Photo: Dillan Payne · CC BY-SA 2.0Flood mapping exists for Yonge-Eglinton: 1 on record, latest by Toronto Regional Conservation Authority
Wildfire barely registers for Yonge-Eglinton, at 0% of the land within 25 km since 1986 (0.000% a year). For earthquakes Yonge-Eglinton is middling, $0.043 a year per $1,000 against $0.030 for the typical town. In Health Canada’s survey, just 2.7% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Yonge-Eglinton grades A− for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Yonge-Eglinton’s hazards
For Yonge-Eglinton, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Yonge-Eglinton faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Yonge-Eglinton: A−
Seismic risk and radon set Yonge-Eglinton’s grade, wildfire can drag it down, and flood mapping stays out of it.
Its place: #285 of 866 in Ontario and #700 of 2,589 Canadian towns.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. Only 74 homes were tested in the survey area, so the radon share is rough. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Few fires near Yonge-Eglinton: 0% within 5 km, 0% within 25 km
Past fire around Yonge-Eglinton’s homes, from the national burned-area record, with the fuel within 5 km.
In a typical year 0.000% of the land near Yonge-Eglinton burns; the typical Canadian town sees 0.000%, and both are low.
Forest fuel is scarce around Yonge-Eglinton: 0.2% of the land within 5 km, 1.2% 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
Of the 871 towns in Ontario, 638 have a burn rate that rounds to zero, Yonge-Eglinton among them; Sioux Lookout leads at 0.16% a year.
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.
Most of the country’s 2,610 towns are low-band (92%, against 7.5% above); around Yonge-Eglinton, burning 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.
Yonge-Eglinton is on the flood map inventory: 1 study, by Toronto Regional Conservation Authority
What Canada’s Flood Map Inventory lists for Yonge-Eglinton: who studied flooding and where to see their maps.
For Yonge-Eglinton the inventory points to Toronto Regional Conservation Authority’s 2021 study, whose map is the one to check.
| Study | By | Year | Status |
|---|---|---|---|
| Toronto Floodline Consolidation | Toronto Regional Conservation Authority | 2021 | final |
Towns with a flood study on file
Flood maps are common in Ontario: 69% of towns have one, against 58% nationally, and Yonge-Eglinton is among them.
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 Yonge-Eglinton.
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 Yonge-Eglinton: $0.043 per $1,000 of buildings a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Earthquake losses in Yonge-Eglinton, $0.043 per $1,000, are in line with the typical $0.030 (1.4 times).
Shaking damage a year per $1,000 of building value
Yonge-Eglinton’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.
Around half of Canada’s 2,611 towns expect more shaking damage than Yonge-Eglinton (36%).
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 Yonge-Eglinton 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). · Earthquake risk: the city of Toronto
2.7% of homes tested around Yonge-Eglinton are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
A lower share than most: 2.7% of tested homes around Yonge-Eglinton, the typical Canadian town 6.6%. For radon tests, the only official count covers all of the City of Toronto Health Unit, Yonge-Eglinton included.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
The median in Ontario is 4% over 200 Bq/m³; around Yonge-Eglinton it is 2.7%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Few tests over the guideline: Yonge-Eglinton shares the bottom band with 37% of Canada’s 2,611 towns, below the other 63%.
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.
A low area share in Yonge-Eglinton doesn’t clear a house, nor does a high one condemn it: test.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Yonge-Eglinton
Alerts for Yonge-Eglinton 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 Yonge-Eglinton 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 Yonge-Eglinton
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Yonge-Eglinton | Low | $0.043 | 2.7% | Yes |
| South Eglinton-Davisville 23,380 · 0.7 km | Low | $0.043 | 2.7% | None listed |
| North Toronto 16,007 · 0.9 km | Low | $0.043 | 2.7% | Yes |
| Lawrence Park South 15,018 · 1.2 km | Low | $0.043 | 2.7% | Yes |
| Mount Pleasant East 16,373 · 1.4 km | Low | $0.043 | 2.7% | Yes |
| Yonge-St.Clair 13,177 · 1.7 km | Low | $0.043 | 2.7% | None listed |
| Forest Hill South 11,059 · 1.7 km | Low | $0.043 | 2.7% | None listed |
Nowhere around Yonge-Eglinton burns more: South Eglinton-Davisville, the closest rival, is low to its low.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Yonge-Eglinton faces
Practical steps for Yonge-Eglinton’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?
- Check the address on the flood map.
- Are flood and wildfire insured?
What this data can and can’t tell you
- 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 Yonge-Eglinton until then.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Yonge-Eglinton’s census subdivision (a neighbourhood shows its city’s).
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Yonge-Eglinton without grading them.
- Wildfire counts one way. For Yonge-Eglinton, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
Questions about flooding and hazards in Yonge-Eglinton
Is radon a problem in Yonge-Eglinton?
The area’s survey found 2.7% of 74 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Yonge-Eglinton.
Is Yonge-Eglinton at risk of wildfire?
No meaningful wildfire history near Yonge-Eglinton: 0% of nearby land since 1986, band low.
Does Yonge-Eglinton flood?
A flood study covers Yonge-Eglinton on Canada’s Flood Map Inventory; open the owner’s map to check a street, since flood isn’t graded.
How big is the earthquake risk in Yonge-Eglinton?
NRCan’s model expects shaking to cost buildings in Yonge-Eglinton $0.043 a year for every $1,000 of their value, on average over many years.
How is Yonge-Eglinton’s Hazard risk Grade worked out?
Yonge-Eglinton grades A− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers 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).