Photo: Adam Bishop · CC BY-SA 4.0Flood mapping exists for Leamington: 1 on record, latest by Essex Region Conservation Authority / County of Essex
Wildfire isn’t Leamington’s worry: 0% of the land within 25 km burned since 1986 (0.000% a year). NRCan expects $0.021 of shaking damage a year per $1,000 of buildings in Leamington, near the typical $0.030. Radon is higher than usual: 14% of tested homes in the survey area topped the guideline, against 6.6% for the typical town. Leamington grades C+ for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Leamington’s hazards
For Leamington, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Leamington faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Leamington: C+
The grade weighs Leamington’s seismic risk and radon equally, and wildfire is one-sided: a high band counts against a town, a low one earns nothing.
Its place: #816 of 866 in Ontario and #2,038 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.
Little of the land around Leamington has burned: 0% within 5 km, 0% within 25 km since 1986
Fires mapped since 1986 around where Leamington’s residents live, and the fuel next to their homes.
Leamington burns at 0.000% a year, low against 0.000% for the typical Canadian town.
No fire has burned within 5 km of Leamington’s homes since 1986; the nearest burn is 8.1 km away.
Around Leamington the forest is thin or far off: 0.3% of the land within 5 km and 0.2% within 25 km is forest fuel.
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
Of the 871 towns in Ontario, 638 have a burn rate that rounds to zero, Leamington among them; Sioux Lookout leads at 0.16% 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.
Measured against 2,610 towns, Leamington is in the largest group, low (92%), and at its floor, while 7.5% rank higher.
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 Leamington, from Essex Region Conservation Authority / County of Essex: 1 on the inventory
Flood studies whose area touches Leamington, from NRCan’s inventory, each linked to its owner.
Essex Region Conservation Authority / County of Essex holds the flood mapping that covers Leamington (2024), linked below.
| Study | By | Year | Status |
|---|---|---|---|
| Essex Region | Essex Region Conservation Authority / County of Essex | 2024 | final |
Towns with a flood study on file
Leamington 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 mapping is shown for Leamington to be opened and checked, never turned into a grade.
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 Leamington $0.021 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.
With $0.021 of shaking damage a year per $1,000, Leamington is about even with the typical $0.030 (0.7 times).
Shaking damage a year per $1,000 of building value
At $0.021, Leamington is below the typical town in Ontario ($0.043); Alexandria is highest at $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.
Leamington’s earthquake risk lands near the centre of Canada’s range; 63% of the 2,611 towns are higher.
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).
Only shaking damage to buildings in Leamington is counted; landslides, liquefaction, tsunami and fire after a quake aren’t.
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 Leamington: 14% of tested homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Radon runs above the typical Canadian town (6.6%) in Leamington’s area, at 14%. Behind radon tests sits data gathered across the Windsor-Essex County Health Unit, with Leamington one part of it.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
More homes top the guideline around Leamington (14%) than in the typical town in Ontario (4%); 1% went over 600.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
One test in ten or more tops the guideline around Leamington, as in 22% of Canada’s 2,611 towns; 4.6% go 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 Leamington 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 Leamington
Alerts for Leamington 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. |
Evacuation orders for Leamington come from the municipality or the province, while CWFIS maps fire danger every day.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Leamington
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Leamington | Low | $0.021 | 14% | Yes |
| Kingsville 25,302 · 12 km | Low | $0.019 | 14% | Yes |
The neighbour with the most fire is Kingsville (low), still no more than Leamington (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Leamington faces
What to do about the hazards Leamington 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.
- 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
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Leamington takes its 2007 health region’s share.
- 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 Leamington.
- 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 Leamington.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Leamington’s included.
Questions about flooding and hazards in Leamington
Does Leamington flood?
The inventory lists a study touching Leamington; whether a given street floods is on that map, not in the grade.
How big is the earthquake risk in Leamington?
Expected earthquake damage in Leamington comes to $0.021 a year for each $1,000 that buildings are worth.
How is Leamington’s Hazard risk Grade worked out?
Leamington’s Hazard risk grade is C+, built on earthquakes and radon with a one-sided wildfire input.
Is Leamington at risk of wildfire?
Fire has reached 0% of the land around Leamington since 1986 (last in 2025); at low, it neither helps nor hurts the grade.
Is radon a problem in Leamington?
Around Leamington, 195 survey homes were tested and 14% came in over 200 Bq/m³, a guide to the area, not to any one home.
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).