Flood mapping exists for Laurentian West: 1 on record, latest by Grand River Conservation Authority
No wildfire is mapped within 25 km of Laurentian West’s homes since 1986 (0% of the land, 0.000% a year). Seismic risk in Laurentian West sits near the middle: $0.022 of expected damage per $1,000 of buildings a year, the typical town $0.030. In Health Canada’s survey, just 4% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Hazard risk gives Laurentian West a grade of A−, from earthquakes and radon alone.
What stands out about Laurentian West’s hazards
Four national sources, each read for Laurentian West: earthquakes, radon, past fires and flood studies.
What Laurentian West faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Laurentian West grades A− for hazard risk
The grade weighs Laurentian West’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: #237 of 866 in Ontario and #594 of 2,589 Canadian towns.
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.
Little of the land around Laurentian West has burned: 0% within 5 km, 0% within 25 km since 1986
Fires mapped since 1986 around where Laurentian West’s residents live, and the fuel next to their homes.
Around Laurentian West fire takes 0.000% of the land in a typical year, the typical Canadian town 0.000%, which is low.
Forest makes up 1.3% of the land within 5 km of Laurentian West and 2.7% within 25 km, little for a forest fire to run through.
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 Ontario · highest of 871
Near-zero burning puts Laurentian West with 638 of the 871 towns in Ontario, far below Sioux Lookout at 0.16%.
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; Laurentian West 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.
Laurentian West is on the flood map inventory: 1 study, by Grand River Conservation Authority
Flood studies whose area touches Laurentian West, from NRCan’s inventory, each linked to its owner.
Grand River Conservation Authority holds the flood mapping that covers Laurentian West (2018), linked below.
| Study | By | Year | Status |
|---|---|---|---|
| Grand River Regulatory Floodplain | Grand River Conservation Authority | 2018 | final |
Towns with a flood study on file
Its flood study puts Laurentian West with 69% of towns in Ontario; Canada’s share is 58%.
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 Laurentian West 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.
Ordinary seismic risk in Laurentian West: $0.022 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.
0.7 times the typical $0.030: Laurentian West’s $0.022 is ordinary.
Shaking damage a year per $1,000 of building value
Below the middle in Ontario: Laurentian West’s $0.022 against a median of $0.043; Alexandria has $0.21.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
Laurentian West sits mid-range among Canada’s 2,611 towns: 61% expect more shaking damage.
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).
Roads, pipes and bridges aren’t in Laurentian West’s figure, nor landslides or tsunami: it is buildings and shaking.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean). · Earthquake risk published for the city of Kitchener, not by town
Little radon around Laurentian West: 4% of area homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Area-wide: radon tests, counted over the Waterloo Health Unit
Laurentian West’s area, at 4%, 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
Radon around Laurentian West is ordinary for towns in Ontario: 4%, beside a median of 4%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Radon rarely tops the guideline around Laurentian West, as for 37% of Canada’s 2,611 towns; 63% see more.
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 Laurentian West only a test can say.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Laurentian West
Alerts for Laurentian West 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. |
Alert Ready carries evacuation orders for Laurentian West to phones; CWFIS shows the day’s fire danger.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Laurentian West
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Laurentian West | Low | $0.022 | 4% | Yes |
| Laurentian Hills 10,026 · 2.1 km | Low | $0.022 | 4% | Yes |
| Country Hills West 5,936 · 2.1 km | Low | $0.022 | 4% | Yes |
| Forest Heights 14,369 · 2.5 km | Low | $0.022 | 4% | Yes |
| Forest Hill 5,760 · 2.6 km | Low | $0.022 | 4% | Yes |
| Rosenberg 9,831 · 2.8 km | Low | $0.022 | 4% | Yes |
| Meinzinger Park-Lakeside 5,007 · 3.1 km | Low | $0.022 | 4% | Yes |
Laurentian West’s low band tops its neighbours; Laurentian Hills is next (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Laurentian West faces
What to do about the hazards Laurentian West 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 Laurentian West 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 Laurentian West until then.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Laurentian West’s figure is its subdivision’s.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Laurentian West’s homes since 1986, a history of fire that may lower Risk but never raises it.
Questions about flooding and hazards in Laurentian West
Does Laurentian West flood?
A flood study covers Laurentian West on Canada’s Flood Map Inventory; open the owner’s map to check a street, since flood isn’t graded.
How is Laurentian West’s Hazard risk Grade worked out?
Laurentian West grades A− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
How big is the earthquake risk in Laurentian West?
Expected earthquake damage in Laurentian West comes to $0.022 a year for each $1,000 that buildings are worth.
Is Laurentian West at risk of wildfire?
Hardly at all on record: 0% of the land within 25 km of Laurentian West since 1986, a low band, though small grass fires aren’t mapped.
Is radon a problem in Laurentian West?
In Health Canada’s survey, 4% of 101 homes tested in Laurentian West’s area were above 200 Bq/m³, though only a test tells you about one house.
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).