Photo: Gabriel Picard · CC BY-SA 4.0Flood mapping exists for Saint-Casimir: 1 on record, latest by Gouvernement du Québec
Since 1986 almost nothing has burned near Saint-Casimir: 0% of the land within 25 km, or 0.001% a year. Earthquakes add more: NRCan’s model puts building losses at $0.14 a year per $1,000 of value, against $0.030 for the typical town. In Health Canada’s survey, 8.8% of homes tested in Saint-Casimir’s area exceeded 200 Bq/m³, close to the typical 6.6%. Hazard risk gives Saint-Casimir a grade of C−, from earthquakes and radon alone.
What stands out about Saint-Casimir’s hazards
Four national sources, each read for Saint-Casimir: earthquakes, radon, past fires and flood studies.
What Saint-Casimir 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-Casimir: C−
For Saint-Casimir, Risk will be the average of earthquakes and radon, with wildfire added only if it makes the average worse.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. Small fires and grass fires are largely missing from the national burned-area record.
Few fires near Saint-Casimir: 0% within 5 km, 0% within 25 km
Past fire around Saint-Casimir’s homes, from the national burned-area record, with the fuel within 5 km.
With 0.001% burned a year, Saint-Casimir is among the many low-band places (the typical Canadian town 0.000%).
The 5 km ring around Saint-Casimir’s homes is clear of burns since 1986, the nearest 5.4 km out.
More forest grows near Saint-Casimir’s homes (39% within 5 km) than across 25 km (30%).
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
Saint-Casimir sits mid-table in Quebec: 136th of 514 towns, at 0.001% a year, well behind Mistissini (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.
7.5% of Canada’s 2,610 towns burn fast enough to rank moderate or above; Saint-Casimir stays low, with 92%.
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-Casimir is on the flood map inventory: 1 study, by Gouvernement du Québec
What Canada’s Flood Map Inventory lists for Saint-Casimir: who studied flooding and where to see their maps.
Gouvernement du Québec studied flooding in an area that includes Saint-Casimir (2008); open its map to see which streets lie in a flood zone.
| Study | By | Year | Status |
|---|---|---|---|
| St-Casimir | Gouvernement du Québec | 2008 | final |
Towns with a flood study on file
Flood maps are thinner in Quebec, 45% of towns against 58% nationally, but Saint-Casimir has one.
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-Casimir 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.
Earthquakes cost buildings in Saint-Casimir $0.14 per $1,000 a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Roughly 4.8 times the typical $0.030: Saint-Casimir’s $0.14 marks real seismic exposure.
Shaking damage a year per $1,000 of building value
Neither high nor low in Quebec: Saint-Casimir’s $0.14 sits by the median of $0.14, while La Pocatière reaches $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: 20% of its 2,611 towns expect more damage than Saint-Casimir.
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 loss is to Saint-Casimir’s buildings alone, from ground shaking; infrastructure and secondary hazards are left out.
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-Casimir: 8.8% of area homes over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline. · Radon tests for the Capitale-Nationale health region
Near the middle for radon: Saint-Casimir’s area 8.8%, the typical Canadian town 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Around Saint-Casimir, 8.8% of tests topped the guideline, close to the typical town in Quebec (8.2%); 2.5% were over 600.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Between 5% and 10% of tests over the guideline: Saint-Casimir, and 37% of Canada’s 2,611 towns; 26% are 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.
Basements, soil and how a house is sealed decide its radon, so in Saint-Casimir only a test can say.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Saint-Casimir
Alerts for Saint-Casimir 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. |
Evacuation orders for Saint-Casimir come from the municipality or the province, while CWFIS maps fire danger every day.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Saint-Casimir’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-Casimir | Low | $0.14 | 8.8% | Yes |
| Saint-Marc-des-Carrières 2,961 · 7.4 km | Low | $0.14 | 8.8% | None listed |
| Saint-Alban 1,264 · 9.6 km | Low | $0.11 | 8.8% | None listed |
| Sainte-Anne-de-la-Pérade 2,036 · 11 km | Low | $0.13 | 0% | None listed |
| Deschambault-Grondines 2,251 · 14 km | Low | $0.12 | 8.8% | None listed |
| Saint-Ubalde 1,565 · 14 km | Low | $0.078 | 8.8% | None listed |
None of the places around has more fire nearby than Saint-Casimir (low); Saint-Marc-des-Carrières comes closest (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Saint-Casimir faces
Practical steps for Saint-Casimir’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.
- 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-Casimir until then.
- Earthquakes are modelled. Shaking damage is modelled from the ground, the buildings and the odds of each quake, and published for whole subdivisions such as Saint-Casimir’s.
- Wildfire counts one way. The wildfire figure is the share of land within 25 km of Saint-Casimir’s homes burned each year from 1986 to 2025, past fire rather than a forecast, and it can only lower Risk.
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Saint-Casimir without grading them.
Questions about flooding and hazards in Saint-Casimir
Does Saint-Casimir flood?
A flood study covers Saint-Casimir 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-Casimir?
The area’s survey found 8.8% of 160 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Saint-Casimir.
How big is the earthquake risk in Saint-Casimir?
In NRCan’s seismic model, Saint-Casimir’s buildings lose $0.14 per $1,000 of value in an average year.
How is Saint-Casimir’s Hazard risk Grade worked out?
Saint-Casimir grades C− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Is Saint-Casimir at risk of wildfire?
Some, but Saint-Casimir’s low band (0% of nearby land burned since 1986, latest 2022) is short of the level that counts.
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).