Photo: Mario Hains · CC BY-SA 3.0A flood study covers Saint-Côme--Linière: 1 on the national inventory, the newest from Gouvernement du Québec
Wildfire barely registers for Saint-Côme--Linière, at 0% of the land within 25 km since 1986 (0.000% a year). For earthquakes Saint-Côme--Linière is middling, $0.050 a year per $1,000 against $0.030 for the typical town. In Health Canada’s survey, 13% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Hazard risk gives Saint-Côme--Linière a grade of C−, from earthquakes and radon alone.
What stands out about Saint-Côme--Linière’s hazards
For Saint-Côme--Linière, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Saint-Côme--Linière 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-Côme--Linière: C−
Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Saint-Côme--Linière with little fire nearby would get no credit for it.
Its place: #348 of 507 in Quebec and #2,316 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-Côme--Linière: 0% of the land within 25 km burned since 1986, 0% within 5 km
Fires mapped since 1986 around where Saint-Côme--Linière’s residents live, and the fuel next to their homes.
Next to the typical Canadian town (0.000% a year), Saint-Côme--Linière’s 0.000% is in the low band.
Forest crowds in on Saint-Côme--Linière: 72% of the land within 5 km is forest fuel, more than the 63% 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
Of the 513 towns in Quebec, 144 have a burn rate that rounds to zero, Saint-Côme--Linière among them; Mistissini leads at 0.31% a year.
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.
92% of Canada’s 2,610 towns are in the low band and 7.5% above it; Saint-Côme--Linière is among the many where the yearly burn rate rounds to zero.
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.
Gouvernement du Québec has mapped flooding for Saint-Côme--Linière (1 study)
Flood studies whose area touches Saint-Côme--Linière, from NRCan’s inventory, each linked to its owner.
The flood study touching Saint-Côme--Linière is Gouvernement du Québec’s, dated 1990; its own map shows the zones street by street.
| Study | By | Year | Status |
|---|---|---|---|
| St-Côme | Gouvernement du Québec | 1990 | final |
Towns with a flood study on file
Flood maps are thinner in Quebec, 45% of towns against 58% nationally, but Saint-Côme--Linière has one.
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-Côme--Linière’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-Côme--Linière: $0.050 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.
With $0.050 of shaking damage a year per $1,000, Saint-Côme--Linière is about even with the typical $0.030 (1.7 times).
Shaking damage a year per $1,000 of building value
The typical town in Quebec expects $0.14 a year in shaking damage; Saint-Côme--Linière expects less, $0.050, 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.
31% of Canada’s 2,611 towns expect more shaking damage than Saint-Côme--Linière, which places it in the upper third.
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-Côme--Linière.
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-Côme--Linière: 13% of area homes were over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Saint-Côme--Linière’s survey area reads 13% over the guideline, well past the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Saint-Côme--Linière’s area, at 13%, is above the median in Quebec (8.2%), and 0.6% of its tests passed 600 Bq/m³.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
One test in ten or more tops the guideline around Saint-Côme--Linière, as in 22% of Canada’s 2,611 towns; 4.6% go 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.
Health Canada advises testing every home, Saint-Côme--Linière’s included, whatever the area’s figure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Data for radon tests covers the Chaudiere-Appalaches health region
Where to get warnings in Saint-Côme--Linière
Environment and Climate Change Canada issues the weather alerts for Saint-Côme--Linière; 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 Saint-Côme--Linière come through Environment Canada and Alert Ready; the fire map is CWFIS’s.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Saint-Côme--Linière’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Saint-Côme--Linière | Low | $0.050 | 13% | Yes |
| Saint-René 1,035 · 7.9 km | Low | $0.053 | 13% | None listed |
| Saint-Zacharie 1,674 · 12 km | Low | $0.051 | 13% | None listed |
| Saint-Georges 33,881 · 13 km | Low | $0.048 | 13% | None listed |
| Saint-Martin 2,687 · 15 km | Low | $0.044 | 13% | None listed |
| Saint-Prosper 4,042 · 17 km | Low | $0.054 | 13% | None listed |
Nowhere around Saint-Côme--Linière burns more: Saint-René, 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-Côme--Linière faces
What to do about the hazards Saint-Côme--Linière 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
- 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 Saint-Côme--Linière floods.
- 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 Saint-Côme--Linière sits in.
- Wildfire counts one way. For Saint-Côme--Linière, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Saint-Côme--Linière’s census subdivision (a neighbourhood shows its city’s).
Questions about flooding and hazards in Saint-Côme--Linière
How is Saint-Côme--Linière’s Hazard risk Grade worked out?
Saint-Côme--Linière’s Hazard risk grade is C−, built on earthquakes and radon with a one-sided wildfire input.
How big is the earthquake risk in Saint-Côme--Linière?
About $0.050 a year per $1,000 of building value, NRCan’s long-run expectation for Saint-Côme--Linière.
Is radon a problem in Saint-Côme--Linière?
In Health Canada’s survey, 13% of 175 homes tested in Saint-Côme--Linière’s area were above 200 Bq/m³, though only a test tells you about one house.
Does Saint-Côme--Linière flood?
Saint-Côme--Linière’s area has been studied for flooding, and the owner’s map shows which streets lie in a zone; the grade leaves flood out.
Is Saint-Côme--Linière at risk of wildfire?
Very little by the national record: Saint-Côme--Linière’s band is low, with 0% of the land within 25 km burned since 1986, 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).