Photo: P199 · CC BY-SA 4.0High radon around Lac du Bonnet: 21% of homes tested in the area exceed 200 Bq/m³
Fire reaches the land around Lac du Bonnet now and then: 6.4% within 25 km since 1986 (0.16% a year), below the high band. Shaking is less of a worry than in most places, at $0.004 a year per $1,000 of building value ($0.030 typical). Lac du Bonnet grades B for hazard risk, with wildfire counted against it.
What stands out about Lac du Bonnet’s hazards
For Lac du Bonnet, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Lac du Bonnet faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Lac du Bonnet grades B for hazard risk
Earthquake risk and radon make Lac du Bonnet’s grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
Its place: #135 of 185 in Manitoba and #1,399 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.
Fire reaches the land around Lac du Bonnet: 6.9% within 5 km, 6.4% within 25 km
Past fire around Lac du Bonnet’s homes, from the national burned-area record, with the fuel within 5 km.
The yearly burn rate around Lac du Bonnet is 0.16%, above 0.000% for the typical Canadian town but under the high band.
Forest fuel covers 38% of the land close to Lac du Bonnet and 46% across 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 189
The land around Lac du Bonnet burns at 0.16% a year, the 10th highest rate of 189 towns in Manitoba; Flin Flon (Part) tops it at 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.
Only 5.4% of Canada’s 2,610 towns share the moderate band with Lac du Bonnet, and 2.1% sit 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.
A flood study covers Lac du Bonnet, from Hydrologic Forecasting and Water Management Branch of Manitoba Transporation and Infrastructure : 1 on the inventory
What Canada’s Flood Map Inventory lists for Lac du Bonnet: who studied flooding and where to see their maps.
The flood study touching Lac du Bonnet is Hydrologic Forecasting and Water Management Branch of Manitoba Transporation and Infrastructure ’s, dated 2024; its own map shows the zones street by street.
| Study | By | Year | Status |
|---|---|---|---|
| Hydrodynamic study for the Whitemouth and Birch Rivers: Mapped communities: Seven Sisters Falls, River Hills, Whitemouth, Elma, Hadashville, Prawda and MacMunn | Hydrologic Forecasting and Water Management Branch of Manitoba Transporation and Infrastructure | 2024 | final · not public |
Towns with a flood study on file
Flood maps are thinner in Manitoba, 18% of towns against 58% nationally, but Lac du Bonnet has one.
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 Lac du Bonnet’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.
Low seismic risk in Lac du Bonnet: $0.004 per $1,000 of buildings a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Shaking costs the typical town $0.030 a year; in Lac du Bonnet it is only $0.004, 0.1 times as much.
Shaking damage a year per $1,000 of building value
Lac du Bonnet’s $0.004 sits under the median in Manitoba, $0.006, and well under 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.
At the bottom of Canada’s range, Lac du Bonnet has 98% of the 2,611 towns above it.
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 Lac du Bonnet 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).
Test for radon in Lac du Bonnet: 21% of area homes were over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
A higher share than most: 21% of tested homes around Lac du Bonnet, the typical Canadian town 6.6%. Nobody publishes radon tests for Lac du Bonnet alone, so this card uses the figure for the North Eastman health region.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Lac du Bonnet’s area, at 21%, is above the median in Manitoba (12%), and 1% 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.
Lac du Bonnet is in the 20–30% band, which holds only 3.1% of Canada’s 2,611 towns; 1.5% 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 Lac du Bonnet 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 Lac du Bonnet
Environment and Climate Change Canada issues the weather alerts for Lac du Bonnet; 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 Lac du Bonnet 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 Lac du Bonnet’s neighbours compare on hazards
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Lac du Bonnet | Moderate | $0.004 | 21% | Yes |
| Lac du Bonnet 1,136 · 5.1 km | Moderate | $0.005 | 21% | None listed |
| Pinawa 1,653 · 15 km | Moderate | $0.005 | 21% | None listed |
Pinawa burns a little more than Lac du Bonnet, in the same moderate band (moderate here).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Lac du Bonnet faces
Practical steps for Lac du Bonnet’s hazards, most pressing first.
- Clear needles and wood nearby.
- Keep a grab-and-go bag ready.
- In smoke, stay in; filter air.
- 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.
- Has it had a radon test?
- Check the address on the flood map.
- How close is the forest edge?
- Are flood and wildfire insured?
What this data can and can’t tell you
- Wildfire counts one way. For Lac du Bonnet, 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 Lac du Bonnet’s census subdivision (a neighbourhood shows its city’s).
- 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 Lac du Bonnet floods.
- 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 Lac du Bonnet sits in.
Questions about flooding and hazards in Lac du Bonnet
Is Lac du Bonnet at risk of wildfire?
Some, but Lac du Bonnet’s moderate band (6.4% of nearby land burned since 1986, latest 2025) is short of the level that counts.
Is radon a problem in Lac du Bonnet?
The area’s survey found 21% of 100 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Lac du Bonnet.
How is Lac du Bonnet’s Hazard risk Grade worked out?
Lac du Bonnet’s Hazard risk grade is B, built on earthquakes and radon with a one-sided wildfire input.
Does Lac du Bonnet flood?
Lac du Bonnet’s area has been studied for flooding, and the owner’s map shows which streets lie in a zone; the grade leaves flood out.
How big is the earthquake risk in Lac du Bonnet?
NRCan’s model expects shaking to cost buildings in Lac du Bonnet $0.004 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).