Photo: Raymixx · CC BY 3.0Saint-Jacques-le-Mineur is on Canada’s flood inventory: 1 listed, led by municipalité de Saint-Philippe
The burned-area map is nearly blank around Saint-Jacques-le-Mineur, 0% within 25 km since 1986, 0.001% a year. Shaking is a bigger worry than in most places, at $0.19 a year per $1,000 of building value ($0.030 typical). In Health Canada’s survey, 8.2% of homes tested in Saint-Jacques-le-Mineur’s area exceeded 200 Bq/m³, close to the typical 6.6%. Hazard risk gives Saint-Jacques-le-Mineur a grade of C−, from earthquakes and radon alone.
What stands out about Saint-Jacques-le-Mineur’s hazards
For Saint-Jacques-le-Mineur, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Saint-Jacques-le-Mineur faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Saint-Jacques-le-Mineur: C−
Earthquake risk and radon make Saint-Jacques-le-Mineur’s grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Little of the land around Saint-Jacques-le-Mineur has burned: 0% within 5 km, 0% within 25 km since 1986
Past fire around Saint-Jacques-le-Mineur’s homes, from the national burned-area record, with the fuel within 5 km.
The land within 25 km of Saint-Jacques-le-Mineur burns at 0.001% a year on average, the low band; the typical Canadian town: 0.000%.
The 5 km ring around Saint-Jacques-le-Mineur’s homes is clear of burns since 1986, the nearest 13 km out.
Forest fuel is scarce around Saint-Jacques-le-Mineur: 0% of the land within 5 km, 2.2% 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 514
Saint-Jacques-le-Mineur sits mid-table in Quebec: 136th of 514 towns, at 0.001% a year, well behind Mistissini (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.
Some fire is mapped around Saint-Jacques-le-Mineur, but not enough to leave the low band, where 92% of Canada’s 2,610 towns are; 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.
Saint-Jacques-le-Mineur is on the flood map inventory: 1 study, by municipalité de Saint-Philippe
What Canada’s Flood Map Inventory lists for Saint-Jacques-le-Mineur: who studied flooding and where to see their maps.
For Saint-Jacques-le-Mineur the inventory points to municipalité de Saint-Philippe’s 2012 study, whose map is the one to check.
| Study | By | Year | Status |
|---|---|---|---|
| St-Philippe | municipalité de Saint-Philippe | 2012 | final |
Towns with a flood study on file
Flood maps are thinner in Quebec, 45% of towns against 58% nationally, but Saint-Jacques-le-Mineur has one.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Flood studies don’t enter the grade; they are listed so you can open the official map for Saint-Jacques-le-Mineur.
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.
High seismic risk in Saint-Jacques-le-Mineur: $0.19 per $1,000 of buildings a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Roughly 6.3 times the typical $0.030: Saint-Jacques-le-Mineur’s $0.19 marks real seismic exposure.
Shaking damage a year per $1,000 of building value
Saint-Jacques-le-Mineur’s $0.19 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.
More earthquake risk than most: only 13% of Canada’s 2,611 towns are above Saint-Jacques-le-Mineur.
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 Saint-Jacques-le-Mineur 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).
Some radon around Saint-Jacques-le-Mineur: 8.2% of area homes over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
The survey area of Saint-Jacques-le-Mineur reads 8.2%, a shade from the typical Canadian town’s 6.6%. Saint-Jacques-le-Mineur shares its radon tests numbers with the rest of the Monteregie health region.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Around Saint-Jacques-le-Mineur, 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.
Radon tops the guideline in a modest share of homes around Saint-Jacques-le-Mineur, 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.
Radon varies from house to house in Saint-Jacques-le-Mineur, 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 Saint-Jacques-le-Mineur
Alerts for Saint-Jacques-le-Mineur 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. |
Evacuation orders for Saint-Jacques-le-Mineur come from the municipality or the province, while CWFIS maps fire danger every day.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Saint-Jacques-le-Mineur’s neighbours compare on hazards
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Saint-Jacques-le-Mineur | Low | $0.19 | 8.2% | Yes |
| Napierville 4,187 · 8.4 km | Low | $0.18 | 8.2% | None listed |
| Saint-Édouard 1,438 · 9.3 km | Low | $0.20 | 8.2% | Yes |
| Saint-Mathieu 2,642 · 9.7 km | Low | $0.18 | 8.2% | Yes |
| Saint-Philippe 8,674 · 11 km | Low | $0.18 | 8.2% | Yes |
| Saint-Cyprien-de-Napierville 1,786 · 11 km | Low | $0.15 | 8.2% | None listed |
| Saint-Blaise-sur-Richelieu 2,165 · 12 km | Low | $0.18 | 8.2% | Yes |
Saint-Édouard (low) has the heaviest fire record of Saint-Jacques-le-Mineur’s neighbours, and Saint-Jacques-le-Mineur (low) matches or beats it.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Saint-Jacques-le-Mineur faces
Practical steps for Saint-Jacques-le-Mineur’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. About 14,000 homes were tested across Canada in 2009–2011, and the share over the guideline for Saint-Jacques-le-Mineur is its health region’s, the survey’s design unit.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Saint-Jacques-le-Mineur’s census subdivision (a neighbourhood shows its city’s).
- Flood studies aren’t flood zones. NRCan’s inventory says where flood mapping exists, not where water goes; the map’s owner is the authority for Saint-Jacques-le-Mineur.
- Wildfire counts one way. For Saint-Jacques-le-Mineur, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
Questions about flooding and hazards in Saint-Jacques-le-Mineur
Is radon a problem in Saint-Jacques-le-Mineur?
The area’s survey found 8.2% of 110 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Saint-Jacques-le-Mineur.
How is Saint-Jacques-le-Mineur’s Hazard risk Grade worked out?
Saint-Jacques-le-Mineur grades C− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Does Saint-Jacques-le-Mineur flood?
There is flood mapping for Saint-Jacques-le-Mineur on the national inventory, each study linked to its owner’s map, none of them graded.
How big is the earthquake risk in Saint-Jacques-le-Mineur?
In NRCan’s seismic model, Saint-Jacques-le-Mineur’s buildings lose $0.19 per $1,000 of value in an average year.
Is Saint-Jacques-le-Mineur at risk of wildfire?
Some, but Saint-Jacques-le-Mineur’s low band (0% of nearby land burned since 1986, latest 2024) is short of the level that counts.
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).