Photo: Benson Kua from Toronto, Canada · CC BY-SA 2.0Woburn North is on Canada’s flood inventory: 1 listed, led by Toronto Regional Conservation Authority
Fire has left almost no mark near Woburn North: 0% of the land within 25 km since 1986, 0.001% a year. Seismic risk in Woburn North sits near the middle: $0.043 of expected damage per $1,000 of buildings a year, the typical town $0.030. Radon is lower than usual: 2.7% of tested homes in the survey area topped the guideline, against 6.6% for the typical town. Hazard risk gives Woburn North a grade of A−; its wildfire band pulls it down.
What stands out about Woburn North’s hazards
For Woburn North, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Woburn North faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Woburn North grades A− for hazard risk
Two inputs always count for Woburn North, earthquakes and radon; the third, wildfire, counts only against a town.
Its place: #285 of 866 in Ontario and #700 of 2,589 Canadian towns.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. The radon share rests on 74 home tests in the survey area, so a few homes move it. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Few fires near Woburn North: 0% within 5 km, 0% within 25 km
Past fire around Woburn North’s homes, from the national burned-area record, with the fuel within 5 km.
At 0.001% of the land a year, Woburn North’s burn rate is in the low band; the typical Canadian town sees 0.000%.
Woburn North’s homes have had no fire within 5 km since 1986; the closest was 11 km away.
Land that isn’t forest covers nearly all the ground around Woburn North: forest fuel is 0.6% within 5 km and 3.8% 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 Ontario · highest of 871
In the top quarter in Ontario: Woburn North ranks 83rd of 871 at 0.001% a year, with Sioux Lookout first 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.
The low band takes in 92% of Canada’s 2,610 towns, Woburn North 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.
A flood study covers Woburn North, from Toronto Regional Conservation Authority: 1 on the inventory
What Canada’s Flood Map Inventory lists for Woburn North: who studied flooding and where to see their maps.
Toronto Regional Conservation Authority studied flooding in an area that includes Woburn North (2021); open its map to see which streets lie in a flood zone.
| Study | By | Year | Status |
|---|---|---|---|
| Toronto Floodline Consolidation | Toronto Regional Conservation Authority | 2021 | final |
Towns with a flood study on file
Woburn North is one of the 69% of towns in Ontario with a flood study on file; across Canada it is 58%.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Listed, not scored: a flood study proves a map exists, not that Woburn North floods.
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 Woburn North: $0.043 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
1.4 times the typical $0.030: Woburn North’s $0.043 is ordinary.
For earthquake risk, the only official count covers all of the city of Toronto, Woburn North included.
Shaking damage a year per $1,000 of building value
Woburn North’s $0.043 is close to the median in Ontario, $0.043; Alexandria is highest at $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.
Middle of the pack: 36% of Canada’s 2,611 towns have more earthquake risk than Woburn North.
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).
Only shaking damage to buildings in Woburn North is counted; landslides, liquefaction, tsunami and fire after a quake aren’t.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Radon runs low around Woburn North: 2.7% of tested homes over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Woburn North’s survey area reads 2.7% over the guideline, under the typical Canadian town’s 6.6%. Behind radon tests sits data gathered across the City of Toronto Health Unit, with Woburn North one part of it.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
The median in Ontario is 4% over 200 Bq/m³; around Woburn North it is 2.7%.
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 Woburn North, 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.
Whatever Woburn North’s area share, the reading that matters is your own home’s, over a winter.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Woburn North
Alerts for Woburn North 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 Woburn North 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)
Hazards in the places around Woburn North
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Woburn North | Low | $0.043 | 2.7% | Yes |
| Bendale-Glen Andrew 19,134 · 1.9 km | Low | $0.043 | 2.7% | Yes |
| Golfdale-Cedarbrae-Woburn 27,429 · 1.9 km | Low | $0.043 | 2.7% | Yes |
| Agincourt South-Malvern West 24,438 · 2.6 km | Low | $0.043 | 2.7% | Yes |
| Bendale South 10,885 · 2.7 km | Low | $0.043 | 2.7% | Yes |
| Morningside 17,708 · 2.8 km | Low | $0.043 | 2.7% | Yes |
| Eglinton East 22,820 · 3.5 km | Low | $0.043 | 2.7% | Yes |
Fire is no heavier anywhere nearby than around Woburn North (low), with Bendale-Glen Andrew next at low.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Woburn North faces
What to do about the hazards Woburn North 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. The flood inventory points to maps; it is incomplete and not the official source, so ask the municipality about any street in Woburn North.
- Wildfire counts one way. For Woburn North, 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. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Woburn North takes its 2007 health region’s share.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Woburn North’s census subdivision (a neighbourhood shows its city’s).
Questions about flooding and hazards in Woburn North
How is Woburn North’s Hazard risk Grade worked out?
Hazard risk gives Woburn North A−, weighing earthquakes and radon and counting wildfire only against it.
How big is the earthquake risk in Woburn North?
In NRCan’s seismic model, Woburn North’s buildings lose $0.043 per $1,000 of value in an average year.
Is radon a problem in Woburn North?
Around Woburn North, 74 survey homes were tested and 2.7% came in over 200 Bq/m³, a guide to the area, not to any one home.
Does Woburn North flood?
The inventory lists a study touching Woburn North; whether a given street floods is on that map, not in the grade.
Is Woburn North at risk of wildfire?
Fire has reached 0% of the land around Woburn North since 1986 (last in 2001); 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).