Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainBridlewood is on Canada’s flood inventory: 1 listed, led by Government of Alberta
Wildfire is rare near Bridlewood: 0% of the land within 25 km has burned since 1986, a burn rate of 0.001% a year. Seismic risk in Bridlewood sits near the middle: $0.023 of expected damage per $1,000 of buildings a year, the typical town $0.030. About as many homes carry radon around Bridlewood as elsewhere, 8.1% over the guideline where the typical town has 6.6%. Bridlewood grades B+ for hazard risk, with wildfire counted against it.
What stands out about Bridlewood’s hazards
Four national sources, each read for Bridlewood: earthquakes, radon, past fires and flood studies.
What Bridlewood faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Bridlewood grades B+ for hazard risk
For Bridlewood, Risk will be the average of earthquakes and radon, with wildfire added only if it makes the average worse.
Its place: #282 of 474 in Alberta and #1,102 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.
Few fires near Bridlewood: 0.2% within 5 km, 0% within 25 km
Fires mapped since 1986 around where Bridlewood’s residents live, and the fuel next to their homes.
In a typical year 0.001% of the land near Bridlewood burns; the typical Canadian town sees 0.000%, and both are low.
Only 3.9% of the land within 25 km of Bridlewood is forest fuel, and 2.5% close in.
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 Alberta · highest of 478
The land around Bridlewood burns at 0.001% a year, the 79th highest rate of 478 towns in Alberta; Wainwright tops it at 1.43%.
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.
Some fire is mapped around Bridlewood, but not enough to leave the low band, where 92% of Canada’s 2,610 towns are; 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.
Government of Alberta has mapped flooding for Bridlewood (1 study)
Flood studies whose area touches Bridlewood, from NRCan’s inventory, each linked to its owner.
One study on the inventory touches Bridlewood, Government of Alberta’s from 2025, and its area can be large, so it says a map exists, not that the town floods.
| Study | By | Year | Status |
|---|---|---|---|
| Pine Creek Flood Hazard Study | Government of Alberta | 2025 | final |
Towns with a flood study on file
Bridlewood is one of the 46% of towns in Alberta with a flood study on file, fewer than Canada’s 58%.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Nothing here counts toward Risk; the studies are pointers to the maps their owners keep for Bridlewood.
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 Bridlewood: $0.023 per $1,000 of buildings 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 Bridlewood’s ground: $0.023 against a typical $0.030, 0.8 times.
For earthquake risk, the only official count covers all of the city of Calgary, Bridlewood included.
Shaking damage a year per $1,000 of building value
Above the middle in Alberta: Bridlewood’s $0.023 against a median of $0.013, with Black Diamond highest at $0.048.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
Around half of Canada’s 2,611 towns expect more shaking damage than Bridlewood (54%).
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 Bridlewood’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).
Radon about average around Bridlewood: 8.1% 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 Calgary Health Region
Bridlewood’s area, at 8.1%, is close to the 6.6% of the typical Canadian town.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon around Bridlewood is ordinary for towns in Alberta: 8.1%, beside a median of 7.5%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
37% of Canada’s 2,611 towns share Bridlewood’s band of 5 to 10%; 26% sit 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.
One home in Bridlewood can be high while next door is low; a three-month test settles it.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Bridlewood
Environment and Climate Change Canada issues the weather alerts for Bridlewood; 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 Bridlewood, and listen to local authorities for orders.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Bridlewood’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Bridlewood | Low | $0.023 | 8.1% | Yes |
| Somerset 8,416 · 2.0 km | Low | $0.023 | 8.1% | Yes |
| Evergreen 19,988 · 2.1 km | Low | $0.023 | 8.1% | None listed |
| Shawnessy 9,696 · 2.4 km | Low | $0.023 | 8.1% | Yes |
| Millrise 6,754 · 3.0 km | Low | $0.023 | 8.1% | None listed |
| Silverado 9,663 · 3.3 km | Low | $0.023 | 8.1% | Yes |
| Fish Creek Park 9,045 · 3.5 km | Low | $0.023 | 8.1% | Yes |
Bridlewood’s low band tops its neighbours; Evergreen is next (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Bridlewood faces
Practical steps for Bridlewood’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 Bridlewood.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Bridlewood’s homes since 1986, a history of fire that may lower Risk but never raises it.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Bridlewood takes its 2007 health region’s share.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Bridlewood’s figure is its subdivision’s.
Questions about flooding and hazards in Bridlewood
How is Bridlewood’s Hazard risk Grade worked out?
Bridlewood grades B+ for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Is radon a problem in Bridlewood?
8.1% of the 86 homes Health Canada tested around Bridlewood topped the guideline; your own house needs its own test.
Is Bridlewood at risk of wildfire?
Not much by Canadian standards: Bridlewood’s band is low, with 0% of the land within 25 km burned since 1986 (last in 2021), so wildfire doesn’t change its grade.
Does Bridlewood flood?
The inventory lists a study touching Bridlewood; whether a given street floods is on that map, not in the grade.
How big is the earthquake risk in Bridlewood?
About $0.023 a year per $1,000 of building value, NRCan’s long-run expectation for Bridlewood.
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).