Hazard risk in Mayliewan is lower than in 98% of Canadian towns
Fire has left almost no mark near Mayliewan: 0% of the land within 25 km since 1986, 0.000% a year. Seismic risk runs low: $0.013 of expected damage per $1,000 of buildings a year, the typical town $0.030. Fewer homes than usual carry radon here, 1.4% over the guideline where the typical town has 6.6%. Mayliewan grades A+ for hazard risk, with wildfire counted against it.
What stands out about Mayliewan’s hazards
Four national sources, each read for Mayliewan: earthquakes, radon, past fires and flood studies.
What Mayliewan faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Mayliewan grades A+ for hazard risk
Seismic risk and radon set Mayliewan’s grade, wildfire can drag it down, and flood mapping stays out of it.
Its place: #11 of 474 in Alberta and #22 of 2,589 Canadian towns.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. The radon share rests on 73 home tests in the survey area, so a few homes move it. Small fires and grass fires are largely missing from the national burned-area record.
Little of the land around Mayliewan has burned: 0% within 5 km, 0% within 25 km since 1986
Past fire around Mayliewan’s homes, from the national burned-area record, with the fuel within 5 km.
Forty years of fire maps put Mayliewan at 0.000% a year, low next to the typical Canadian town’s 0.000%.
Little near Mayliewan’s homes can carry a forest fire; only 0% of the land within 5 km is forest fuel, and 0.3% 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
Near-zero burning puts Mayliewan with 386 of the 478 towns in Alberta, far below Wainwright 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.
Mayliewan 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 Mayliewan
What Canada’s Flood Map Inventory lists for Mayliewan: who studied flooding and where to see their maps.
There is no study for Mayliewan on the national flood inventory, which is far from complete.
Towns with a flood study on file
No study touches Mayliewan; 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.
The grade leaves flood out, since a study area says nothing about how many of Mayliewan’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.”
Earthquakes cost buildings in Mayliewan just $0.013 per $1,000 a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Shaking costs the typical town $0.030 a year; in Mayliewan it is only $0.013, 0.4 times as much.
Mayliewan doesn’t get its own earthquake risk figures; the ones here come from the city of Edmonton.
Shaking damage a year per $1,000 of building value
Typical for its province: Mayliewan at $0.013 beside a median in Alberta of $0.013, with Black Diamond on top 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.
Earthquakes cost less around Mayliewan than in 75% of Canada’s 2,611 towns.
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 model counts damage to Mayliewan’s buildings and their occupants from shaking only: not liquefaction, landslides, tsunami or fires after a quake.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
1.4% of homes tested around Mayliewan are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Mayliewan’s area, at 1.4%, is below the 6.6% of the typical Canadian town, though any one home can still be high. Nobody publishes radon tests for Mayliewan alone, so this card uses the figure for the Capital Health.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Fewer homes top the guideline around Mayliewan (1.4%) than in 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.
Under 5% puts Mayliewan with 37% of Canada’s 2,611 towns; 63% have more high tests.
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 Mayliewan 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 Mayliewan
Environment and Climate Change Canada issues the weather alerts for Mayliewan; 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. |
For fires near Mayliewan, the national fire information system maps danger and active fires daily; local authorities give any evacuation order.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Mayliewan
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Mayliewan | Low | $0.013 | 1.4% | None listed |
| Belle Rive 3,946 · 0.5 km | Low | $0.013 | 1.4% | None listed |
| Ozerna 4,216 · 0.9 km | Low | $0.013 | 1.4% | None listed |
| Crystallina Nera East 5,566 · 1.5 km | Low | $0.013 | 1.4% | None listed |
| Kilkenny 5,481 · 1.6 km | Low | $0.013 | 1.4% | None listed |
| Eaux Claires 3,334 · 1.6 km | Low | $0.013 | 1.4% | None listed |
| Evansdale 5,602 · 1.7 km | Low | $0.013 | 1.4% | None listed |
Nowhere around Mayliewan burns more: Belle Rive, 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 Mayliewan faces
Practical steps for Mayliewan’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
- Flood studies aren’t flood zones. A study’s area can be a whole watershed or province, so being on the inventory says a map exists, not that a home in Mayliewan floods.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Mayliewan’s figure is its subdivision’s.
- Radon is a survey. The radon share comes from about 14,000 long-term home tests in 2009–2011, pooled for now by the 2007 health region Mayliewan sits in.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Mayliewan’s homes since 1986, a history of fire that may lower Risk but never raises it.
Questions about flooding and hazards in Mayliewan
Does Mayliewan flood?
The inventory has 0 studies for Mayliewan, and an empty list isn’t a clean bill: the municipality holds any flood maps.
How is Mayliewan’s Hazard risk Grade worked out?
Hazard risk gives Mayliewan A+, weighing earthquakes and radon and counting wildfire only against it.
How big is the earthquake risk in Mayliewan?
In NRCan’s seismic model, Mayliewan’s buildings lose $0.013 per $1,000 of value in an average year.
Is radon a problem in Mayliewan?
The area’s survey found 1.4% of 73 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Mayliewan.
Is Mayliewan at risk of wildfire?
Hardly at all on record: 0% of the land within 25 km of Mayliewan since 1986, a low band, though small grass fires aren’t mapped.
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).