Hazards in Seven Oaks: wildfire low, radon over the guideline in 12% of tested homes
Since 1986 almost nothing has burned near Seven Oaks: 0% of the land within 25 km, or 0.001% a year. Earthquakes matter little: NRCan’s model puts building losses at $0.006 a year per $1,000 of value, against $0.030 for the typical town. Seven Oaks grades B+ for hazard risk, with wildfire counted against it.
What stands out about Seven Oaks’s hazards
For Seven Oaks, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Seven Oaks faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Seven Oaks: B+
Seismic risk and radon set Seven Oaks’ grade, wildfire can drag it down, and flood mapping stays out of it.
Its place: #10 of 185 in Manitoba and #940 of 2,589 Canadian towns.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. The radon share rests on 66 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.
Few fires near Seven Oaks: 0% within 5 km, 0% within 25 km
Past fire around Seven Oaks’ homes, from the national burned-area record, with the fuel within 5 km.
Seven Oaks burns at 0.001% a year, low against 0.000% for the typical Canadian town.
Fire has stayed at least 16 km from Seven Oaks’ homes since 1986.
With 0% forest fuel within 5 km and 0.1% within 25 km, the land around Seven Oaks gives a fire little to burn.
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 Manitoba · highest of 189
At 0.001% a year, Seven Oaks is near the top in Manitoba: 31st of 189, behind Flin Flon (Part) (1.68%).
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, Seven Oaks 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.
The flood map inventory lists nothing for Seven Oaks
What Canada’s Flood Map Inventory lists for Seven Oaks: who studied flooding and where to see their maps.
Nationally, Seven Oaks has no listed flood study; the municipality is the place to ask.
Towns with a flood study on file
Flood maps are thinner in Manitoba, 18% of towns against 58% nationally, and Seven Oaks has none.
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 Seven Oaks’ 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.”
Little shaking expected in Seven Oaks: $0.006 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Shaking costs the typical town $0.030 a year; in Seven Oaks it is only $0.006, 0.2 times as much.
Figures for earthquake risk are published for the city of Winnipeg as a whole, not for Seven Oaks alone.
Shaking damage a year per $1,000 of building value
Earthquake risk around Seven Oaks ($0.006) matches the middle in Manitoba ($0.006), far from Virden’s $0.007.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
Most of Canada’s 2,611 towns (88%) face more earthquake damage than Seven Oaks.
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 Seven Oaks 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).
Test for radon in Seven Oaks: 12% of area homes were over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline. · Measured across the Winnipeg health region: radon tests
Radon runs above the typical Canadian town (6.6%) in Seven Oaks’ area, at 12%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Seven Oaks’ area, at 12%, is close to the median in Manitoba (12%).
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Seven Oaks is in the 10–20% band, with 22% of Canada’s 2,611 towns; only 4.6% are higher.
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 Seven Oaks 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 Seven Oaks
Environment and Climate Change Canada issues the weather alerts for Seven Oaks; 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 Seven Oaks, 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 Seven Oaks
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Seven Oaks | Low | $0.006 | 12% | None listed |
| Jefferson 11,524 · 1.0 km | Low | $0.006 | 12% | None listed |
| Luxton 3,047 · 1.3 km | Low | $0.006 | 12% | None listed |
| Kildonan Drive 5,063 · 1.4 km | Low | $0.006 | 12% | None listed |
| St. John's 8,492 · 1.6 km | Low | $0.006 | 12% | None listed |
| Munroe West 2,532 · 1.9 km | Low | $0.006 | 12% | None listed |
| Rossmere-B 4,732 · 2.0 km | Low | $0.006 | 12% | None listed |
None of the places around has more fire nearby than Seven Oaks (low); Jefferson comes closest (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Seven Oaks faces
Practical steps for Seven Oaks’ 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?
- Ask the municipality for flood maps.
- 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, Seven Oaks’ included.
- 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 Seven Oaks.
- Radon is a survey. The radon share comes from about 14,000 long-term home tests in 2009–2011, pooled for now by the 2007 health region Seven Oaks sits in.
- Flood studies aren’t flood zones. A study’s area can be a whole watershed or province, so being on the inventory says a map exists, not that a home in Seven Oaks floods.
Questions about flooding and hazards in Seven Oaks
How is Seven Oaks’s Hazard risk Grade worked out?
Seven Oaks grades B+ for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Is Seven Oaks at risk of wildfire?
Some, but Seven Oaks’ low band (0% of nearby land burned since 1986, latest 2012) is short of the level that counts.
Is radon a problem in Seven Oaks?
The area’s survey found 12% of 66 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Seven Oaks.
Does Seven Oaks flood?
The inventory has 0 studies for Seven Oaks, and an empty list isn’t a clean bill: the municipality holds any flood maps.
How big is the earthquake risk in Seven Oaks?
NRCan’s model expects shaking to cost buildings in Seven Oaks $0.006 a year for every $1,000 of their value, on average over many years.
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).