Photo: Unknown author Unknown author · Public domainFlood mapping exists for Niverville: 1 on record, latest by Hydrologic Forecasting and Water Management Branch of Manitoba Transporation and Infrastructure
No wildfire is mapped within 25 km of Niverville’s homes since 1986 (0% of the land, 0.000% a year). Shaking is less of a worry than in most places, at $0.005 a year per $1,000 of building value ($0.030 typical). Radon around Niverville is ordinary for Canada: 9.7% of tested homes over the guideline (6.6% typical). Hazard risk gives Niverville a grade of A−, from earthquakes and radon alone.
What stands out about Niverville’s hazards
For Niverville, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Niverville faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Niverville: A−
Seismic risk and radon set Niverville’s grade, wildfire can drag it down, and flood mapping stays out of it.
Its place: #1 of 185 in Manitoba and #635 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.
Wildfire is rare near Niverville: 0% of the land within 25 km burned since 1986, 0% within 5 km
Fires mapped since 1986 around where Niverville’s residents live, and the fuel next to their homes.
Around Niverville fire takes 0.000% of the land in a typical year, the typical Canadian town 0.000%, which is low.
Nothing inside 5 km of Niverville’s homes has burned since 1986, and the nearest scar is 25 km off.
Forest makes up 0% of the land within 5 km of Niverville and 0% within 25 km, little for a forest fire to run through.
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
Of the 189 towns in Manitoba, 60 have a burn rate that rounds to zero, Niverville among them; Flin Flon (Part) leads at 1.68% a year.
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.
Most of the country’s 2,610 towns are low-band (92%, against 7.5% above); around Niverville, burning rounds to zero.
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.
Niverville is on the flood map inventory: 1 study, by Hydrologic Forecasting and Water Management Branch of Manitoba Transporation and Infrastructure
Flood studies whose area touches Niverville, from NRCan’s inventory, each linked to its owner.
One study on the inventory touches Niverville, Hydrologic Forecasting and Water Management Branch of Manitoba Transporation and Infrastructure ’s from 2025, and its area can be large, so it says a map exists, not that the town floods.
| 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
Its flood study sets Niverville apart in Manitoba, where 18% of towns have one (Canada: 58%).
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Nothing here counts toward Risk; the studies are pointers to the maps their owners keep for Niverville.
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.
Earthquakes cost buildings in Niverville just $0.005 per $1,000 a year
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
At $0.005 per $1,000, Niverville carries 0.2 times the typical Canadian town’s earthquake risk ($0.030): low.
Shaking damage a year per $1,000 of building value
Earthquake risk around Niverville ($0.005) 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.
Niverville is among Canada’s quietest towns for earthquakes: 96% 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 Niverville.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
9.7% of homes tested around Niverville are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
At 9.7% over the guideline, the area around Niverville is about level with the typical Canadian town’s 6.6%. Nobody publishes radon tests for Niverville alone, so this card uses the figure for the South Eastman health region.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Niverville’s area, at 9.7%, 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.
37% of Canada’s 2,611 towns share Niverville’s band of 5 to 10%; 26% sit 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 Niverville 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 Niverville
Environment and Climate Change Canada issues the weather alerts for Niverville; 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 Niverville, 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 Niverville
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Niverville | Low | $0.005 | 9.7% | Yes |
| St. Adolphe 8,770 · 7.1 km | Low | $0.005 | 9.7% | Yes |
| St-Pierre-Jolys 1,371 · 18 km | Low | $0.006 | 9.7% | Yes |
| La Salle 9,215 · 19 km | Low | $0.006 | 43% | Yes |
St-Pierre-Jolys burns a little more than Niverville, in the same low band (low here).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Niverville faces
Practical steps for Niverville’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
- 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 Niverville.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Niverville’s included.
- 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 Niverville 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 Niverville floods.
Questions about flooding and hazards in Niverville
Is radon a problem in Niverville?
9.7% of the 113 homes Health Canada tested around Niverville topped the guideline; your own house needs its own test.
How is Niverville’s Hazard risk Grade worked out?
Niverville grades A− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Does Niverville flood?
Niverville’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 Niverville?
Expected earthquake damage in Niverville comes to $0.005 a year for each $1,000 that buildings are worth.
Is Niverville at risk of wildfire?
Not much by Canadian standards: Niverville’s band is low, with 0% of the land within 25 km burned since 1986 (last in 2015), so wildfire doesn’t change its 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).