Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainDivision No. 4, Subdivision A’s hazards at a glance: a low wildfire record and 10% of area homes over the radon guideline
Little of the land around Division No. 4, Subdivision A has burned: 0.2% within 25 km since 1986, or 0.004% a year. Seismic risk runs low: $0.009 of expected damage per $1,000 of buildings a year, the typical town $0.030. Hazard risk gives Division No. 4, Subdivision A a grade of B+; its wildfire band pulls it down.
What stands out about Division No. 4, Subdivision A’s hazards
For Division No. 4, Subdivision A, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Division No. 4, Subdivision A faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Division No. 4, Subdivision A grades B+ for hazard risk
Seismic risk and radon set Division No. 4, Subdivision A’s grade, wildfire can drag it down, and flood mapping stays out of it.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Wildfire is rare near Division No. 4, Subdivision A: 0.2% of the land within 25 km burned since 1986, 0% within 5 km
Past fire around Division No. 4, Subdivision A’s homes, from the national burned-area record, with the fuel within 5 km.
Next to the typical Canadian town (0.000% a year), Division No. 4, Subdivision A’s 0.004% is in the low band.
Forest fuel is denser close to Division No. 4, Subdivision A (80% within 5 km) than further out (57% 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 Newfoundland and Labrador · highest of 33
Some fire is mapped around Division No. 4, Subdivision A (0.004% a year), but it ranks only 25th of 33 towns in Newfoundland and Labrador; Labrador City has 0.43%.
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.
The low band takes in 92% of Canada’s 2,610 towns, Division No. 4, Subdivision A among them, though its rate is above zero; 7.5% rank 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.
The flood map inventory lists nothing for Division No. 4, Subdivision A
What Canada’s Flood Map Inventory lists for Division No. 4, Subdivision A: who studied flooding and where to see their maps.
The inventory has nothing for Division No. 4, Subdivision A, but a local or conservation-authority map may still exist.
Towns with a flood study on file
Mapping in Newfoundland and Labrador reaches 59% of towns, beside 58% across Canada, but not Division No. 4, Subdivision A.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Flood studies don’t enter the grade; they are listed so you can open the official map for Division No. 4, Subdivision A.
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.”
Earthquakes cost buildings in Division No. 4, Subdivision A just $0.009 per $1,000 a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
At $0.009 per $1,000, Division No. 4, Subdivision A carries 0.3 times the typical Canadian town’s earthquake risk ($0.030): low.
Shaking damage a year per $1,000 of building value
Typical for its province: Division No. 4, Subdivision A at $0.009 beside a median in Newfoundland and Labrador of $0.011, with Holyrood on top at $0.015.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
Toward the quiet end of Canada’s range: 86% of its 2,611 towns sit above Division No. 4, Subdivision A.
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).
What a quake does after the shaking, fire, landslides, tsunami, falls outside NRCan’s figure for Division No. 4, Subdivision A.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Test for radon in Division No. 4, Subdivision A: 10% of area homes were over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Division No. 4, Subdivision A’s survey area reads 10% over the guideline, well past the typical Canadian town’s 6.6%. Nobody publishes radon tests for Division No. 4, Subdivision A alone, so this card uses the figure for the Western Regional Integrated Health Authority.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon runs higher around Division No. 4, Subdivision A than in most towns in Newfoundland and Labrador: 10% over the guideline (4% is typical), 1.9% over 600.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
One test in ten or more tops the guideline around Division No. 4, Subdivision A, as in 22% of Canada’s 2,611 towns; 4.6% go 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.
Neighbouring homes in Division No. 4, Subdivision A can differ a lot; only a long-term test tells you about yours.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Division No. 4, Subdivision A
Alerts for Division No. 4, Subdivision A 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. |
Fire danger and active fires near Division No. 4, Subdivision A are mapped daily by the Canadian Wildland Fire Information System; evacuation orders come from the municipality or province.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Get ready for what Division No. 4, Subdivision A faces
Practical steps for Division No. 4, Subdivision A’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?
- Ask the municipality for flood maps.
- 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 Division No. 4, Subdivision A without grading them.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Division No. 4, Subdivision A’s census subdivision (a neighbourhood shows its city’s).
- Wildfire counts one way. For Division No. 4, Subdivision A, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
- 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 Division No. 4, Subdivision A until then.
Questions about flooding and hazards in Division No. 4, Subdivision A
How big is the earthquake risk in Division No. 4, Subdivision A?
NRCan’s model expects shaking to cost buildings in Division No. 4, Subdivision A $0.009 a year for every $1,000 of their value, on average over many years.
Is radon a problem in Division No. 4, Subdivision A?
10% of the 211 homes Health Canada tested around Division No. 4, Subdivision A topped the guideline; your own house needs its own test.
How is Division No. 4, Subdivision A’s Hazard risk Grade worked out?
Hazard risk gives Division No. 4, Subdivision A B+, weighing earthquakes and radon and counting wildfire only against it.
Is Division No. 4, Subdivision A at risk of wildfire?
Not much by Canadian standards: Division No. 4, Subdivision A’s band is low, with 0.2% of the land within 25 km burned since 1986 (last in 2025), so wildfire doesn’t change its grade.
Does Division No. 4, Subdivision A flood?
No study on Canada’s Flood Map Inventory covers Division No. 4, Subdivision A (0), which doesn’t mean it has never been mapped, so ask the municipality.
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).