Photo: Malimage · CC BY-SA 3.0Saint-Christophe-d'Arthabaska is on Canada’s flood inventory: 1 listed, led by Gouvernement du Québec
Fire has left almost no mark near Saint-Christophe-d'Arthabaska: 0% of the land within 25 km since 1986, 0.001% a year. Seismic risk in Saint-Christophe-d'Arthabaska sits near the middle: $0.054 of expected damage per $1,000 of buildings a year, the typical town $0.030. Fewer homes than usual carry radon here, 0% over the guideline where the typical town has 6.6%. Saint-Christophe-d'Arthabaska grades A− for hazard risk, with wildfire counted against it.
What stands out about Saint-Christophe-d'Arthabaska’s hazards
Four national sources, each read for Saint-Christophe-d'Arthabaska: earthquakes, radon, past fires and flood studies.
What Saint-Christophe-d'Arthabaska faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Saint-Christophe-d'Arthabaska grades A− for hazard risk
For Saint-Christophe-d'Arthabaska, Risk will be the average of earthquakes and radon, with wildfire added only if it makes the average worse.
Its place: #9 of 507 in Quebec and #652 of 2,589 Canadian towns.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. The radon share rests on 58 home tests in the survey area, so a few homes move it. Small fires and grass fires are largely missing from the national burned-area record.
Few fires near Saint-Christophe-d'Arthabaska: 0% within 5 km, 0% within 25 km
Past fire around Saint-Christophe-d'Arthabaska’s homes, from the national burned-area record, with the fuel within 5 km.
The land within 25 km of Saint-Christophe-d'Arthabaska burns at 0.001% a year on average, the low band; the typical Canadian town: 0.000%.
No fire has burned within 5 km of Saint-Christophe-d'Arthabaska’s homes since 1986; the nearest burn is 17 km away.
There is forest near Saint-Christophe-d'Arthabaska’s homes (11% within 5 km) and more of it further out (26% 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-Christophe-d'Arthabaska 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.
Saint-Christophe-d'Arthabaska is in the low band with 92% of Canada’s 2,610 towns; 7.5% sit in moderate or 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.
A flood study covers Saint-Christophe-d'Arthabaska, from Gouvernement du Québec: 1 on the inventory
What Canada’s Flood Map Inventory lists for Saint-Christophe-d'Arthabaska: who studied flooding and where to see their maps.
One study on the inventory touches Saint-Christophe-d'Arthabaska, Gouvernement du Québec’s from 1984, and its area can be large, so it says a map exists, not that the town floods.
| Study | By | Year | Status |
|---|---|---|---|
| Victoriaville-Arthabaska | Gouvernement du Québec | 1984 | final |
Towns with a flood study on file
Mapping in Quebec reaches 45% of towns, Saint-Christophe-d'Arthabaska 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.
The grade leaves flood out, since a study area says nothing about how many of Saint-Christophe-d'Arthabaska’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-Christophe-d'Arthabaska: $0.054 per $1,000 of buildings a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
1.8 times the typical $0.030: Saint-Christophe-d'Arthabaska’s $0.054 is ordinary.
Shaking damage a year per $1,000 of building value
Saint-Christophe-d'Arthabaska’s $0.054 sits under the median in Quebec, $0.14, and well under La Pocatière’s $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-Christophe-d'Arthabaska 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).
The model counts damage to Saint-Christophe-d'Arthabaska’s buildings and their occupants from shaking only: not liquefaction, landslides, tsunami or fires after a quake.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
0% of homes tested around Saint-Christophe-d'Arthabaska are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline. · Measured across the Mauricie et Centre-du-Quebec health region: radon tests
Saint-Christophe-d'Arthabaska’s area, at 0%, is below the 6.6% of the typical Canadian town, though any one home can still be high.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
The median in Quebec is 8.2% over 200 Bq/m³; around Saint-Christophe-d'Arthabaska it is 0%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Under 5% puts Saint-Christophe-d'Arthabaska with 37% of Canada’s 2,611 towns; 63% have more high tests.
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 survey sample isn’t a map: any home in Saint-Christophe-d'Arthabaska can be high, and a three-month test is the only way to know.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Saint-Christophe-d'Arthabaska
Environment and Climate Change Canada issues the weather alerts for Saint-Christophe-d'Arthabaska; 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-Christophe-d'Arthabaska 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-Christophe-d'Arthabaska’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-Christophe-d'Arthabaska | Low | $0.054 | 0% | Yes |
| Victoriaville 49,863 · 4.7 km | Low | $0.11 | 0% | Yes |
| Warwick 4,939 · 9.1 km | Low | $0.066 | 0% | None listed |
| Saint-Albert 1,744 · 12 km | Low | $0.10 | 0% | None listed |
| Saint-Valère 1,187 · 12 km | Low | $0.10 | 0% | Yes |
| Saint-Norbert-d'Arthabaska 1,291 · 12 km | Low | $0.059 | 0% | None listed |
| Tingwick 1,567 · 16 km | Low | $0.047 | 0% | Yes |
None of the places around has more fire nearby than Saint-Christophe-d'Arthabaska (low); Victoriaville comes closest (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Saint-Christophe-d'Arthabaska faces
Practical steps for Saint-Christophe-d'Arthabaska’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?
- Check the address on the flood map.
- Are flood and wildfire insured?
What this data can and can’t tell you
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Saint-Christophe-d'Arthabaska’s figure is its subdivision’s.
- 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-Christophe-d'Arthabaska sits in.
- 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-Christophe-d'Arthabaska floods.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Saint-Christophe-d'Arthabaska’s homes since 1986, a history of fire that may lower Risk but never raises it.
Questions about flooding and hazards in Saint-Christophe-d'Arthabaska
Is Saint-Christophe-d'Arthabaska at risk of wildfire?
Not much by Canadian standards: Saint-Christophe-d'Arthabaska’s band is low, with 0% of the land within 25 km burned since 1986 (last in 2022), so wildfire doesn’t change its grade.
How big is the earthquake risk in Saint-Christophe-d'Arthabaska?
In NRCan’s seismic model, Saint-Christophe-d'Arthabaska’s buildings lose $0.054 per $1,000 of value in an average year.
Does Saint-Christophe-d'Arthabaska flood?
Saint-Christophe-d'Arthabaska’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 radon a problem in Saint-Christophe-d'Arthabaska?
0% of the 58 homes Health Canada tested around Saint-Christophe-d'Arthabaska topped the guideline; your own house needs its own test.
How is Saint-Christophe-d'Arthabaska’s Hazard risk Grade worked out?
Saint-Christophe-d'Arthabaska’s Hazard risk grade is A−, built on earthquakes and radon with a one-sided wildfire input.
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).