Photo: Earth Science and Remote Sensing Unit, NASA Johnson Space Center · Public domainHigh radon around Rosedale: 35% of homes tested in the area exceed 200 Bq/m³
Wildfire is rare near Rosedale: 0.5% of the land within 25 km has burned since 1986, a burn rate of 0.01% a year. Shaking is less of a worry than in most places, at $0.004 a year per $1,000 of building value ($0.030 typical). Hazard risk gives Rosedale a grade of B; its wildfire band pulls it down.
What stands out about Rosedale’s hazards
For Rosedale, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Rosedale faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Rosedale grades B for hazard risk
The grade weighs Rosedale’s seismic risk and radon equally, and wildfire is one-sided: a high band counts against a town, a low one earns nothing.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Wildfire is rare near Rosedale: 0.5% of the land within 25 km burned since 1986, 0% within 5 km
Past fire around Rosedale’s homes, from the national burned-area record, with the fuel within 5 km.
Next to the typical Canadian town (0.000% a year), Rosedale’s 0.01% is in the low band.
The 5 km ring around Rosedale’s homes is clear of burns since 1986, the nearest 8.8 km out.
Little near Rosedale’s homes can carry a forest fire; only 0.2% of the land within 5 km is forest fuel, and 3.7% 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 Manitoba · highest of 190
Flin Flon (Part) burns fastest in Manitoba at 1.68% a year; Rosedale, at 0.01%, ranks 25th of 190.
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.
Low, like 92% of the country’s 2,610 towns: the land around Rosedale burns, but slower than in the 7.5% above it.
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.
No flood study is listed for Rosedale
What Canada’s Flood Map Inventory lists for Rosedale: who studied flooding and where to see their maps.
Nationally, Rosedale has no listed flood study; the municipality is the place to ask.
Towns with a flood study on file
Mapping in Manitoba reaches 18% of towns, below the 58% across Canada, and not Rosedale.
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 Rosedale’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.”
Little shaking expected in Rosedale: $0.004 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
0.1 times the typical $0.030: Rosedale’s $0.004 is low for Canada.
Shaking damage a year per $1,000 of building value
The typical town in Manitoba expects $0.006 a year in shaking damage; Rosedale expects less, $0.004, and Virden the most, $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.
Rosedale is among Canada’s quietest towns for earthquakes: 98% of the 2,611 expect more damage.
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).
What a quake does after the shaking, fire, landslides, tsunami, falls outside NRCan’s figure for Rosedale.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Radon runs high around Rosedale: 35% of tested homes over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline. · Area-wide: radon tests, counted over the Assiniboine health region
Rosedale’s area, at 35%, is above the 6.6% of the typical Canadian town, so testing is worth more here than most places.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
More homes top the guideline around Rosedale (35%) than in the typical town in Manitoba (12%); 1.8% went over 600.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
No band is higher: Rosedale is among the 1.5% of Canada’s towns with 30% or more of tests over 200 Bq/m³.
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.
Whatever Rosedale’s area share, the reading that matters is your own home’s, over a winter.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Rosedale
Environment and Climate Change Canada issues the weather alerts for Rosedale; 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 Rosedale, and listen to local authorities for orders.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Get ready for what Rosedale faces
What to do about the hazards Rosedale 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?
- Ask the municipality for flood maps.
- Are flood and wildfire insured?
What this data can and can’t tell you
- Wildfire counts one way. For Rosedale, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Rosedale’s census subdivision (a neighbourhood shows its city’s).
- Radon is a survey. About 14,000 homes were tested across Canada in 2009–2011, and the share over the guideline for Rosedale is its health region’s, the survey’s design unit.
- Flood studies aren’t flood zones. NRCan’s inventory says where flood mapping exists, not where water goes; the map’s owner is the authority for Rosedale.
Questions about flooding and hazards in Rosedale
Does Rosedale flood?
With 0 studies on the inventory, Rosedale’s flood risk is unmapped nationally; check with the municipality before buying.
How big is the earthquake risk in Rosedale?
NRCan’s model expects shaking to cost buildings in Rosedale $0.004 a year for every $1,000 of their value, on average over many years.
How is Rosedale’s Hazard risk Grade worked out?
Hazard risk gives Rosedale B, weighing earthquakes and radon and counting wildfire only against it.
Is Rosedale at risk of wildfire?
Fire has reached 0.5% of the land around Rosedale since 1986 (last in 2025); at low, it neither helps nor hurts the grade.
Is radon a problem in Rosedale?
Around Rosedale, 110 survey homes were tested and 35% came in over 200 Bq/m³, a guide to the area, not to any one home.
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).