Flood mapping exists for Corman: 1 on record, latest by Hamilton Conservation Authority
No wildfire is mapped within 25 km of Corman’s homes since 1986 (0% of the land, 0.000% a year). NRCan expects $0.044 of shaking damage a year per $1,000 of buildings in Corman, near the typical $0.030. Radon around Corman is ordinary for Canada: 5% of tested homes over the guideline (6.6% typical). Hazard risk gives Corman a grade of B+, from earthquakes and radon alone.
What stands out about Corman’s hazards
For Corman, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Corman faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Corman: B+
Two inputs always count for Corman, earthquakes and radon; the third, wildfire, counts only against a town.
Its place: #494 of 866 in Ontario and #1,255 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 Corman has burned: 0% within 5 km, 0% within 25 km since 1986
Fires mapped since 1986 around where Corman’s residents live, and the fuel next to their homes.
Low: the land around Corman burns at 0.000% a year, where the typical Canadian town sees 0.000%.
With 0.1% forest fuel within 5 km and 0.7% within 25 km, the land around Corman gives a fire little to burn.
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 Corman 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.
Like most of Canada’s 2,610 towns (92%), Corman is in the low band, with a burn rate of zero to three decimals; 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 Corman, from Hamilton Conservation Authority: 1 on the inventory
Flood studies whose area touches Corman, from NRCan’s inventory, each linked to its owner.
A 2025 study by Hamilton Conservation Authority covers Corman, and its map, not the inventory, shows the zones.
| Study | By | Year | Status |
|---|---|---|---|
| Red Hill Creek | Hamilton Conservation Authority | 2025 | final |
Towns with a flood study on file
Its flood study puts Corman 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.
The grade leaves flood out, since a study area says nothing about how many of Corman’s homes are at risk.
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.
Expected shaking damage in Corman: $0.044 a year per $1,000
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
Corman’s $0.044 is close to the typical town’s $0.030 (1.5 times as much).
For earthquake risk, the only official count covers all of the city of Hamilton, Corman included.
Shaking damage a year per $1,000 of building value
About level with the typical town in Ontario: Corman’s $0.044 against $0.043; Alexandria reaches $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 32% of Canada’s 2,611 towns are above Corman.
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 Corman.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Some radon around Corman: 5% of area homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Corman’s area sits close to the typical Canadian town: 5% over the guideline, against 6.6%. Corman shares its radon tests numbers with the rest of the City of Hamilton Health Unit.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Corman’s area, at 5%, is above the median in Ontario (4%).
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Corman is in the 5–10% band with 37% of Canada’s 2,611 towns; 26% 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.
Neighbouring homes in Corman 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 Corman
Environment and Climate Change Canada issues the weather alerts for Corman; 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. |
Smoke and fire warnings for Corman come through Environment Canada and Alert Ready; the fire map is CWFIS’s.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Corman’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Corman | Low | $0.044 | 5% | Yes |
| Kentley 4,007 · 1.0 km | Low | $0.044 | 5% | Yes |
| Battlefield 6,531 · 1.2 km | Low | $0.044 | 5% | Yes |
| Vincent 10,011 · 1.4 km | Low | $0.044 | 5% | Yes |
| Red Hill 4,540 · 1.7 km | Low | $0.044 | 5% | Yes |
| Glenview West 3,431 · 1.7 km | Low | $0.044 | 5% | Yes |
| Mcquesten West 6,349 · 1.8 km | Low | $0.044 | 5% | Yes |
The neighbour with the most fire is Kentley (low), still no more than Corman (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Corman faces
What to do about the hazards Corman 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
- 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 Corman.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Corman’s included.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Corman takes its 2007 health region’s share.
- 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 Corman.
Questions about flooding and hazards in Corman
Is Corman at risk of wildfire?
No meaningful wildfire history near Corman: 0% of nearby land since 1986, band low.
How is Corman’s Hazard risk Grade worked out?
Hazard risk gives Corman B+, weighing earthquakes and radon and counting wildfire only against it.
Is radon a problem in Corman?
In Health Canada’s survey, 5% of 100 homes tested in Corman’s area were above 200 Bq/m³, though only a test tells you about one house.
How big is the earthquake risk in Corman?
Expected earthquake damage in Corman comes to $0.044 a year for each $1,000 that buildings are worth.
Does Corman flood?
The inventory lists a study touching Corman; whether a given street floods is on that map, not in the 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).