Flood mapping exists for Lisgar: 1 on record, latest by Hamilton Conservation Authority
Around Lisgar, wildfire is practically absent from the record: 0% within 25 km since 1986, 0.000% a year. NRCan expects $0.044 of shaking damage a year per $1,000 of buildings in Lisgar, near the typical $0.030. About as many homes carry radon around Lisgar as elsewhere, 5% over the guideline where the typical town has 6.6%. Lisgar grades B+ for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Lisgar’s hazards
Four national sources, each read for Lisgar: earthquakes, radon, past fires and flood studies.
What Lisgar faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Lisgar: B+
Two inputs always count for Lisgar, 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. Small fires and grass fires are largely missing from the national burned-area record.
Little of the land around Lisgar has burned: 0% within 5 km, 0% within 25 km since 1986
Fires mapped since 1986 around where Lisgar’s residents live, and the fuel next to their homes.
Next to the typical Canadian town (0.000% a year), Lisgar’s 0.000% is in the low band.
Land that isn’t forest covers nearly all the ground around Lisgar: forest fuel is 0.2% within 5 km and 0.8% 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 871
Near-zero burning puts Lisgar 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.
Measured against 2,610 towns, Lisgar 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 Lisgar, from Hamilton Conservation Authority: 1 on the inventory
Flood studies whose area touches Lisgar, from NRCan’s inventory, each linked to its owner.
Hamilton Conservation Authority studied flooding in an area that includes Lisgar (2025); open its map to see which streets lie in a flood zone.
| Study | By | Year | Status |
|---|---|---|---|
| Red Hill Creek | Hamilton Conservation Authority | 2025 | final |
Towns with a flood study on file
69% of towns in Ontario have a flood study, more than Canada’s 58%; Lisgar has one too.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Listed, not scored: a flood study proves a map exists, not that Lisgar 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.
Expected shaking damage in Lisgar: $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.
Earthquake losses in Lisgar, $0.044 per $1,000, are in line with the typical $0.030 (1.5 times).
Shaking damage a year per $1,000 of building value
The median in Ontario is $0.043; Lisgar, at $0.044, is right beside it, and Alexandria tops the list 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.
More earthquake risk than most: only 32% of Canada’s 2,611 towns are above Lisgar.
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).
The loss is to Lisgar’s buildings alone, from ground shaking; infrastructure and secondary hazards are left out.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean). · Data for earthquake risk covers the city of Hamilton
Radon about average around Lisgar: 5% over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Area-wide: radon tests, counted over the City of Hamilton Health Unit
Around Lisgar, 5% of tested homes topped the guideline, near the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Lisgar’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.
A middling share of high tests puts Lisgar with 37% of Canada’s 2,611 towns, below 26% of them.
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.
The survey sampled homes around Lisgar; it can’t tell you your basement’s level.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Lisgar
Alerts for Lisgar 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 Lisgar 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 Lisgar
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Lisgar | Low | $0.044 | 5% | Yes |
| Berrisfield 3,773 · 0.6 km | Low | $0.044 | 5% | Yes |
| Quinndale 3,621 · 1.2 km | Low | $0.044 | 5% | Yes |
| Huntington 5,024 · 1.3 km | Low | $0.044 | 5% | Yes |
| Hampton Heights 3,498 · 1.5 km | Low | $0.044 | 5% | None listed |
| Lawfield 6,021 · 1.8 km | Low | $0.044 | 5% | None listed |
| Templemead 4,188 · 1.8 km | Low | $0.044 | 5% | Yes |
None of the places around has more fire nearby than Lisgar (low); Berrisfield comes closest (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Lisgar faces
What to do about the hazards Lisgar 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
- 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 Lisgar.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Lisgar’s figure is its subdivision’s.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Lisgar takes its 2007 health region’s share.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Lisgar’s homes since 1986, a history of fire that may lower Risk but never raises it.
Questions about flooding and hazards in Lisgar
Is radon a problem in Lisgar?
In Health Canada’s survey, 5% of 100 homes tested in Lisgar’s area were above 200 Bq/m³, though only a test tells you about one house.
How big is the earthquake risk in Lisgar?
Expected earthquake damage in Lisgar comes to $0.044 a year for each $1,000 that buildings are worth.
How is Lisgar’s Hazard risk Grade worked out?
Lisgar grades B+ for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Is Lisgar at risk of wildfire?
No meaningful wildfire history near Lisgar: 0% of nearby land since 1986, band low.
Does Lisgar flood?
The inventory lists a study touching Lisgar; 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).