Photo: Gabriel Picard · CC BY-SA 4.0Jésuites’ hazards at a glance: a low wildfire record and 8.8% of area homes over the radon guideline
Fire has left almost no mark near Jésuites: 0% of the land within 25 km since 1986, 0.000% a year. Seismic risk runs high: $0.14 of expected damage per $1,000 of buildings a year, the typical town $0.030. Hazard risk gives Jésuites a grade of C−, from earthquakes and radon alone.
What stands out about Jésuites’s hazards
Four national sources, each read for Jésuites: earthquakes, radon, past fires and flood studies.
What Jésuites faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Jésuites: C−
For Jésuites, Risk will be the average of earthquakes and radon, with wildfire added only if it makes the average worse.
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. Small fires and grass fires are largely missing from the national burned-area record.
Wildfire is rare near Jésuites: 0% of the land within 25 km burned since 1986, 0% within 5 km
Fires mapped since 1986 around where Jésuites’ residents live, and the fuel next to their homes.
Forty years of fire maps put Jésuites at 0.000% a year, low next to the typical Canadian town’s 0.000%.
No fire has burned within 5 km of Jésuites’ homes since 1986; the nearest burn is 12 km away.
24% of the land within 25 km of Jésuites is forest fuel, yet only 2.7% within 5 km of its homes.
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
Mistissini has the highest burn rate in Quebec, 0.31% a year; around Jésuites, as around 144 of the 513 towns, it rounds to zero.
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.
Most of the country’s 2,610 towns are low-band (92%, against 7.5% above); around Jésuites, burning rounds to zero.
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 Jésuites
Flood studies whose area touches Jésuites, from NRCan’s inventory, each linked to its owner.
No flood study on the national inventory covers Jésuites; ask the municipality, which is the authority for its flood maps.
Towns with a flood study on file
Mapping in Quebec reaches 45% of towns, below the 58% across Canada, and not Jésuites.
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 Jésuites’ 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 Jésuites: $0.14 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.
Jésuites’ $0.14 is about 4.6 times the typical town’s $0.030: it sits in one of Canada’s more active seismic zones.
For earthquake risk, the only official count covers all of the city of Québec, Jésuites included.
Shaking damage a year per $1,000 of building value
Neither high nor low in Quebec: Jésuites’ $0.14 sits by the median of $0.14, while 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.
In the upper part of Canada’s range: 20% of its 2,611 towns expect more damage than Jésuites.
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 Jésuites’ 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).
Some radon around Jésuites: 8.8% of area homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
The survey area of Jésuites reads 8.8%, a shade from the typical Canadian town’s 6.6%. Jésuites shares its radon tests numbers with the rest of the Capitale-Nationale health region.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
2.5% of tests around Jésuites passed 600 Bq/m³; over 200, its 8.8% matches 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.
Radon tops the guideline in a modest share of homes around Jésuites, a band holding 37% of Canada’s 2,611 towns; 26% rank above.
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 Jésuites as anywhere, test to be sure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Jésuites
Environment and Climate Change Canada issues the weather alerts for Jésuites; 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 Jésuites come through Environment Canada and Alert Ready; the fire map is CWFIS’s.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Jésuites’ neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Jésuites | Low | $0.14 | 8.8% | None listed |
| Charlesbourg 9,660 · 1.5 km | Low | $0.14 | 8.8% | None listed |
| Saint-Rodrigue 12,018 · 1.6 km | Low | $0.14 | 8.8% | None listed |
| Bourg-Royal 14,430 · 2.4 km | Low | $0.14 | 8.8% | None listed |
| Lairet 15,251 · 2.7 km | Low | $0.14 | 8.8% | None listed |
| Vieux-Moulin 15,935 · 2.9 km | Low | $0.14 | 8.8% | None listed |
| Maizerets 14,571 · 3.1 km | Low | $0.14 | 8.8% | None listed |
The fire record around Bourg-Royal is a touch heavier than Jésuites’, but the band is the same: low (here low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Jésuites faces
Practical steps for Jésuites’ 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. Flood studies cover areas of every size, which is why the page lists them for Jésuites without grading them.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Jésuites’ figure is its subdivision’s.
- 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 Jésuites until then.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Jésuites’ homes since 1986, a history of fire that may lower Risk but never raises it.
Questions about flooding and hazards in Jésuites
How is Jésuites’s Hazard risk Grade worked out?
Hazard risk gives Jésuites C−, weighing earthquakes and radon and counting wildfire only against it.
Is Jésuites at risk of wildfire?
Not much by Canadian standards: Jésuites’ band is low, with 0% of the land within 25 km burned since 1986 (last in 2022), so wildfire doesn’t change its grade.
Is radon a problem in Jésuites?
8.8% of the 160 homes Health Canada tested around Jésuites topped the guideline; your own house needs its own test.
Does Jésuites flood?
No study on Canada’s Flood Map Inventory covers Jésuites (0), which doesn’t mean it has never been mapped, so ask the municipality.
How big is the earthquake risk in Jésuites?
About $0.14 a year per $1,000 of building value, NRCan’s long-run expectation for Jésuites.
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).