Photo: Silver Dovelet · CC BY-SA 3.0Few places are as safe from hazards as Hagerman's Corners: it beats 88% of Canadian towns
No wildfire is mapped within 25 km of Hagerman's Corners’ homes since 1986 (0% of the land, 0.001% a year). Shaking is about as much of a worry in Hagerman's Corners as in most places, at $0.034 a year per $1,000 of building value ($0.030 typical). Fewer homes than usual carry radon here, 0% over the guideline where the typical town has 6.6%. Hagerman's Corners grades A for hazard risk, with wildfire counted against it.
What stands out about Hagerman's Corners’s hazards
Four national sources, each read for Hagerman's Corners: earthquakes, radon, past fires and flood studies.
What Hagerman's Corners faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Hagerman's Corners: A
Two inputs always count for Hagerman's Corners, earthquakes and radon; the third, wildfire, counts only against a town.
Its place: #165 of 866 in Ontario and #484 of 2,589 Canadian towns.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. Small fires and grass fires are largely missing from the national burned-area record.
Wildfire is rare near Hagerman's Corners: 0% of the land within 25 km burned since 1986, 0% within 5 km
Fires mapped since 1986 around where Hagerman's Corners’ residents live, and the fuel next to their homes.
Low: the land around Hagerman's Corners burns at 0.001% a year, where the typical Canadian town sees 0.000%.
Hagerman's Corners’ homes have had no fire within 5 km since 1986; the closest was 9.4 km away.
Homes in Hagerman's Corners sit on open or built-up ground (1.1% forest fuel within 5 km); the wider 25 km holds 5.8%.
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
The land around Hagerman's Corners burns at 0.001% a year, the 83rd highest rate of 871 towns in Ontario; Sioux Lookout tops it 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, Hagerman's Corners 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.
Flooding around Hagerman's Corners is mapped in 2 studies, the newest by Toronto Regional Conservation Authority
Flood studies whose area touches Hagerman's Corners, from NRCan’s inventory, each linked to its owner.
Toronto Regional Conservation Authority and others have studied flooding in areas that include Hagerman's Corners: 2 studies, the latest from 2021.
| Study | By | Year | Status |
|---|---|---|---|
| Toronto Floodline Consolidation | Toronto Regional Conservation Authority | 2021 | final |
| Unionville Special Policy Area | Toronto and Region Conservation Authority | 2019 | final |
Towns with a flood study on file
Its flood study puts Hagerman's Corners 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.
No single decade dominates: 2 studies for Hagerman's Corners between the 2010s and the 2020s.
Study dates as the NRCan inventory lists them, one count per study touching Hagerman's Corners.
Nothing here counts toward Risk; the studies are pointers to the maps their owners keep for Hagerman's Corners.
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 Hagerman's Corners: $0.034 a year per $1,000
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
Earthquake losses in Hagerman's Corners, $0.034 per $1,000, are in line with the typical $0.030 (1.1 times).
For earthquake risk, the only official count covers all of the city of Markham, Hagerman's Corners included.
Shaking damage a year per $1,000 of building value
At $0.034, Hagerman's Corners is below the typical town 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: 46% of Canada’s 2,611 towns have more earthquake risk than Hagerman's Corners.
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).
The model counts damage to Hagerman's Corners’ buildings and their occupants from shaking only: not liquefaction, landslides, tsunami or fires after a quake.
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 Hagerman's Corners: 0% of area homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · The radon tests numbers here cover the York Regional Health Unit
Fewer homes than usual test high around Hagerman's Corners: 0% against 6.6% for the typical Canadian town.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Against the typical town in Ontario (4%), the area around Hagerman's Corners has fewer high tests: 0%.
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 Hagerman's Corners, 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.
The survey sampled homes around Hagerman's Corners; it can’t tell you your basement’s level.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Hagerman's Corners
Environment and Climate Change Canada issues the weather alerts for Hagerman's Corners; 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. |
For fires near Hagerman's Corners, the national fire information system maps danger and active fires daily; local authorities give any evacuation order.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Hagerman's Corners’ neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Hagerman's Corners | Low | $0.034 | 0% | Yes |
| Underwood 5,972 · 1.7 km | Low | $0.034 | 0% | None listed |
| Milliken 12,138 · 2.3 km | Low | $0.034 | 0% | Yes |
| Vinegar Hill 19,543 · 2.6 km | Low | $0.034 | 0% | Yes |
| Milliken 24,431 · 2.7 km | Low | $0.043 | 2.7% | Yes |
| Unionville 17,632 · 3.4 km | Low | $0.034 | 0% | Yes |
| Quantztown 13,146 · 4.0 km | Low | $0.034 | 0% | Yes |
Nowhere around Hagerman's Corners burns more: Underwood, 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 Hagerman's Corners faces
What to do about the hazards Hagerman's Corners 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
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Hagerman's Corners’ figure is its subdivision’s.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Hagerman's Corners’ homes since 1986, a history of fire that may lower Risk but never raises it.
- 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 Hagerman's Corners.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Hagerman's Corners takes its 2007 health region’s share.
Questions about flooding and hazards in Hagerman's Corners
Does Hagerman's Corners flood?
The inventory lists a study touching Hagerman's Corners; whether a given street floods is on that map, not in the grade.
Is radon a problem in Hagerman's Corners?
Around Hagerman's Corners, 95 survey homes were tested and 0% came in over 200 Bq/m³, a guide to the area, not to any one home.
How is Hagerman's Corners’s Hazard risk Grade worked out?
Hagerman's Corners 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 Hagerman's Corners?
Expected earthquake damage in Hagerman's Corners comes to $0.034 a year for each $1,000 that buildings are worth.
Is Hagerman's Corners at risk of wildfire?
Fire has reached 0% of the land around Hagerman's Corners 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).