Photo: Municipal Affairs and Housing · CC BY 2.0Flood mapping exists for Kitchener: 1 on record, latest by Grand River Conservation Authority
The burned-area map is nearly blank around Kitchener, 0% within 25 km since 1986, 0.000% a year. For earthquakes Kitchener is middling, $0.022 a year per $1,000 against $0.030 for the typical town. In Health Canada’s survey, just 4% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical).
What stands out about Kitchener’s hazards
For Kitchener, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Kitchener faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Kitchener: the grade is still to come
The grade weighs Kitchener’s seismic risk and radon equally, and wildfire is one-sided: a high band counts against a town, a low one earns nothing.
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.
Few fires near Kitchener: 0% within 5 km, 0% within 25 km
Past fire around Kitchener’s homes, from the national burned-area record, with the fuel within 5 km.
The land within 25 km of Kitchener burns at 0.000% a year on average, the low band; the typical Canadian town: 0.000%.
Little near Kitchener’s homes can carry a forest fire; only 1.9% of the land within 5 km is forest fuel, and 3.8% 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 Ontario · highest of 872
Near-zero burning puts Kitchener with 639 of the 872 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.
The low band holds 92% of Canada’s 2,610 towns, and Kitchener 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.
Kitchener is on the flood map inventory: 1 study, by Grand River Conservation Authority
What Canada’s Flood Map Inventory lists for Kitchener: who studied flooding and where to see their maps.
Grand River Conservation Authority studied flooding in an area that includes Kitchener (2018); open its map to see which streets lie in a flood zone.
| Study | By | Year | Status |
|---|---|---|---|
| Grand River Regulatory Floodplain | Grand River Conservation Authority | 2018 | final |
Towns with a flood study on file
Its flood study puts Kitchener 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.
Flood mapping is shown for Kitchener 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.
Ordinary seismic risk in Kitchener: $0.022 per $1,000 of buildings a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Kitchener’s $0.022 is close to the typical town’s $0.030 (0.7 times as much).
Shaking damage a year per $1,000 of building value
At $0.022, Kitchener 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.
Kitchener’s earthquake risk lands near the centre of Canada’s range; 61% 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 Kitchener 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).
4% of homes tested around Kitchener are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline. · Radon tests for the Waterloo Health Unit
Where the typical Canadian town has 6.6% of homes over the guideline, Kitchener’s area has fewer, 4%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Kitchener’s area, at 4%, is close to the median in Ontario (4%).
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Kitchener is in the lowest band, with 37% of Canada’s 2,611 towns: under 5% of tests over the guideline, while 63% have more.
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.
A low area share in Kitchener doesn’t clear a house, nor does a high one condemn it: test.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Kitchener
Alerts for Kitchener 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 Kitchener 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 Kitchener
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Kitchener | Low | $0.022 | 4% | Yes |
| Southdale 5,277 · 0.4 km | Low | $0.022 | 4% | Yes |
| Alpine 3,055 · 1.2 km | Low | $0.022 | 4% | Yes |
| Mill Courtland Woodside Park 3,319 · 1.5 km | Low | $0.022 | 4% | Yes |
| Cedar Hill 3,190 · 1.6 km | Low | $0.022 | 4% | Yes |
| Laurentian Hills 10,026 · 1.8 km | Low | $0.022 | 4% | Yes |
| Meinzinger Park-Lakeside 5,007 · 1.8 km | Low | $0.022 | 4% | Yes |
Southdale (low) has the heaviest fire record of Kitchener’s neighbours, and Kitchener (low) matches or beats it.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Kitchener faces
What to do about the hazards Kitchener 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
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Kitchener’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 Kitchener 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 Kitchener floods.
- 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 Kitchener.
Questions about flooding and hazards in Kitchener
Is radon a problem in Kitchener?
Around Kitchener, 101 survey homes were tested and 4% came in over 200 Bq/m³, a guide to the area, not to any one home.
How is Kitchener’s Hazard risk Grade worked out?
When Canada’s grades arrive, Kitchener’s Risk will average earthquakes and radon and let wildfire only pull it down.
Is Kitchener at risk of wildfire?
No meaningful wildfire history near Kitchener: 0% of nearby land since 1986, band low.
Does Kitchener flood?
Kitchener’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 Kitchener?
In NRCan’s seismic model, Kitchener’s buildings lose $0.022 per $1,000 of value in an average year.
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).