Photo: Claude Robillard · CC BY 2.0On hazards, Saint-Alexandre-de-Kamouraska comes out behind 94% of Canadian towns
Little of the land around Saint-Alexandre-de-Kamouraska has burned: 0.2% within 25 km since 1986, or 0.005% a year. Earthquakes add more: NRCan’s model puts building losses at $0.37 a year per $1,000 of value, against $0.030 for the typical town. In Health Canada’s survey, 14% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Hazard risk gives Saint-Alexandre-de-Kamouraska a grade of D, from earthquakes and radon alone.
What stands out about Saint-Alexandre-de-Kamouraska’s hazards
For Saint-Alexandre-de-Kamouraska, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Saint-Alexandre-de-Kamouraska faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Saint-Alexandre-de-Kamouraska grades D for hazard risk
Seismic risk and radon set Saint-Alexandre-de-Kamouraska’s grade, wildfire can drag it down, and flood mapping stays out of it.
Its place: #505 of 507 in Quebec and #2,532 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.
Wildfire is rare near Saint-Alexandre-de-Kamouraska: 0.2% of the land within 25 km burned since 1986, 0% within 5 km
Past fire around Saint-Alexandre-de-Kamouraska’s homes, from the national burned-area record, with the fuel within 5 km.
With 0.005% burned a year, Saint-Alexandre-de-Kamouraska is among the many low-band places (the typical Canadian town 0.000%).
No fire has burned within 5 km of Saint-Alexandre-de-Kamouraska’s homes since 1986; the nearest burn is 16 km away.
Forest thickens with distance from Saint-Alexandre-de-Kamouraska: 37% of the land within 5 km, 61% 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
Mistissini burns fastest in Quebec at 0.31% a year; Saint-Alexandre-de-Kamouraska, at 0.005%, ranks 28th of 513.
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.
Low, like 92% of the country’s 2,610 towns: the land around Saint-Alexandre-de-Kamouraska burns, but slower than in the 7.5% above it.
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-Alexandre-de-Kamouraska is on the flood map inventory: 1 study, by Gouvernement du Québec
What Canada’s Flood Map Inventory lists for Saint-Alexandre-de-Kamouraska: who studied flooding and where to see their maps.
Gouvernement du Québec holds the flood mapping that covers Saint-Alexandre-de-Kamouraska (2005), linked below.
| Study | By | Year | Status |
|---|---|---|---|
| St-Antonin | Gouvernement du Québec | 2005 | final |
Towns with a flood study on file
Mapping in Quebec reaches 45% of towns, Saint-Alexandre-de-Kamouraska among them, below the 58% across Canada.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Flood mapping is shown for Saint-Alexandre-de-Kamouraska to be opened and checked, never turned into a grade.
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 Saint-Alexandre-de-Kamouraska $0.37 per $1,000 a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Roughly 12.4 times the typical $0.030: Saint-Alexandre-de-Kamouraska’s $0.37 marks real seismic exposure.
Shaking damage a year per $1,000 of building value
Saint-Alexandre-de-Kamouraska’s $0.37 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.
Only 4.7% of Canada’s 2,611 towns expect more shaking damage than Saint-Alexandre-de-Kamouraska.
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).
For Saint-Alexandre-de-Kamouraska the model prices shaking damage to buildings, nothing more.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Test for radon in Saint-Alexandre-de-Kamouraska: 14% of area homes were over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
More homes than usual test high around Saint-Alexandre-de-Kamouraska: 14% against 6.6% for the typical Canadian town. Saint-Alexandre-de-Kamouraska doesn’t get its own radon tests figures; the ones here come from the Bas-Saint-Laurent health region.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Around Saint-Alexandre-de-Kamouraska, 14% of tests were over 200 Bq/m³ and 1.8% over 600, against a median of 8.2% in Quebec.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Saint-Alexandre-de-Kamouraska is in the 10–20% band, with 22% of Canada’s 2,611 towns; only 4.6% are 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 low area share in Saint-Alexandre-de-Kamouraska doesn’t clear a house, nor does a high one condemn it: test.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Saint-Alexandre-de-Kamouraska
Alerts for Saint-Alexandre-de-Kamouraska 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. |
Alert Ready carries evacuation orders for Saint-Alexandre-de-Kamouraska to phones; CWFIS shows the day’s fire danger.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Saint-Alexandre-de-Kamouraska’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-Alexandre-de-Kamouraska | Low | $0.37 | 14% | Yes |
| Notre-Dame-du-Portage 1,341 · 8.5 km | Low | $0.27 | 14% | None listed |
| Saint-Antonin 4,633 · 14 km | Low | $0.24 | 14% | Yes |
| Rivière-du-Loup 20,650 · 18 km | Low | $0.28 | 14% | None listed |
Nowhere around Saint-Alexandre-de-Kamouraska burns more: Notre-Dame-du-Portage, the closest rival, is low to its low.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Saint-Alexandre-de-Kamouraska faces
Practical steps for Saint-Alexandre-de-Kamouraska’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. Radon figures pool the survey’s home tests by area: postal areas once their boundaries arrive, the 2007 health region around Saint-Alexandre-de-Kamouraska until then.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Saint-Alexandre-de-Kamouraska’s census subdivision (a neighbourhood shows its city’s).
- Wildfire counts one way. For Saint-Alexandre-de-Kamouraska, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Saint-Alexandre-de-Kamouraska without grading them.
Questions about flooding and hazards in Saint-Alexandre-de-Kamouraska
Is Saint-Alexandre-de-Kamouraska at risk of wildfire?
Some, but Saint-Alexandre-de-Kamouraska’s low band (0.2% of nearby land burned since 1986, latest 2024) is short of the level that counts.
How big is the earthquake risk in Saint-Alexandre-de-Kamouraska?
In NRCan’s seismic model, Saint-Alexandre-de-Kamouraska’s buildings lose $0.37 per $1,000 of value in an average year.
Is radon a problem in Saint-Alexandre-de-Kamouraska?
The area’s survey found 14% of 171 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Saint-Alexandre-de-Kamouraska.
Does Saint-Alexandre-de-Kamouraska flood?
A flood study covers Saint-Alexandre-de-Kamouraska on Canada’s Flood Map Inventory; open the owner’s map to check a street, since flood isn’t graded.
How is Saint-Alexandre-de-Kamouraska’s Hazard risk Grade worked out?
Hazard risk gives Saint-Alexandre-de-Kamouraska D, weighing earthquakes and radon and counting wildfire only against it.
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).