Photo: P199 · CC BY-SA 3.0Limoges is on Canada’s flood inventory: 3 listed, led by South Nation Conservation
The burned-area map is nearly blank around Limoges, 0% within 25 km since 1986, 0.000% a year. Seismic risk runs high: $0.20 of expected damage per $1,000 of buildings a year, the typical town $0.030. About as many homes carry radon around Limoges as elsewhere, 6.1% over the guideline where the typical town has 6.6%. Hazard risk gives Limoges a grade of C, from earthquakes and radon alone.
What stands out about Limoges’s hazards
For Limoges, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Limoges faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Limoges grades C for hazard risk
Two inputs always count for Limoges, earthquakes and radon; the third, wildfire, counts only against a town.
Its place: #829 of 866 in Ontario and #2,063 of 2,589 Canadian towns.
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 Limoges: 0% of the land within 25 km burned since 1986, 0% within 5 km
Past fire around Limoges’ homes, from the national burned-area record, with the fuel within 5 km.
The land within 25 km of Limoges burns at 0.000% a year on average, the low band; the typical Canadian town: 0.000%.
Fire has stayed at least 19 km from Limoges’ homes since 1986.
About as much forest grows next to Limoges’ homes (7.2% within 5 km) as across 25 km (7.3%).
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 Ontario · highest of 871
To three decimals the burn rate around Limoges is zero, as for 638 of the 871 towns in Ontario, while Sioux Lookout reaches 0.16%.
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 holds 92% of Canada’s 2,610 towns, and Limoges sits at its very bottom; only 7.5% are 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.
Limoges is on the flood map inventory: 3 studies, latest by South Nation Conservation
What Canada’s Flood Map Inventory lists for Limoges: who studied flooding and where to see their maps.
3 studies on the inventory touch Limoges, the newest South Nation Conservation’s from 2024, and their areas can be large, so they say maps exist, not that the town floods.
| Study | By | Year | Status |
|---|---|---|---|
| Bear Brook Flood Mapping | South Nation Conservation | 2024 | under review · not public |
| Castor River Flood Mapping | South Nation Conservation | 2024 | under review · not public |
| Delineating Flood Hazard and Associated Impacts in the Hawkesbury Creek Watershed | South Nation Conservation | 2016 | final |
Towns with a flood study on file
Its flood study puts Limoges with 69% of towns in Ontario; Canada’s share is 58%.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Mapping around Limoges goes back to the 2010s and peaks in the 2020s, with 2 of its 3 studies.
Study dates as the NRCan inventory lists them, one count per study touching Limoges.
Listed, not scored: a flood study proves a map exists, not that Limoges floods.
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 Limoges $0.20 per $1,000 a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
At $0.20 per $1,000, Limoges carries roughly 6.6 times the typical Canadian town’s earthquake risk ($0.030).
Shaking damage a year per $1,000 of building value
The typical town in Ontario expects $0.043 a year; Limoges expects $0.20, and Alexandria $0.21.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
More earthquake risk than most: only 12% of Canada’s 2,611 towns are above Limoges.
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 Limoges 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).
6.1% of homes tested around Limoges are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Around Limoges, 6.1% of tested homes topped the guideline, near the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Around Limoges, 6.1% of tests were over 200 Bq/m³ and 1% over 600, against a median of 4% in Ontario.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
26% of Canada’s 2,611 towns have more homes over 200 Bq/m³ than Limoges’ 5–10% band, which holds 37%.
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.
Radon varies from house to house in Limoges, so the survey is a reason to test, not a result for yours.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Not measured by town: radon tests (the The Eastern Ontario Health Unit)
Where to get warnings in Limoges
Alerts for Limoges 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. |
Alert Ready carries evacuation orders for Limoges to phones; CWFIS shows the day’s fire danger.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Limoges
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Limoges | Low | $0.20 | 6.1% | Yes |
| Casselman 4,535 · 4.3 km | Low | $0.20 | 6.1% | None listed |
| North Stormont 7,946 · 16 km | Low | $0.20 | 6.1% | Yes |
| Embrun 23,655 · 17 km | Low | $0.19 | 6.1% | Yes |
| Vars 2,767 · 18 km | Low | $0.15 | 6.2% | Yes |
Fire is no heavier anywhere nearby than around Limoges (low), with Casselman next at low.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Limoges faces
What to do about the hazards Limoges 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.
- Drop, cover and hold on.
- Strap the water heater down.
- Keep 72 hours of supplies.
- Has it had a radon test?
- Check the address on the flood map.
- Are flood and wildfire insured?
- Is earthquake cover included?
What this data can and can’t tell you
- 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 Limoges.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Limoges’ 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 Limoges is its health region’s, the survey’s design unit.
- Wildfire counts one way. For Limoges, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
Questions about flooding and hazards in Limoges
Is Limoges at risk of wildfire?
Less than most of Canada: 0% of the land within 25 km of Limoges has burned since 1986, the last in 2020, a low band that leaves Risk alone.
How big is the earthquake risk in Limoges?
NRCan’s model expects shaking to cost buildings in Limoges $0.20 a year for every $1,000 of their value, on average over many years.
How is Limoges’s Hazard risk Grade worked out?
Hazard risk gives Limoges C, weighing earthquakes and radon and counting wildfire only against it.
Is radon a problem in Limoges?
In Health Canada’s survey, 6.1% of 99 homes tested in Limoges’ area were above 200 Bq/m³, though only a test tells you about one house.
Does Limoges flood?
There is flood mapping for Limoges on the national inventory, each study linked to its owner’s map, none of them graded.
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).