Wildfire low, radon 8.1%: how Coach Hill stands on hazards
Burn scars are few around Coach Hill, with 0% of the land within 25 km touched by fire since 1986 (0.000% a year). NRCan expects $0.023 of shaking damage a year per $1,000 of buildings in Coach Hill, near the typical $0.030. Coach Hill grades B+ for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Coach Hill’s hazards
For Coach Hill, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Coach Hill faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Coach Hill grades B+ for hazard risk
For Coach Hill, 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: 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.
Wildfire is rare near Coach Hill: 0% of the land within 25 km burned since 1986, 0.1% within 5 km
Past fire around Coach Hill’s homes, from the national burned-area record, with the fuel within 5 km.
Next to the typical Canadian town (0.000% a year), Coach Hill’s 0.000% is in the low band.
Forest fuel is scarce around Coach Hill: 0.3% 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
To three decimals the burn rate around Coach Hill is zero, as for 386 of the 478 towns in Alberta, while Wainwright reaches 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.
Coach Hill shares the low band with 92% of Canada’s 2,610 towns, its burn rate rounding to nothing; 7.5% burn faster.
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.
The flood map inventory lists nothing for Coach Hill
What Canada’s Flood Map Inventory lists for Coach Hill: who studied flooding and where to see their maps.
The inventory has nothing for Coach Hill, but a local or conservation-authority map may still exist.
Towns with a flood study on file
No study touches Coach Hill; in Alberta, 46% of towns have one, below Canada’s 58%.
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 Coach Hill 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.”
Expected shaking damage in Coach Hill: $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, Coach Hill’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 Coach Hill one part of it.
Shaking damage a year per $1,000 of building value
At $0.023, Coach Hill is above the typical town in Alberta ($0.013); Black Diamond has the most 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 Coach Hill (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).
What a quake does after the shaking, fire, landslides, tsunami, falls outside NRCan’s figure for Coach Hill.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
8.1% of homes tested around Coach Hill are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Near the middle for radon: Coach Hill’s area 8.1%, the typical Canadian town 6.6%. For radon tests, the only official count covers all of the Calgary Health Region, Coach Hill included.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Around Coach Hill, 8.1% of tests topped the guideline, about the same as the typical town in Alberta (7.5%).
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Between 5% and 10% of tests over the guideline: Coach Hill, and 37% of Canada’s 2,611 towns; 26% are 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.
A low area share in Coach Hill 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 Coach Hill
Alerts for Coach Hill 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 Coach Hill 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 Coach Hill
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Coach Hill | Low | $0.023 | 8.1% | None listed |
| Patterson 4,169 · 0.7 km | Low | $0.023 | 8.1% | Yes |
| Strathcona Park 8,680 · 1.3 km | Low | $0.023 | 8.1% | None listed |
| West Springs 11,632 · 1.6 km | Low | $0.023 | 8.1% | None listed |
| Montgomery 4,456 · 1.8 km | Low | $0.023 | 8.1% | Yes |
| Aspen Woods 9,606 · 2.4 km | Low | $0.023 | 8.1% | None listed |
| Westgate 3,139 · 2.5 km | Low | $0.023 | 8.1% | Yes |
Nowhere around Coach Hill burns more: Patterson, the closest rival, is low to its low.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Coach Hill faces
Practical steps for Coach Hill’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?
- Ask the municipality for flood maps.
- 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, Coach Hill’s included.
- 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 Coach Hill.
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Coach Hill without grading them.
- Radon is a survey. Radon figures pool the survey’s home tests by area: postal areas once their boundaries arrive, the 2007 health region around Coach Hill until then.
Questions about flooding and hazards in Coach Hill
How is Coach Hill’s Hazard risk Grade worked out?
Coach Hill’s Hazard risk grade is B+, built on earthquakes and radon with a one-sided wildfire input.
Does Coach Hill flood?
The inventory has 0 studies for Coach Hill, and an empty list isn’t a clean bill: the municipality holds any flood maps.
How big is the earthquake risk in Coach Hill?
In NRCan’s seismic model, Coach Hill’s buildings lose $0.023 per $1,000 of value in an average year.
Is radon a problem in Coach Hill?
The area’s survey found 8.1% of 86 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Coach Hill.
Is Coach Hill at risk of wildfire?
Some, but Coach Hill’s low band (0% of nearby land burned since 1986, latest 2014) is short of the level that counts.
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).