Photo: Harfang · CC BY-SA 3.0Saint-Basile is on Canada’s flood inventory: 1 listed, led by Gouvernement du Québec
Little of the land around Saint-Basile has burned: 0% within 25 km since 1986, or 0.001% a year. Seismic risk runs high: $0.13 of expected damage per $1,000 of buildings a year, the typical town $0.030. Radon is about average around Saint-Basile: 8.8% of tested homes in the survey area topped the guideline, against 6.6% for the typical town. Saint-Basile grades C for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Saint-Basile’s hazards
For Saint-Basile, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Saint-Basile faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Saint-Basile grades C for hazard risk
Two inputs always count for Saint-Basile, earthquakes and radon; the third, wildfire, counts only against a town.
Its place: #280 of 507 in Quebec and #2,233 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.
Few fires near Saint-Basile: 0% within 5 km, 0% within 25 km
Fires mapped since 1986 around where Saint-Basile’s residents live, and the fuel next to their homes.
Around Saint-Basile fire takes 0.001% of the land in a typical year, the typical Canadian town 0.000%, which is low.
36% of the land within 5 km of Saint-Basile is forest fuel, close to the 33% 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
At 0.001% a year, Saint-Basile ranks 136th of the 513 towns in Quebec; Mistissini leads 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.
The low band takes in 92% of Canada’s 2,610 towns, Saint-Basile among them, though its rate is above zero; 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-Basile is on the flood map inventory: 1 study, by Gouvernement du Québec
Flood studies whose area touches Saint-Basile, from NRCan’s inventory, each linked to its owner.
Gouvernement du Québec studied flooding in an area that includes Saint-Basile (2005); open its map to see which streets lie in a flood zone.
| Study | By | Year | Status |
|---|---|---|---|
| St-Basile | Gouvernement du Québec | 2005 | final |
Towns with a flood study on file
Its flood study sets Saint-Basile 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.
Flood mapping is shown for Saint-Basile 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.
Shaking is Saint-Basile’s costliest hazard: $0.13 a year per $1,000
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
The typical town loses $0.030 a year to shaking; Saint-Basile loses $0.13, 4.3 times as much.
Shaking damage a year per $1,000 of building value
Shaking damage around Saint-Basile runs at $0.13 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.
In the upper part of Canada’s range: 22% of its 2,611 towns expect more damage than Saint-Basile.
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-Basile 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).
Some radon around Saint-Basile: 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. · Measured across the Capitale-Nationale health region: radon tests
The survey area of Saint-Basile reads 8.8%, a shade from the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
2.5% of tests around Saint-Basile 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.
Saint-Basile is in the 5–10% band with 37% of Canada’s 2,611 towns; 26% have more.
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-Basile 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-Basile
Alerts for Saint-Basile 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-Basile 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-Basile
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Saint-Basile | Low | $0.13 | 8.8% | Yes |
| Portneuf 3,410 · 7.2 km | Low | $0.11 | 8.8% | None listed |
| Cap-Santé 3,885 · 8.1 km | Low | $0.12 | 8.8% | None listed |
| Pont-Rouge 11,339 · 9.8 km | Low | $0.15 | 8.8% | None listed |
| Donnacona 7,785 · 12 km | Low | $0.11 | 8.8% | None listed |
| Saint-Raymond 11,951 · 15 km | Low | $0.092 | 8.8% | Yes |
| Deschambault-Grondines 2,251 · 17 km | Low | $0.12 | 8.8% | None listed |
The neighbour with the most fire is Portneuf (low), still no more than Saint-Basile (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Saint-Basile faces
What to do about the hazards Saint-Basile faces, and what to ask before you buy.
- 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-Basile 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-Basile’s census subdivision (a neighbourhood shows its city’s).
- Wildfire counts one way. For Saint-Basile, 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-Basile without grading them.
Questions about flooding and hazards in Saint-Basile
Does Saint-Basile flood?
A flood study covers Saint-Basile on Canada’s Flood Map Inventory; open the owner’s map to check a street, since flood isn’t graded.
Is radon a problem in Saint-Basile?
Around Saint-Basile, 160 survey homes were tested and 8.8% came in over 200 Bq/m³, a guide to the area, not to any one home.
Is Saint-Basile at risk of wildfire?
Fire has reached 0% of the land around Saint-Basile since 1986 (last in 2003); at low, it neither helps nor hurts the grade.
How big is the earthquake risk in Saint-Basile?
About $0.13 a year per $1,000 of building value, NRCan’s long-run expectation for Saint-Basile.
How is Saint-Basile’s Hazard risk Grade worked out?
Hazard risk gives Saint-Basile C, 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).