Photo: Eliser24 · CC BY-SA 4.0A flood study covers Sainte-Catherine-de-Hatley: 1 on the national inventory, the newest from Gouvernement du Québec
The national fire record shows next to nothing around Sainte-Catherine-de-Hatley, 0% of the land within 25 km since 1986 (0.000% a year). Seismic risk in Sainte-Catherine-de-Hatley sits near the middle: $0.038 of expected damage per $1,000 of buildings a year, the typical town $0.030. About as many homes carry radon around Sainte-Catherine-de-Hatley as elsewhere, 7.3% over the guideline where the typical town has 6.6%. Sainte-Catherine-de-Hatley grades B for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Sainte-Catherine-de-Hatley’s hazards
Four national sources, each read for Sainte-Catherine-de-Hatley: earthquakes, radon, past fires and flood studies.
What Sainte-Catherine-de-Hatley faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Sainte-Catherine-de-Hatley grades B for hazard risk
The grade weighs Sainte-Catherine-de-Hatley’s seismic risk and radon equally, and wildfire is one-sided: a high band counts against a town, a low one earns nothing.
Its place: #49 of 507 in Quebec and #1,403 of 2,589 Canadian towns.
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. Small fires and grass fires are largely missing from the national burned-area record.
Few fires near Sainte-Catherine-de-Hatley: 0% within 5 km, 0% within 25 km
Past fire around Sainte-Catherine-de-Hatley’s homes, from the national burned-area record, with the fuel within 5 km.
At 0.000% of the land a year, Sainte-Catherine-de-Hatley’s burn rate is in the low band; the typical Canadian town sees 0.000%.
Fire has stayed at least 9.7 km from Sainte-Catherine-de-Hatley’s homes since 1986.
The ring nearest Sainte-Catherine-de-Hatley is the most wooded: 45% forest fuel within 5 km against 33% 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
Little or nothing burns around Sainte-Catherine-de-Hatley in a typical year; 144 of the 513 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.
92% of Canada’s 2,610 towns are in the low band and 7.5% above it; Sainte-Catherine-de-Hatley 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.
A flood study covers Sainte-Catherine-de-Hatley, from Gouvernement du Québec: 1 on the inventory
What Canada’s Flood Map Inventory lists for Sainte-Catherine-de-Hatley: who studied flooding and where to see their maps.
Gouvernement du Québec holds the flood mapping that covers Sainte-Catherine-de-Hatley (2004), linked below.
| Study | By | Year | Status |
|---|---|---|---|
| Hatley | Gouvernement du Québec | 2004 | final |
Towns with a flood study on file
Flood maps are thinner in Quebec, 45% of towns against 58% nationally, but Sainte-Catherine-de-Hatley 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 Sainte-Catherine-de-Hatley 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.
Expected shaking damage in Sainte-Catherine-de-Hatley: $0.038 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Nothing unusual about Sainte-Catherine-de-Hatley’s ground: $0.038 against a typical $0.030, 1.3 times.
Shaking damage a year per $1,000 of building value
Sainte-Catherine-de-Hatley’s $0.038 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.
Neither high nor low for Canada: 45% of the 2,611 towns expect more damage than Sainte-Catherine-de-Hatley.
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 Sainte-Catherine-de-Hatley’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).
Radon about average around Sainte-Catherine-de-Hatley: 7.3% over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline. · Radon tests for the Estrie health region
Sainte-Catherine-de-Hatley’s area sits close to the typical Canadian town: 7.3% over the guideline, against 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon around Sainte-Catherine-de-Hatley 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.
A middling share of high tests puts Sainte-Catherine-de-Hatley with 37% of Canada’s 2,611 towns, below 26% of them.
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 Sainte-Catherine-de-Hatley only a test can say.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Sainte-Catherine-de-Hatley
Alerts for Sainte-Catherine-de-Hatley 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 Sainte-Catherine-de-Hatley 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 Sainte-Catherine-de-Hatley’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 |
|---|---|---|---|---|
| Sainte-Catherine-de-Hatley | Low | $0.038 | 7.3% | Yes |
| Magog 30,764 · 9.2 km | Low | $0.047 | 7.3% | None listed |
| Ayer's Cliff 1,284 · 9.3 km | Low | $0.042 | 7.3% | Yes |
| Hatley 2,512 · 12 km | Low | $0.046 | 7.3% | Yes |
| Waterville 2,643 · 12 km | Low | $0.039 | 7.3% | Yes |
| Orford 5,698 · 14 km | Low | $0.042 | 7.3% | Yes |
| Compton 3,351 · 16 km | Low | $0.039 | 7.3% | None listed |
None of the places around has more fire nearby than Sainte-Catherine-de-Hatley (low); Magog comes closest (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Sainte-Catherine-de-Hatley faces
What to do about the hazards Sainte-Catherine-de-Hatley 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. Flood studies cover areas of every size, which is why the page lists them for Sainte-Catherine-de-Hatley without grading them.
- 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 Sainte-Catherine-de-Hatley until then.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Sainte-Catherine-de-Hatley’s homes since 1986, a history of fire that may lower Risk but never raises it.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Sainte-Catherine-de-Hatley’s figure is its subdivision’s.
Questions about flooding and hazards in Sainte-Catherine-de-Hatley
How big is the earthquake risk in Sainte-Catherine-de-Hatley?
In NRCan’s seismic model, Sainte-Catherine-de-Hatley’s buildings lose $0.038 per $1,000 of value in an average year.
Is Sainte-Catherine-de-Hatley at risk of wildfire?
Fire has reached 0% of the land around Sainte-Catherine-de-Hatley since 1986 (last in 2016); at low, it neither helps nor hurts the grade.
How is Sainte-Catherine-de-Hatley’s Hazard risk Grade worked out?
Sainte-Catherine-de-Hatley’s Hazard risk grade is B, built on earthquakes and radon with a one-sided wildfire input.
Does Sainte-Catherine-de-Hatley flood?
A flood study covers Sainte-Catherine-de-Hatley 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 Sainte-Catherine-de-Hatley?
Around Sainte-Catherine-de-Hatley, 55 survey homes were tested and 7.3% came in over 200 Bq/m³, a guide to the area, not to any one home.
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).