than Saint-Mathieu-de-Beloeil, which places it in the upper third.
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).
Roads, pipes and bridges aren’t in Saint-Mathieu-de-Beloeil’s figure, nor landslides or tsunami: it is buildings and shaking.
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 Saint-Mathieu-de-Beloeil: 8.2% over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
8.2% of tested homes around Saint-Mathieu-de-Beloeil were over the guideline, much like the typical Canadian town at 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Saint-Mathieu-de-Beloeil’s area, at 8.2%, is close to the median in Quebec (8.2%).
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
37% of Canada’s 2,611 towns share Saint-Mathieu-de-Beloeil’s band of 5 to 10%; 26% sit 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.
The share describes the area, not a house: in Saint-Mathieu-de-Beloeil as anywhere, test to be sure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Radon tests: the Monteregie health region
Weather and fire alerts for Saint-Mathieu-de-Beloeil
Alerts for Saint-Mathieu-de-Beloeil 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 Saint-Mathieu-de-Beloeil 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 Saint-Mathieu-de-Beloeil
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Saint-Mathieu-de-Beloeil | Low | $0.15 | 8.2% | Yes |
| Beloeil 25,240 · 3.7 km | Low | $0.20 | 8.2% | Yes |
| McMasterville 6,114 · 5.3 km | Low | $0.18 | 8.2% | Yes |
| Mont-Saint-Hilaire 19,447 · 5.8 km | Low | $0.12 | 8.2% | Yes |
| Saint-Amable 14,119 · 6.6 km | Low | $0.19 | 8.2% | None listed |
| Saint-Charles-sur-Richelieu 1,867 · 6.9 km | Low | $0.16 | 8.2% | Yes |
| Sainte-Julie 30,981 · 6.9 km | Low | $0.19 | 8.2% | None listed |
None of the places around has more fire nearby than Saint-Mathieu-de-Beloeil (low); Beloeil comes closest (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Saint-Mathieu-de-Beloeil faces
Practical steps for Saint-Mathieu-de-Beloeil’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?
- 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
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Saint-Mathieu-de-Beloeil takes its 2007 health region’s share.
- Wildfire counts one way. The wildfire figure is the share of land within 25 km of Saint-Mathieu-de-Beloeil’s homes burned each year from 1986 to 2025, past fire rather than a forecast, and it can only lower Risk.
- Earthquakes are modelled. Shaking damage is modelled from the ground, the buildings and the odds of each quake, and published for whole subdivisions such as Saint-Mathieu-de-Beloeil’s.
- 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 Saint-Mathieu-de-Beloeil.
Questions about flooding and hazards in Saint-Mathieu-de-Beloeil
Does Saint-Mathieu-de-Beloeil flood?
The inventory lists a study touching Saint-Mathieu-de-Beloeil; whether a given street floods is on that map, not in the grade.
How is Saint-Mathieu-de-Beloeil’s Hazard risk Grade worked out?
Hazard risk gives Saint-Mathieu-de-Beloeil C, weighing earthquakes and radon and counting wildfire only against it.
Is Saint-Mathieu-de-Beloeil at risk of wildfire?
Not much by Canadian standards: Saint-Mathieu-de-Beloeil’s band is low, with 0.1% of the land within 25 km burned since 1986 (last in 2024), so wildfire doesn’t change its grade.
How big is the earthquake risk in Saint-Mathieu-de-Beloeil?
NRCan’s model expects shaking to cost buildings in Saint-Mathieu-de-Beloeil $0.15 a year for every $1,000 of their value, on average over many years.
Is radon a problem in Saint-Mathieu-de-Beloeil?
8.2% of the 110 homes Health Canada tested around Saint-Mathieu-de-Beloeil topped the guideline; your own house needs its own test.
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).