Photo: Compagnie aérienne franco-canadienne · Public domainFlood mapping exists for Témiscouata-sur-le-Lac: 2 on record, latest by Gouvernement du Québec
Wildfire isn’t Témiscouata-sur-le-Lac’s worry: 0% of the land within 25 km burned since 1986 (0.000% a year). Seismic risk runs high: $0.061 of expected damage per $1,000 of buildings a year, the typical town $0.030. More homes than usual carry radon here, 14% over the guideline where the typical town has 6.6%. Témiscouata-sur-le-Lac grades C− for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Témiscouata-sur-le-Lac’s hazards
Four national sources, each read for Témiscouata-sur-le-Lac: earthquakes, radon, past fires and flood studies.
What Témiscouata-sur-le-Lac faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Témiscouata-sur-le-Lac grades C− for hazard risk
The grade weighs Témiscouata-sur-le-Lac’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: #418 of 507 in Quebec and #2,406 of 2,589 Canadian towns.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. Small fires and grass fires are largely missing from the national burned-area record.
Wildfire is rare near Témiscouata-sur-le-Lac: 0% of the land within 25 km burned since 1986, 0% within 5 km
Fires mapped since 1986 around where Témiscouata-sur-le-Lac’s residents live, and the fuel next to their homes.
Low: the land around Témiscouata-sur-le-Lac burns at 0.000% a year, where the typical Canadian town sees 0.000%.
Since 1986 the nearest fire to Témiscouata-sur-le-Lac’s homes came within 12 km, never inside 5 km.
Near or far, forest fuel covers a similar share around Témiscouata-sur-le-Lac: 55% within 5 km and 52% 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
Among the 513 towns in Quebec, Mistissini burns fastest (0.31% a year); Témiscouata-sur-le-Lac is with the 144 near zero.
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; Témiscouata-sur-le-Lac 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.
Témiscouata-sur-le-Lac is on the flood map inventory: 2 studies, latest by Gouvernement du Québec
Flood studies whose area touches Témiscouata-sur-le-Lac, from NRCan’s inventory, each linked to its owner.
For Témiscouata-sur-le-Lac the inventory points to 2 studies, most recently Gouvernement du Québec’s in 2007.
| Study | By | Year | Status |
|---|---|---|---|
| Cabano | Gouvernement du Québec | 2007 | final |
| Témiscouata-Rivière-du-Loup | Gouvernement du Québec | 2007 | final |
Towns with a flood study on file
Mapping in Quebec reaches 45% of towns, Témiscouata-sur-le-Lac 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.
Flood is shown here, never graded: a study says where a map exists, not how many of Témiscouata-sur-le-Lac’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.”
Natural Resources Canada, Canada Flood Map Inventory; links go to each study’s owner.
Earthquakes cost buildings in Témiscouata-sur-le-Lac $0.061 per $1,000 a year
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
The typical town loses $0.030 a year to shaking; Témiscouata-sur-le-Lac loses $0.061, 2 times as much.
Shaking damage a year per $1,000 of building value
The typical town in Quebec expects $0.14 a year in shaking damage; Témiscouata-sur-le-Lac expects less, $0.061, 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.
In the upper part of Canada’s range: 29% of its 2,611 towns expect more damage than Témiscouata-sur-le-Lac.
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 Témiscouata-sur-le-Lac’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).
14% of homes tested around Témiscouata-sur-le-Lac are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Radon runs above the typical Canadian town (6.6%) in Témiscouata-sur-le-Lac’s area, at 14%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon runs higher around Témiscouata-sur-le-Lac than in most towns in Quebec: 14% over the guideline (8.2% is typical), 1.8% over 600.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
4.6% of Canada’s 2,611 towns have a higher share of homes over 200 Bq/m³ than Témiscouata-sur-le-Lac, in the 10–20% band with 22%.
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.
The survey sampled homes around Témiscouata-sur-le-Lac; it can’t tell you your basement’s level.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Radon tests: one figure for all of the Bas-Saint-Laurent health region
Weather and fire alerts for Témiscouata-sur-le-Lac
Environment and Climate Change Canada issues the weather alerts for Témiscouata-sur-le-Lac; 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 Témiscouata-sur-le-Lac 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 Témiscouata-sur-le-Lac
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Témiscouata-sur-le-Lac | Low | $0.061 | 14% | Yes |
| Saint-Louis-du-Ha! Ha! 1,352 · 9.2 km | Low | $0.077 | 14% | None listed |
Saint-Louis-du-Ha! Ha! burns a little more than Témiscouata-sur-le-Lac, in the same low band (low here).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Témiscouata-sur-le-Lac faces
What to do about the hazards Témiscouata-sur-le-Lac 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
- Wildfire counts one way. Wildfire is read from the national burned-area record around Témiscouata-sur-le-Lac’s homes since 1986, a history of fire that may lower Risk but never raises it.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Témiscouata-sur-le-Lac takes its 2007 health region’s share.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Témiscouata-sur-le-Lac’s figure is its subdivision’s.
- Flood studies aren’t flood zones. The flood inventory points to maps; it is incomplete and not the official source, so ask the municipality about any street in Témiscouata-sur-le-Lac.
Questions about flooding and hazards in Témiscouata-sur-le-Lac
Does Témiscouata-sur-le-Lac flood?
The inventory lists a study touching Témiscouata-sur-le-Lac; whether a given street floods is on that map, not in the grade.
Is radon a problem in Témiscouata-sur-le-Lac?
Around Témiscouata-sur-le-Lac, 171 survey homes were tested and 14% came in over 200 Bq/m³, a guide to the area, not to any one home.
How big is the earthquake risk in Témiscouata-sur-le-Lac?
About $0.061 a year per $1,000 of building value, NRCan’s long-run expectation for Témiscouata-sur-le-Lac.
How is Témiscouata-sur-le-Lac’s Hazard risk Grade worked out?
Témiscouata-sur-le-Lac grades C− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Is Témiscouata-sur-le-Lac at risk of wildfire?
Fire has reached 0% of the land around Témiscouata-sur-le-Lac since 1986 (last in 1999); at low, it neither helps nor hurts the 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).