Photo: Félix Mathieu-Bégin · CC BY-SA 4.0A flood study covers Mansfield-et-Pontefract: 2 on the national inventory, the newest from Gouvernement du Québec
Wildfire is rare near Mansfield-et-Pontefract: 0.1% of the land within 25 km has burned since 1986, a burn rate of 0.002% a year. Shaking is a bigger worry than in most places, at $0.087 a year per $1,000 of building value ($0.030 typical). More homes than usual carry radon here, 13% over the guideline where the typical town has 6.6%. Hazard risk gives Mansfield-et-Pontefract a grade of C−, from earthquakes and radon alone.
What stands out about Mansfield-et-Pontefract’s hazards
For Mansfield-et-Pontefract, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Mansfield-et-Pontefract faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Mansfield-et-Pontefract grades C− for hazard risk
Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Mansfield-et-Pontefract with little fire nearby would get no credit for it.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. Only 63 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.
Wildfire is rare near Mansfield-et-Pontefract: 0.1% of the land within 25 km burned since 1986, 0.1% within 5 km
Fires mapped since 1986 around where Mansfield-et-Pontefract’s residents live, and the fuel next to their homes.
The land within 25 km of Mansfield-et-Pontefract burns at 0.002% a year on average, the low band; the typical Canadian town: 0.000%.
About as much forest grows next to Mansfield-et-Pontefract’s homes (19% within 5 km) as across 25 km (21%).
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 Quebec · highest of 514
In the top quarter in Quebec: Mansfield-et-Pontefract ranks 35th of 514 at 0.002% a year, with Mistissini first at 0.31%.
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.
Beside 2,610 Canadian towns, Mansfield-et-Pontefract reads low, with 92% of them; only 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 Mansfield-et-Pontefract is mapped in 2 studies, the newest by Gouvernement du Québec
Flood studies whose area touches Mansfield-et-Pontefract, from NRCan’s inventory, each linked to its owner.
For Mansfield-et-Pontefract the inventory points to 2 studies, most recently Gouvernement du Québec’s in 2008.
| Study | By | Year | Status |
|---|---|---|---|
| Mansfield-et-Pontefract | Gouvernement du Québec | 2008 | final |
| Chenal-du-Grand-Calumet-Rocher-Fendu | MRC de Pontiac | 2006 | final |
Towns with a flood study on file
Mansfield-et-Pontefract is one of the 45% of towns in Quebec with a flood study on file, fewer than Canada’s 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 Mansfield-et-Pontefract’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.
Shaking is Mansfield-et-Pontefract’s costliest hazard: $0.087 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.
The typical town loses $0.030 a year to shaking; Mansfield-et-Pontefract loses $0.087, 2.9 times as much.
Shaking damage a year per $1,000 of building value
Below the middle in Quebec: Mansfield-et-Pontefract’s $0.087 against a median of $0.14; La Pocatière has $0.48.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
27% of Canada’s 2,611 towns expect more shaking damage than Mansfield-et-Pontefract, which places it in the upper third.
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 Mansfield-et-Pontefract 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).
13% of homes tested around Mansfield-et-Pontefract are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
A higher share than most: 13% of tested homes around Mansfield-et-Pontefract, the typical Canadian town 6.6%. Behind radon tests sits data gathered across the Outaouais health region, with Mansfield-et-Pontefract one part of it.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Mansfield-et-Pontefract’s area, at 13%, is above the median in Quebec (8.2%), and 4.8% of its tests passed 600 Bq/m³.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
4.6% of Canada’s 2,611 towns have a higher share of homes over 200 Bq/m³ than Mansfield-et-Pontefract, in the 10–20% band with 22%.
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 Mansfield-et-Pontefract 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 Mansfield-et-Pontefract
Environment and Climate Change Canada issues the weather alerts for Mansfield-et-Pontefract; 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 Mansfield-et-Pontefract come through Environment Canada and Alert Ready; the fire map is CWFIS’s.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Mansfield-et-Pontefract’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Mansfield-et-Pontefract | Low | $0.087 | 13% | Yes |
| Fort-Coulonge 1,293 · 2.0 km | Low | $0.13 | 13% | Yes |
| Whitewater Region 7,899 · 17 km | Low | $0.11 | 8% | Yes |
Fort-Coulonge (low) has the heaviest fire record of Mansfield-et-Pontefract’s neighbours, and Mansfield-et-Pontefract (low) matches or beats it.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Mansfield-et-Pontefract faces
What to do about the hazards Mansfield-et-Pontefract 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
- 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 Mansfield-et-Pontefract until then.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Mansfield-et-Pontefract’s census subdivision (a neighbourhood shows its city’s).
- Wildfire counts one way. For Mansfield-et-Pontefract, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Mansfield-et-Pontefract without grading them.
Questions about flooding and hazards in Mansfield-et-Pontefract
Is radon a problem in Mansfield-et-Pontefract?
Around Mansfield-et-Pontefract, 63 survey homes were tested and 13% came in over 200 Bq/m³, a guide to the area, not to any one home.
How big is the earthquake risk in Mansfield-et-Pontefract?
About $0.087 a year per $1,000 of building value, NRCan’s long-run expectation for Mansfield-et-Pontefract.
Does Mansfield-et-Pontefract flood?
A flood study covers Mansfield-et-Pontefract on Canada’s Flood Map Inventory; open the owner’s map to check a street, since flood isn’t graded.
Is Mansfield-et-Pontefract at risk of wildfire?
Fire has reached 0.1% of the land around Mansfield-et-Pontefract since 1986 (last in 2025); at low, it neither helps nor hurts the grade.
How is Mansfield-et-Pontefract’s Hazard risk Grade worked out?
Mansfield-et-Pontefract grades C− 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).