Photo: Cantons-de-l'Est · CC BY-SA 4.0A flood study covers Saint-Léon-de-Standon: 1 on the national inventory, the newest from Gouvernement du Québec
Wildfire barely registers for Saint-Léon-de-Standon, at 0% of the land within 25 km since 1986 (0.000% a year). Shaking is about as much of a worry in Saint-Léon-de-Standon as in most places, at $0.056 a year per $1,000 of building value ($0.030 typical). In Health Canada’s survey, 13% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Hazard risk gives Saint-Léon-de-Standon a grade of C−, from earthquakes and radon alone.
What stands out about Saint-Léon-de-Standon’s hazards
For Saint-Léon-de-Standon, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Saint-Léon-de-Standon faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Saint-Léon-de-Standon grades C− for hazard risk
Two inputs always count for Saint-Léon-de-Standon, earthquakes and radon; the third, wildfire, counts only against a town.
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-Léon-de-Standon: 0% within 5 km, 0% within 25 km
Fires mapped since 1986 around where Saint-Léon-de-Standon’s residents live, and the fuel next to their homes.
The land within 25 km of Saint-Léon-de-Standon burns at 0.000% a year on average, the low band; the typical Canadian town: 0.000%.
Nothing inside 5 km of Saint-Léon-de-Standon’s homes has burned since 1986, and the nearest scar is 15 km off.
66% of the land within 5 km of Saint-Léon-de-Standon is forest fuel, close to the 65% 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
Little or nothing burns around Saint-Léon-de-Standon in a typical year; 145 of the 514 towns in Quebec share that, and 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.
Like most of Canada’s 2,610 towns (92%), Saint-Léon-de-Standon is in the low band, with a burn rate of zero to three decimals; 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-Léon-de-Standon is on the flood map inventory: 1 study, by Gouvernement du Québec
Flood studies whose area touches Saint-Léon-de-Standon, from NRCan’s inventory, each linked to its owner.
A 1992 study by Gouvernement du Québec covers Saint-Léon-de-Standon, and its map, not the inventory, shows the zones.
| Study | By | Year | Status |
|---|---|---|---|
| St-Léon-de-Standon | Gouvernement du Québec | 1992 | final |
Towns with a flood study on file
Its flood study sets Saint-Léon-de-Standon 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.
The grade leaves flood out, since a study area says nothing about how many of Saint-Léon-de-Standon’s homes are at risk.
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.
Ordinary seismic risk in Saint-Léon-de-Standon: $0.056 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.
1.9 times the typical $0.030: Saint-Léon-de-Standon’s $0.056 is ordinary.
Shaking damage a year per $1,000 of building value
The typical town in Quebec expects $0.14 a year in shaking damage; Saint-Léon-de-Standon expects less, $0.056, and La Pocatière the most, $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.
Saint-Léon-de-Standon sits above most of Canada’s 2,611 towns on earthquake risk; 30% are 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).
What a quake does after the shaking, fire, landslides, tsunami, falls outside NRCan’s figure for Saint-Léon-de-Standon.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
13% of homes tested around Saint-Léon-de-Standon are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Radon runs above the typical Canadian town (6.6%) in Saint-Léon-de-Standon’s area, at 13%. Saint-Léon-de-Standon shares its radon tests numbers with the rest of the Chaudiere-Appalaches health region.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
More homes top the guideline around Saint-Léon-de-Standon (13%) than in the typical town in Quebec (8.2%); 0.6% went over 600.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
The 10–20% band holds 22% of Canada’s 2,611 towns, Saint-Léon-de-Standon among them; 4.6% 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.
Health Canada advises testing every home, Saint-Léon-de-Standon’s included, whatever the area’s figure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Saint-Léon-de-Standon
Environment and Climate Change Canada issues the weather alerts for Saint-Léon-de-Standon; 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. |
In fire season, check CWFIS for danger and active fires around Saint-Léon-de-Standon, and listen to local authorities for orders.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Saint-Léon-de-Standon’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Saint-Léon-de-Standon | Low | $0.056 | 13% | Yes |
| Saint-Malachie 1,755 · 11 km | Low | $0.055 | 13% | None listed |
| Frampton 1,374 · 13 km | Low | $0.053 | 13% | None listed |
| Lac-Etchemin 4,089 · 13 km | Low | $0.052 | 13% | Yes |
| Saint-Odilon-de-Cranbourne 1,460 · 14 km | Low | $0.062 | 13% | None listed |
| Saints-Anges 1,364 · 17 km | Low | $0.058 | 13% | None listed |
| Saint-Damien-de-Buckland 1,840 · 18 km | Low | $0.071 | 13% | None listed |
Among its neighbours Saint-Léon-de-Standon has the most fire on record (low); Saint-Malachie follows (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Saint-Léon-de-Standon faces
What to do about the hazards Saint-Léon-de-Standon 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.
- Clear needles and wood nearby.
- Keep a grab-and-go bag ready.
- In smoke, stay in; filter air.
- Has it had a radon test?
- Check the address on the flood map.
- Are flood and wildfire insured?
What this data can and can’t tell you
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Saint-Léon-de-Standon’s census subdivision (a neighbourhood shows its city’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 Saint-Léon-de-Standon until then.
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Saint-Léon-de-Standon without grading them.
- Wildfire counts one way. For Saint-Léon-de-Standon, 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-Léon-de-Standon
Is Saint-Léon-de-Standon at risk of wildfire?
Less than most of Canada: 0% of the land within 25 km of Saint-Léon-de-Standon has burned since 1986, the last in 2022, a low band that leaves Risk alone.
Is radon a problem in Saint-Léon-de-Standon?
In Health Canada’s survey, 13% of 175 homes tested in Saint-Léon-de-Standon’s area were above 200 Bq/m³, though only a test tells you about one house.
How is Saint-Léon-de-Standon’s Hazard risk Grade worked out?
Saint-Léon-de-Standon’s Hazard risk grade is C−, built on earthquakes and radon with a one-sided wildfire input.
Does Saint-Léon-de-Standon flood?
A flood study covers Saint-Léon-de-Standon on Canada’s Flood Map Inventory; open the owner’s map to check a street, since flood isn’t graded.
How big is the earthquake risk in Saint-Léon-de-Standon?
Expected earthquake damage in Saint-Léon-de-Standon comes to $0.056 a year for each $1,000 that buildings are worth.
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).