Photo: Canmenwalker · CC BY 4.0Junction-Wallace Emerson faces few natural hazards: little fire nearby, low seismic risk, radon over the guideline in 2.7% of tested homes
Wildfire barely registers for Junction-Wallace Emerson, at 0% of the land within 25 km since 1986 (0.000% a year). NRCan expects $0.043 of shaking damage a year per $1,000 of buildings in Junction-Wallace Emerson, near the typical $0.030. Hazard risk gives Junction-Wallace Emerson a grade of A−, from earthquakes and radon alone.
What stands out about Junction-Wallace Emerson’s hazards
For Junction-Wallace Emerson, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Junction-Wallace Emerson faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Junction-Wallace Emerson grades A− for hazard risk
Two inputs always count for Junction-Wallace Emerson, 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.
Wildfire is rare near Junction-Wallace Emerson: 0% of the land within 25 km burned since 1986, 0% within 5 km
Past fire around Junction-Wallace Emerson’s homes, from the national burned-area record, with the fuel within 5 km.
The land within 25 km of Junction-Wallace Emerson burns at 0.000% a year on average, the low band; the typical Canadian town: 0.000%.
Little near Junction-Wallace Emerson’s homes can carry a forest fire; only 0.5% of the land within 5 km is forest fuel, and 0.7% 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
To three decimals the burn rate around Junction-Wallace Emerson is zero, as for 638 of the 871 towns in Ontario, while Sioux Lookout reaches 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.
Measured against 2,610 towns, Junction-Wallace Emerson is in the largest group, low (92%), and at its floor, while 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.
No flood study is listed for Junction-Wallace Emerson
What Canada’s Flood Map Inventory lists for Junction-Wallace Emerson: who studied flooding and where to see their maps.
An empty entry for Junction-Wallace Emerson on the inventory isn’t proof of safety; ask locally for flood maps.
Towns with a flood study on file
Junction-Wallace Emerson has no flood study on file, though 69% of towns in Ontario do (Canada: 58%).
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 Junction-Wallace Emerson’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.”
Ordinary seismic risk in Junction-Wallace Emerson: $0.043 per $1,000 of buildings a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
At $0.043 per $1,000, Junction-Wallace Emerson’s earthquake risk is about the typical Canadian town’s ($0.030; 1.4 times).
Nobody publishes earthquake risk for Junction-Wallace Emerson alone, so this card uses the figure for the city of Toronto.
Shaking damage a year per $1,000 of building value
The median in Ontario is $0.043; Junction-Wallace Emerson, at $0.043, is right beside it, and Alexandria tops the list 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.
Junction-Wallace Emerson’s earthquake risk lands near the centre of Canada’s range; 36% of the 2,611 towns are higher.
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).
For Junction-Wallace Emerson the model prices shaking damage to buildings, nothing more.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Little radon around Junction-Wallace Emerson: 2.7% of area homes over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline. · Source area for radon tests: the City of Toronto Health Unit
Junction-Wallace Emerson’s survey area reads 2.7% over the guideline, under the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon runs lower around Junction-Wallace Emerson than in most towns in Ontario: 2.7% against 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 Junction-Wallace Emerson, 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.
Radon varies from house to house in Junction-Wallace Emerson, so the survey is a reason to test, not a result for yours.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Junction-Wallace Emerson
Environment and Climate Change Canada issues the weather alerts for Junction-Wallace Emerson; 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 Junction-Wallace Emerson 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 Junction-Wallace Emerson
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Junction-Wallace Emerson | Low | $0.043 | 2.7% | None listed |
| Dufferin Grove 11,276 · 1.1 km | Low | $0.043 | 2.7% | None listed |
| Dovercourt Village 12,378 · 1.3 km | Low | $0.043 | 2.7% | None listed |
| Weston-Pelham Park 10,680 · 1.5 km | Low | $0.043 | 2.7% | Yes |
| Corso Italia-Davenport 13,215 · 1.6 km | Low | $0.043 | 2.7% | None listed |
| High Park North 22,162 · 1.8 km | Low | $0.043 | 2.7% | None listed |
| Roncesvalles 14,725 · 2.0 km | Low | $0.043 | 2.7% | None listed |
Nowhere around Junction-Wallace Emerson burns more: Dufferin Grove, 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 Junction-Wallace Emerson faces
What to do about the hazards Junction-Wallace Emerson 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?
- 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. NRCan’s inventory says where flood mapping exists, not where water goes; the map’s owner is the authority for Junction-Wallace Emerson.
- Radon is a survey. About 14,000 homes were tested across Canada in 2009–2011, and the share over the guideline for Junction-Wallace Emerson is its health region’s, the survey’s design unit.
- Wildfire counts one way. Burned land within 25 km of where people live, averaged over 1986–2025 and checked for fuel near homes, is the measure; it looks back, not ahead, and only ever counts against Junction-Wallace Emerson.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Junction-Wallace Emerson’s included.
Questions about flooding and hazards in Junction-Wallace Emerson
How big is the earthquake risk in Junction-Wallace Emerson?
NRCan’s model expects shaking to cost buildings in Junction-Wallace Emerson $0.043 a year for every $1,000 of their value, on average over many years.
How is Junction-Wallace Emerson’s Hazard risk Grade worked out?
Junction-Wallace Emerson’s Hazard risk grade is A−, built on earthquakes and radon with a one-sided wildfire input.
Is Junction-Wallace Emerson at risk of wildfire?
Very little by the national record: Junction-Wallace Emerson’s band is low, with 0% of the land within 25 km burned since 1986, so wildfire doesn’t change its grade.
Is radon a problem in Junction-Wallace Emerson?
In Health Canada’s survey, 2.7% of 74 homes tested in Junction-Wallace Emerson’s area were above 200 Bq/m³, though only a test tells you about one house.
Does Junction-Wallace Emerson flood?
Nothing is listed for Junction-Wallace Emerson on the national inventory (0); local maps may still exist with 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).