Photo: Veillg1 · CC BY-SA 4.0A flood study covers Otterburn Park: 1 on the national inventory, the newest from Gouvernement du Québec
Little of the land around Otterburn Park has burned: 0.1% within 25 km since 1986, or 0.002% a year. Shaking is a bigger worry than in most places, at $0.13 a year per $1,000 of building value ($0.030 typical). Radon around Otterburn Park is ordinary for Canada: 8.2% of tested homes over the guideline (6.6% typical). Hazard risk gives Otterburn Park a grade of C, from earthquakes and radon alone.
What stands out about Otterburn Park’s hazards
Four national sources, each read for Otterburn Park: earthquakes, radon, past fires and flood studies.
What Otterburn Park faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Otterburn Park: C
Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Otterburn Park with little fire nearby would get no credit for it.
Its place: #155 of 507 in Quebec and #2,103 of 2,589 Canadian towns.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. Small fires and grass fires are largely missing from the national burned-area record.
Few fires near Otterburn Park: 0.2% within 5 km, 0.1% within 25 km
Past fire around Otterburn Park’s homes, from the national burned-area record, with the fuel within 5 km.
With 0.002% burned a year, Otterburn Park is among the many low-band places (the typical Canadian town 0.000%).
Forest fuel is scarce around Otterburn Park: 0.6% of the land within 5 km, 1.3% 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 Quebec · highest of 513
Otterburn Park ranks 35th of the 513 towns in Quebec for burn rate, at 0.002% a year; Mistissini leads with 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, Otterburn Park 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.
A flood study covers Otterburn Park, from Gouvernement du Québec: 1 on the inventory
What Canada’s Flood Map Inventory lists for Otterburn Park: who studied flooding and where to see their maps.
A 1979 study by Gouvernement du Québec covers Otterburn Park, and its map, not the inventory, shows the zones.
| Study | By | Year | Status |
|---|---|---|---|
| Sorel-Chambly | Gouvernement du Québec | 1979 | final |
Towns with a flood study on file
Otterburn Park 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.
The grade leaves flood out, since a study area says nothing about how many of Otterburn Park’s homes are at risk.
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 Otterburn Park’s costliest hazard: $0.13 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
The typical town loses $0.030 a year to shaking; Otterburn Park loses $0.13, 4.3 times as much.
Shaking damage a year per $1,000 of building value
Otterburn Park’s $0.13 is close to the median in Quebec, $0.14; La Pocatière is highest at $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.
In the upper part of Canada’s range: 22% of its 2,611 towns expect more damage than Otterburn Park.
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).
Roads, pipes and bridges aren’t in Otterburn Park’s figure, nor landslides or tsunami: it is buildings and shaking.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Radon about average around Otterburn Park: 8.2% over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Near the middle for radon: Otterburn Park’s area 8.2%, the typical Canadian town 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Around Otterburn Park, 8.2% of tests topped the guideline, about the same as the typical town in Quebec (8.2%).
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
A middling share of high tests puts Otterburn Park with 37% of Canada’s 2,611 towns, below 26% of them.
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 Otterburn Park; it can’t tell you your basement’s level.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Radon tests: the Monteregie health region
Weather and fire alerts for Otterburn Park
Environment and Climate Change Canada issues the weather alerts for Otterburn Park; 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 Otterburn Park, 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)
Hazards in the places around Otterburn Park
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Otterburn Park | Low | $0.13 | 8.2% | Yes |
| McMasterville 6,114 · 2.8 km | Low | $0.18 | 8.2% | Yes |
| Mont-Saint-Hilaire 19,447 · 3.5 km | Low | $0.12 | 8.2% | Yes |
| Beloeil 25,240 · 4.3 km | Low | $0.20 | 8.2% | Yes |
| Saint-Jean-Baptiste 3,332 · 6.7 km | Low | $0.12 | 8.2% | None listed |
| Saint-Basile-le-Grand 17,146 · 6.9 km | Low | $0.18 | 8.2% | Yes |
| Saint-Mathieu-de-Beloeil 2,999 · 7.5 km | Low | $0.15 | 8.2% | Yes |
McMasterville (low) has the heaviest fire record of Otterburn Park’s neighbours, and Otterburn Park (low) matches or beats it.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Otterburn Park faces
What to do about the hazards Otterburn Park 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.
- Drop, cover and hold on.
- Strap the water heater down.
- Keep 72 hours of supplies.
- Has it had a radon test?
- Check the address on the flood map.
- Are flood and wildfire insured?
- Is earthquake cover included?
What this data can and can’t tell you
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Otterburn Park without grading them.
- Wildfire counts one way. The wildfire figure is the share of land within 25 km of Otterburn Park’s homes burned each year from 1986 to 2025, past fire rather than a forecast, and it can only lower Risk.
- 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 Otterburn Park until then.
- Earthquakes are modelled. Shaking damage is modelled from the ground, the buildings and the odds of each quake, and published for whole subdivisions such as Otterburn Park’s.
Questions about flooding and hazards in Otterburn Park
Is radon a problem in Otterburn Park?
Around Otterburn Park, 110 survey homes were tested and 8.2% came in over 200 Bq/m³, a guide to the area, not to any one home.
How big is the earthquake risk in Otterburn Park?
NRCan’s model expects shaking to cost buildings in Otterburn Park $0.13 a year for every $1,000 of their value, on average over many years.
Does Otterburn Park flood?
A flood study covers Otterburn Park on Canada’s Flood Map Inventory; open the owner’s map to check a street, since flood isn’t graded.
Is Otterburn Park at risk of wildfire?
Fire has reached 0.1% of the land around Otterburn Park since 1986 (last in 2024); at low, it neither helps nor hurts the grade.
How is Otterburn Park’s Hazard risk Grade worked out?
Otterburn Park 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).