Photo: Ken Lund from Reno, Nevada, USA · CC BY-SA 2.0Around La Salle, 43% of tested homes have radon above the guideline
Wildfire isn’t La Salle’s worry: 0% of the land within 25 km burned since 1986 (0.000% 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. Hazard risk gives La Salle a grade of C+, from earthquakes and radon alone.
What stands out about La Salle’s hazards
Four national sources, each read for La Salle: earthquakes, radon, past fires and flood studies.
What La Salle faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in La Salle: C+
Earthquake risk and radon make La Salle’s grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
Its place: #174 of 185 in Manitoba and #1,819 of 2,589 Canadian towns.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. Small fires and grass fires are largely missing from the national burned-area record.
Little of the land around La Salle has burned: 0% within 5 km, 0% within 25 km since 1986
Fires mapped since 1986 around where La Salle’s residents live, and the fuel next to their homes.
At 0.000% of the land a year, La Salle’s burn rate is in the low band; the typical Canadian town sees 0.000%.
Little near La Salle’s homes can carry a forest fire; only 0% of the land within 5 km is forest fuel, and 0% 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 189
Fire has taken almost none of the land around La Salle, as for 60 of the 189 towns in Manitoba; Flin Flon (Part) tops the list 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 7.5% of Canada’s 2,610 towns are above the low band, which holds 92%; La Salle, at a rounded zero, is far from them.
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 La Salle, from Hydrologic Forecasting and Water Management Branch of Manitoba Transporation and Infrastructure : 1 on the inventory
Flood studies whose area touches La Salle, from NRCan’s inventory, each linked to its owner.
Hydrologic Forecasting and Water Management Branch of Manitoba Transporation and Infrastructure studied flooding in an area that includes La Salle (2025); open its map to see which streets lie in a flood zone.
| Study | By | Year | Status |
|---|---|---|---|
| Hydrodynamic Modelling Study for the Red River | Hydrologic Forecasting and Water Management Branch of Manitoba Transporation and Infrastructure | 2025 | final · not public |
Towns with a flood study on file
Mapping in Manitoba reaches 18% of towns, La Salle among them, below the 58% across Canada.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Flood studies don’t enter the grade; they are listed so you can open the official map for La Salle.
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.
Little shaking expected in La Salle: $0.006 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.
Shaking costs the typical town $0.030 a year; in La Salle it is only $0.006, 0.2 times as much.
Shaking damage a year per $1,000 of building value
Shaking damage around La Salle runs at $0.006 a year, near the $0.006 of the typical town in Manitoba; Virden has $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.
88% of Canada’s 2,611 towns expect more shaking damage than La Salle.
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 La Salle’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 runs high around La Salle: 43% of tested homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
La Salle’s area, at 43%, is above the 6.6% of the typical Canadian town, so testing is worth more here than most places. For radon tests, the only official count covers all of the Central health region, La Salle included.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon runs higher around La Salle than in most towns in Manitoba: 43% over the guideline (12% is typical), 7.4% 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: La Salle 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.
Basements, soil and how a house is sealed decide its radon, so in La Salle only a test can say.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for La Salle
Alerts for La Salle come from Environment and Climate Change Canada and, for emergencies, Alert Ready.
| 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. |
Fire danger and active fires near La Salle are mapped daily by the Canadian Wildland Fire Information System; evacuation orders come from the municipality or province.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around La Salle
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| La Salle | Low | $0.006 | 43% | Yes |
| South Pointe 8,168 · 12 km | Low | $0.006 | 12% | None listed |
| Bridgwater Trails 11,365 · 13 km | Low | $0.006 | 12% | None listed |
| St. Norbert 8,251 · 13 km | Low | $0.006 | 12% | Yes |
| Richmond West 6,114 · 13 km | Low | $0.006 | 12% | None listed |
| St. Adolphe 8,770 · 14 km | Low | $0.005 | 9.7% | Yes |
| Bridgwater Forest 5,076 · 15 km | Low | $0.006 | 12% | None listed |
South Pointe (low) has the heaviest fire record of La Salle’s neighbours, and La Salle (low) matches or beats it.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what La Salle faces
Practical steps for La Salle’s 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?
- Check the address on the flood map.
- Are flood and wildfire insured?
What this data can and can’t tell you
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; La Salle’s figure is its subdivision’s.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, La Salle takes its 2007 health region’s share.
- Wildfire counts one way. Wildfire is read from the national burned-area record around La Salle’s homes since 1986, a history of fire that may lower Risk but never raises it.
- Flood studies aren’t flood zones. The flood inventory points to maps; it is incomplete and not the official source, so ask the municipality about any street in La Salle.
Questions about flooding and hazards in La Salle
Does La Salle flood?
The inventory lists a study touching La Salle; whether a given street floods is on that map, not in the grade.
Is La Salle at risk of wildfire?
No meaningful wildfire history near La Salle: 0% of nearby land since 1986, band low.
How big is the earthquake risk in La Salle?
Expected earthquake damage in La Salle comes to $0.006 a year for each $1,000 that buildings are worth.
How is La Salle’s Hazard risk Grade worked out?
La Salle grades C+ for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Is radon a problem in La Salle?
The area’s survey found 43% of 108 tested homes above Health Canada’s guideline, so a three-month test is worth doing in La Salle.
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).