Photo: P199 · CC BY-SA 3.0Enniskillen is on Canada’s flood inventory: 1 listed, led by St. Clair Region Conservation Authority
Fire has left almost no mark near Enniskillen: 0% of the land within 25 km since 1986, 0.000% a year. Shaking is about as much of a worry in Enniskillen as in most places, at $0.017 a year per $1,000 of building value ($0.030 typical). In Health Canada’s survey, 8.4% of homes tested in Enniskillen’s area exceeded 200 Bq/m³, close to the typical 6.6%. Enniskillen grades B+ for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Enniskillen’s hazards
For Enniskillen, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Enniskillen faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Enniskillen grades B+ for hazard risk
Earthquake risk and radon make Enniskillen’s grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
Its place: #488 of 866 in Ontario and #1,090 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 Enniskillen: 0% of the land within 25 km burned since 1986, 0% within 5 km
Fires mapped since 1986 around where Enniskillen’s residents live, and the fuel next to their homes.
Low by Canadian standards: 0.000% of the land a year around Enniskillen, 0.000% for the typical Canadian town.
Forest makes up 0.1% of the land within 5 km of Enniskillen and 0.2% 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 Ontario · highest of 871
Near-zero burning puts Enniskillen with 638 of the 871 towns in Ontario, far below Sioux Lookout at 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.
Most of the country’s 2,610 towns are low-band (92%, against 7.5% above); around Enniskillen, 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.
St. Clair Region Conservation Authority has mapped flooding for Enniskillen (1 study)
Flood studies whose area touches Enniskillen, from NRCan’s inventory, each linked to its owner.
A 2009 study by St. Clair Region Conservation Authority covers Enniskillen, and its map, not the inventory, shows the zones.
| Study | By | Year | Status |
|---|---|---|---|
| SCRCA Floodplain Estimation Study for Ontario Regulation 171-06 | St. Clair Region Conservation Authority | 2009 | final · not public |
Towns with a flood study on file
Enniskillen is one of the 69% of towns in Ontario with a flood study on file; across Canada it is 58%.
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 Enniskillen’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.”
Natural Resources Canada, Canada Flood Map Inventory; links go to each study’s owner.
Earthquakes cost buildings in Enniskillen $0.017 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.
Nothing unusual about Enniskillen’s ground: $0.017 against a typical $0.030, 0.6 times.
Shaking damage a year per $1,000 of building value
The typical town in Ontario expects $0.043 a year in shaking damage; Enniskillen expects less, $0.017, and Alexandria the most, $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.
Earthquakes cost less around Enniskillen than in 70% of Canada’s 2,611 towns.
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 Enniskillen.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
8.4% of homes tested around Enniskillen are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Enniskillen’s area, at 8.4%, is close to the 6.6% of the typical Canadian town.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Enniskillen’s area, at 8.4%, is above the median in Ontario (4%), and 0.6% 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.
Radon tops the guideline in a modest share of homes around Enniskillen, a band holding 37% of Canada’s 2,611 towns; 26% rank above.
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 Enniskillen, 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). · Data for radon tests covers the Lambton Health Unit
Where to get warnings in Enniskillen
Environment and Climate Change Canada issues the weather alerts for Enniskillen; 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 Enniskillen, and listen to local authorities for orders.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Enniskillen’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Enniskillen | Low | $0.017 | 8.4% | Yes |
| Petrolia 6,422 · 2.1 km | Low | $0.015 | 8.4% | Yes |
| Plympton-Wyoming 9,548 · 15 km | Low | $0.014 | 8.4% | Yes |
The neighbour with the most fire is Petrolia (low), still no more than Enniskillen (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Enniskillen faces
Practical steps for Enniskillen’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
- 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 Enniskillen.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Enniskillen’s census subdivision (a neighbourhood shows its city’s).
- Wildfire counts one way. For Enniskillen, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Enniskillen takes its 2007 health region’s share.
Questions about flooding and hazards in Enniskillen
How is Enniskillen’s Hazard risk Grade worked out?
Enniskillen grades B+ for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Does Enniskillen flood?
The inventory lists a study touching Enniskillen; whether a given street floods is on that map, not in the grade.
Is Enniskillen at risk of wildfire?
The burned-area record shows next to nothing around Enniskillen (0% within 25 km since 1986), so its band is low.
Is radon a problem in Enniskillen?
8.4% of the 178 homes Health Canada tested around Enniskillen topped the guideline; your own house needs its own test.
How big is the earthquake risk in Enniskillen?
About $0.017 a year per $1,000 of building value, NRCan’s long-run expectation for Enniskillen.
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).