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Photo: Unknown Unknown · Public domainMaisonneuve’s hazards at a glance: a low wildfire record and 6.8% of area homes over the radon guideline
Burn scars are few around Maisonneuve, with 0.1% of the land within 25 km touched by fire since 1986 (0.002% a year). Shaking is a bigger worry than in most places, at $0.20 a year per $1,000 of building value ($0.030 typical). Maisonneuve grades C for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Maisonneuve’s hazards
Four national sources, each read for Maisonneuve: earthquakes, radon, past fires and flood studies.
What Maisonneuve faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Maisonneuve: C
Seismic risk and radon set Maisonneuve’s grade, wildfire can drag it down, and flood mapping stays out of it.
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. Small fires and grass fires are largely missing from the national burned-area record.
Wildfire is rare near Maisonneuve: 0.1% of the land within 25 km burned since 1986, 0% within 5 km
Past fire around Maisonneuve’s homes, from the national burned-area record, with the fuel within 5 km.
Next to the typical Canadian town (0.000% a year), Maisonneuve’s 0.002% is in the low band.
Maisonneuve’s homes have had no fire within 5 km since 1986; the closest was 17 km away.
Only 1.1% of the land within 25 km of Maisonneuve is forest fuel, and 0.2% close in.
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
The land around Maisonneuve burns at 0.002% a year, the 35th highest rate of 513 towns in Quebec; Mistissini tops it 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.
Maisonneuve 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.
The flood map inventory lists nothing for Maisonneuve
What Canada’s Flood Map Inventory lists for Maisonneuve: who studied flooding and where to see their maps.
Canada’s Flood Map Inventory lists no study whose area touches Maisonneuve, which doesn’t mean it has never been mapped.
Towns with a flood study on file
Mapping in Quebec reaches 45% of towns, below the 58% across Canada, and not Maisonneuve.
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 Maisonneuve’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 Maisonneuve: $0.20 per $1,000 of buildings a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Roughly 6.7 times the typical $0.030: Maisonneuve’s $0.20 marks real seismic exposure.
Shaking damage a year per $1,000 of building value
The typical town in Quebec expects $0.14 a year; Maisonneuve expects $0.20, and La Pocatière $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.
Maisonneuve is in the top tenth of Canada’s 2,611 towns for earthquake risk; 8.5% 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).
The loss is to Maisonneuve’s buildings alone, from ground shaking; infrastructure and secondary hazards are left out.
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
Some radon around Maisonneuve: 6.8% of area homes over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline. · Area-wide: radon tests, counted over the Montreal health region
At 6.8% over the guideline, the area around Maisonneuve is about level with the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Maisonneuve’s area, at 6.8%, 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 Maisonneuve’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.
A survey sample isn’t a map: any home in Maisonneuve can be high, and a three-month test is the only way to know.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Maisonneuve
Environment and Climate Change Canada issues the weather alerts for Maisonneuve; 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. |
Smoke and fire warnings for Maisonneuve come through Environment Canada and Alert Ready; the fire map is CWFIS’s.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Maisonneuve
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Maisonneuve | Low | $0.20 | 6.8% | None listed |
| Hochelaga 11,355 · 1.3 km | Low | $0.20 | 6.8% | None listed |
| Préfontaine 16,542 · 1.4 km | Low | $0.20 | 6.8% | None listed |
| Guybourg 3,554 · 2.0 km | Low | $0.20 | 6.8% | None listed |
| Petite-Côte 17,196 · 2.1 km | Low | $0.20 | 6.8% | None listed |
| Longue-Pointe 20,337 · 2.6 km | Low | $0.20 | 6.8% | None listed |
| Marie-Victorin 28,904 · 2.9 km | Low | $0.20 | 6.8% | None listed |
Maisonneuve’s low band tops its neighbours; Hochelaga is next (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Maisonneuve faces
Practical steps for Maisonneuve’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
- 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 Maisonneuve floods.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Maisonneuve’s figure is its subdivision’s.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Maisonneuve’s homes since 1986, a history of fire that may lower Risk but never raises it.
- 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 Maisonneuve sits in.
Questions about flooding and hazards in Maisonneuve
Is radon a problem in Maisonneuve?
The area’s survey found 6.8% of 74 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Maisonneuve.
Does Maisonneuve flood?
The inventory has 0 studies for Maisonneuve, and an empty list isn’t a clean bill: the municipality holds any flood maps.
How is Maisonneuve’s Hazard risk Grade worked out?
Maisonneuve’s Hazard risk grade is C, built on earthquakes and radon with a one-sided wildfire input.
Is Maisonneuve at risk of wildfire?
Some, but Maisonneuve’s low band (0.1% of nearby land burned since 1986, latest 2024) is short of the level that counts.
How big is the earthquake risk in Maisonneuve?
In NRCan’s seismic model, Maisonneuve’s buildings lose $0.20 per $1,000 of value in an average year.
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).