Hazards in Glenbrook: wildfire low, radon over the guideline in 8.1% of tested homes
Wildfire barely registers for Glenbrook, at 0% of the land within 25 km since 1986 (0.000% a year). Shaking is about as much of a worry in Glenbrook as in most places, at $0.023 a year per $1,000 of building value ($0.030 typical). Hazard risk gives Glenbrook a grade of B+, from earthquakes and radon alone.
What stands out about Glenbrook’s hazards
Four national sources, each read for Glenbrook: earthquakes, radon, past fires and flood studies.
What Glenbrook faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Glenbrook: B+
Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Glenbrook with little fire nearby would get no credit for it.
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.
Little of the land around Glenbrook has burned: 0% within 5 km, 0% within 25 km since 1986
Past fire around Glenbrook’s homes, from the national burned-area record, with the fuel within 5 km.
Low: the land around Glenbrook burns at 0.000% a year, where the typical Canadian town sees 0.000%.
The closest burn since 1986 lies 7.9 km from Glenbrook’s homes, none within 5 km.
Forest fuel is scarce around Glenbrook: 2.1% of the land within 5 km, 2.6% 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 Alberta · highest of 478
Wainwright has the highest burn rate in Alberta, 1.43% a year; around Glenbrook, as around 386 of the 478 towns, it rounds to zero.
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%), Glenbrook 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.
No flood study is listed for Glenbrook
What Canada’s Flood Map Inventory lists for Glenbrook: who studied flooding and where to see their maps.
The inventory has nothing for Glenbrook, but a local or conservation-authority map may still exist.
Towns with a flood study on file
Flood maps are thinner in Alberta, 46% of towns against 58% nationally, and Glenbrook has none.
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 Glenbrook 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.”
Expected shaking damage in Glenbrook: $0.023 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
At $0.023 per $1,000, Glenbrook’s earthquake risk is about the typical Canadian town’s ($0.030; 0.8 times).
Behind earthquake risk sits data gathered across the city of Calgary, with Glenbrook one part of it.
Shaking damage a year per $1,000 of building value
Above the middle in Alberta: Glenbrook’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.
Neither high nor low for Canada: 54% of the 2,611 towns expect more damage than Glenbrook.
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).
Roads, pipes and bridges aren’t in Glenbrook’s figure, nor landslides or tsunami: it is buildings and shaking.
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 Glenbrook: 8.1% of area homes over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Around Glenbrook, 8.1% of tested homes topped the guideline, near the typical Canadian town’s 6.6%. For radon tests, the only official count covers all of the Calgary Health Region, Glenbrook included.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon around Glenbrook 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.
A middling share of high tests puts Glenbrook 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 Glenbrook; 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 Glenbrook
Alerts for Glenbrook 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. |
Fire danger and active fires near Glenbrook are mapped daily by the Canadian Wildland Fire Information System; evacuation orders come from the municipality or province.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Glenbrook’s neighbours compare on hazards
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Glenbrook | Low | $0.023 | 8.1% | None listed |
| Signal Hill 13,293 · 1.2 km | Low | $0.023 | 8.1% | Yes |
| Rosscarrock 3,862 · 1.5 km | Low | $0.023 | 8.1% | Yes |
| Glamorgan 6,479 · 1.5 km | Low | $0.023 | 8.1% | None listed |
| Westgate 3,139 · 1.6 km | Low | $0.023 | 8.1% | Yes |
| Killarney/Glengarry 7,935 · 1.7 km | Low | $0.023 | 8.1% | None listed |
| Currie Barracks 7,342 · 2.5 km | Low | $0.023 | 8.1% | None listed |
The neighbour with the most fire is Signal Hill (low), still no more than Glenbrook (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Glenbrook faces
What to do about the hazards Glenbrook 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?
- Ask the municipality for flood maps.
- Are flood and wildfire insured?
What this data can and can’t tell you
- Flood studies aren’t flood zones. NRCan’s inventory says where flood mapping exists, not where water goes; the map’s owner is the authority for Glenbrook.
- Earthquakes are modelled. Shaking damage is modelled from the ground, the buildings and the odds of each quake, and published for whole subdivisions such as Glenbrook’s.
- Wildfire counts one way. The wildfire figure is the share of land within 25 km of Glenbrook’s homes burned each year from 1986 to 2025, past fire rather than a forecast, and it can only lower Risk.
- Radon is a survey. About 14,000 homes were tested across Canada in 2009–2011, and the share over the guideline for Glenbrook is its health region’s, the survey’s design unit.
Questions about flooding and hazards in Glenbrook
Is radon a problem in Glenbrook?
Around Glenbrook, 86 survey homes were tested and 8.1% came in over 200 Bq/m³, a guide to the area, not to any one home.
Does Glenbrook flood?
With 0 studies on the inventory, Glenbrook’s flood risk is unmapped nationally; check with the municipality before buying.
How is Glenbrook’s Hazard risk Grade worked out?
Glenbrook grades B+ for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Is Glenbrook at risk of wildfire?
Fire has reached 0% of the land around Glenbrook since 1986 (last in 2014); at low, it neither helps nor hurts the grade.
How big is the earthquake risk in Glenbrook?
In NRCan’s seismic model, Glenbrook’s buildings lose $0.023 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).