Photo: Michel Craig · CC BY-SA 2.0Stukely-Sud’s hazards at a glance: a low wildfire record and 7.3% of area homes over the radon guideline
Wildfire isn’t Stukely-Sud’s worry: 0% of the land within 25 km burned since 1986 (0.000% a year). Earthquake risk in Stukely-Sud is ordinary: NRCan’s model puts building losses at $0.053 a year per $1,000 of value, close to the typical town’s $0.030. Stukely-Sud grades B− for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Stukely-Sud’s hazards
For Stukely-Sud, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Stukely-Sud faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Stukely-Sud: B−
Earthquake risk and radon make Stukely-Sud’s grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. Only 55 homes were tested in the survey area, so the radon share is rough. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Few fires near Stukely-Sud: 0% within 5 km, 0% within 25 km
Fires mapped since 1986 around where Stukely-Sud’s residents live, and the fuel next to their homes.
Low by Canadian standards: 0.000% of the land a year around Stukely-Sud, 0.000% for the typical Canadian town.
The closest burn since 1986 lies 12 km from Stukely-Sud’s homes, none within 5 km.
Forest fuel is denser close to Stukely-Sud (33% within 5 km) than further out (22% 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
Near-zero burning puts Stukely-Sud with 145 of the 514 towns in Quebec, far below Mistissini 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.
Stukely-Sud shares the low band with 92% of Canada’s 2,610 towns, its burn rate rounding to nothing; 7.5% burn faster.
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 Stukely-Sud
Flood studies whose area touches Stukely-Sud, from NRCan’s inventory, each linked to its owner.
Canada’s Flood Map Inventory lists no study whose area touches Stukely-Sud, which doesn’t mean it has never been mapped.
Towns with a flood study on file
Mapping in Quebec reaches 45% of towns, below the 58% across Canada, and not Stukely-Sud.
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 Stukely-Sud’s 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.”
Ordinary seismic risk in Stukely-Sud: $0.053 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.
At $0.053 per $1,000, Stukely-Sud’s earthquake risk is about the typical Canadian town’s ($0.030; 1.8 times).
Shaking damage a year per $1,000 of building value
The typical town in Quebec expects $0.14 a year in shaking damage; Stukely-Sud expects less, $0.053, 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.
More earthquake risk than most: only 30% of Canada’s 2,611 towns are above Stukely-Sud.
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 Stukely-Sud 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).
Radon about average around Stukely-Sud: 7.3% over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Source area for radon tests: the Estrie health region
Near the middle for radon: Stukely-Sud’s area 7.3%, the typical Canadian town 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon around Stukely-Sud is ordinary for towns in Quebec: 7.3%, beside a median of 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 Stukely-Sud, 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.
Health Canada advises testing every home, Stukely-Sud’s included, whatever the area’s figure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Stukely-Sud
Environment and Climate Change Canada issues the weather alerts for Stukely-Sud; 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 Stukely-Sud come through Environment Canada and Alert Ready; the fire map is CWFIS’s.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Stukely-Sud
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Stukely-Sud | Low | $0.053 | 7.3% | None listed |
| Eastman 2,706 · 9.0 km | Low | $0.040 | 7.3% | Yes |
| Waterloo 5,714 · 10 km | Low | $0.051 | 8.2% | Yes |
| Austin 1,959 · 13 km | Low | $0.042 | 7.3% | None listed |
| Bolton-Est 1,337 · 16 km | Low | $0.036 | 7.3% | None listed |
| Orford 5,698 · 17 km | Low | $0.042 | 7.3% | Yes |
| Lac-Brome 6,307 · 17 km | Low | $0.051 | 8.2% | None listed |
Nowhere around Stukely-Sud burns more: Eastman, 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 Stukely-Sud faces
Practical steps for Stukely-Sud’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.
- Clear needles and wood nearby.
- Keep a grab-and-go bag ready.
- In smoke, stay in; filter air.
- Has it had a radon test?
- Ask the municipality for flood maps.
- Are flood and wildfire insured?
What this data can and can’t tell you
- Radon is a survey. The radon share comes from about 14,000 long-term home tests in 2009–2011, pooled for now by the 2007 health region Stukely-Sud sits in.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Stukely-Sud’s census subdivision (a neighbourhood shows its city’s).
- Flood studies aren’t flood zones. A study’s area can be a whole watershed or province, so being on the inventory says a map exists, not that a home in Stukely-Sud floods.
- Wildfire counts one way. For Stukely-Sud, 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 Stukely-Sud
How is Stukely-Sud’s Hazard risk Grade worked out?
Stukely-Sud grades B− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Does Stukely-Sud flood?
No study on Canada’s Flood Map Inventory covers Stukely-Sud (0), which doesn’t mean it has never been mapped, so ask the municipality.
Is radon a problem in Stukely-Sud?
7.3% of the 55 homes Health Canada tested around Stukely-Sud topped the guideline; your own house needs its own test.
How big is the earthquake risk in Stukely-Sud?
Expected earthquake damage in Stukely-Sud comes to $0.053 a year for each $1,000 that buildings are worth.
Is Stukely-Sud at risk of wildfire?
Not much by Canadian standards: Stukely-Sud’s band is low, with 0% of the land within 25 km burned since 1986 (last in 2016), so wildfire doesn’t change its grade.
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).