Hazard risk in Woodhill is lower than in 89% of Canadian towns
Wildfire isn’t Woodhill’s worry: 0% of the land within 25 km burned since 1986 (0.000% a year). For earthquakes Woodhill is middling, $0.030 a year per $1,000 against $0.030 for the typical town. Radon is lower than usual: 0% of tested homes in the survey area topped the guideline, against 6.6% for the typical town. Woodhill grades A for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Woodhill’s hazards
For Woodhill, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Woodhill faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Woodhill: A
Earthquake risk and radon make Woodhill’s grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
Its place: #105 of 866 in Ontario and #417 of 2,589 Canadian towns.
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.
Few fires near Woodhill: 0% within 5 km, 0% within 25 km
Fires mapped since 1986 around where Woodhill’s residents live, and the fuel next to their homes.
In a typical year 0.000% of the land near Woodhill burns; the typical Canadian town sees 0.000%, and both are low.
Close to Woodhill there is little to burn (0.6% forest fuel within 5 km), but 5.4% of the land within 25 km is forest.
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, Woodhill 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.
Like most of Canada’s 2,610 towns (92%), Woodhill is in the low band, with a burn rate of zero to three decimals; 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.
2 flood studies cover Woodhill, the newest from Toronto Regional Conservation Authority
Flood studies whose area touches Woodhill, from NRCan’s inventory, each linked to its owner.
Toronto Regional Conservation Authority and others have studied flooding in areas that include Woodhill: 2 studies, the latest from 2021.
| Study | By | Year | Status |
|---|---|---|---|
| Toronto Floodline Consolidation | Toronto Regional Conservation Authority | 2021 | final |
| Fletcher's Creek | Credit Valley Conservation Authority | 2005 | final · not public |
Towns with a flood study on file
Flood maps are common in Ontario: 69% of towns have one, against 58% nationally, and Woodhill is among them.
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 Woodhill between the 2000s and the 2020s.
Study dates as the NRCan inventory lists them, one count per study touching Woodhill.
Flood is shown here, never graded: a study says where a map exists, not how many of Woodhill’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.”
Natural Resources Canada, Canada Flood Map Inventory; links go to each study’s owner.
Expected shaking damage in Woodhill: $0.030 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.
Woodhill’s $0.030 matches the typical town’s $0.030.
Shaking damage a year per $1,000 of building value
At $0.030, Woodhill 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.
Neither high nor low for Canada: 48% of the 2,611 towns expect more damage than Woodhill.
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 Woodhill 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: one figure for all of the city of Brampton
Little radon around Woodhill: 0% of area homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Measured across the Peel Regional Health Unit: radon tests
Fewer homes than usual test high around Woodhill: 0% against 6.6% for the typical Canadian town.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
The median in Ontario is 4% over 200 Bq/m³; around Woodhill it is 0%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
63% of Canada’s 2,611 towns have a higher share of homes over 200 Bq/m³ than Woodhill’s band, which holds 37%.
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 Woodhill 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 Woodhill
Environment and Climate Change Canada issues the weather alerts for Woodhill; 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. |
In fire season, check CWFIS for danger and active fires around Woodhill, and listen to local authorities for orders.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Woodhill
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Woodhill | Low | $0.030 | 0% | Yes |
| Valley Creek 11,986 · 1.4 km | Low | $0.030 | 0% | Yes |
| Vales of Castlemore 14,894 · 2.6 km | Low | $0.030 | 0% | Yes |
| Rivers Edge / Castlemore Crossing 6,577 · 2.7 km | Low | $0.030 | 0% | Yes |
| Professors Lake 10,335 · 2.7 km | Low | $0.030 | 0% | Yes |
| Sandalwood East (mountainash) 21,801 · 2.9 km | Low | $0.030 | 0% | Yes |
| Ebenezer West 11,510 · 3.1 km | Low | $0.030 | 0% | Yes |
Valley Creek (low) has the heaviest fire record of Woodhill’s neighbours, and Woodhill (low) matches or beats it.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Woodhill faces
Practical steps for Woodhill’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
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Woodhill’s included.
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Woodhill without grading them.
- 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 Woodhill.
- 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 Woodhill until then.
Questions about flooding and hazards in Woodhill
How is Woodhill’s Hazard risk Grade worked out?
Hazard risk gives Woodhill A, weighing earthquakes and radon and counting wildfire only against it.
Does Woodhill flood?
A flood study covers Woodhill 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 Woodhill?
About $0.030 a year per $1,000 of building value, NRCan’s long-run expectation for Woodhill.
Is Woodhill at risk of wildfire?
Very little by the national record: Woodhill’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 Woodhill?
The area’s survey found 0% of 90 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Woodhill.
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).