Photo: Thank you for visiting my page from Canada · CC BY 2.0Crescent Heights is on Canada’s flood inventory: 1 listed, led by Government of Alberta
The burned-area map is nearly blank around Crescent Heights, 0% within 25 km since 1986, 0.000% a year. For earthquakes Crescent Heights is middling, $0.023 a year per $1,000 against $0.030 for the typical town. Radon is about average around Crescent Heights: 8.1% of tested homes in the survey area topped the guideline, against 6.6% for the typical town. Hazard risk gives Crescent Heights a grade of B+, from earthquakes and radon alone.
What stands out about Crescent Heights’s hazards
For Crescent Heights, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Crescent Heights faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Crescent Heights: B+
Earthquake risk and radon make Crescent Heights’ grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
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 Crescent Heights: 0% of the land within 25 km burned since 1986, 0% within 5 km
Fires mapped since 1986 around where Crescent Heights’ residents live, and the fuel next to their homes.
Crescent Heights burns at 0.000% a year, low against 0.000% for the typical Canadian town.
The 5 km ring around Crescent Heights’ homes is clear of burns since 1986, the nearest 11 km out.
Only 0.7% of the land within 25 km of Crescent Heights is forest fuel, and 0% 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
Wainwright has the highest burn rate in Alberta, 1.43% a year; around Crescent Heights, 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.
Crescent Heights 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.
Government of Alberta has mapped flooding for Crescent Heights (1 study)
Flood studies whose area touches Crescent Heights, from NRCan’s inventory, each linked to its owner.
Government of Alberta studied flooding in an area that includes Crescent Heights (2025); open its map to see which streets lie in a flood zone.
| Study | By | Year | Status |
|---|---|---|---|
| Bow and Elbow River Flood Study | Government of Alberta | 2025 | final |
Towns with a flood study on file
Its flood study sets Crescent Heights apart in Alberta, where 46% of towns have one (Canada: 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 Crescent Heights 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 Crescent Heights: $0.023 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.
Nothing unusual about Crescent Heights’ ground: $0.023 against a typical $0.030, 0.8 times.
Shaking damage a year per $1,000 of building value
Above the middle in Alberta: Crescent Heights’ $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.
Crescent Heights sits mid-range among Canada’s 2,611 towns: 54% expect more shaking damage.
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 Crescent Heights.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean). · Earthquake risk: one figure for all of the city of Calgary
8.1% of homes tested around Crescent Heights are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Measured across the Calgary Health Region: radon tests
8.1% of tested homes around Crescent Heights were over the guideline, much like the typical Canadian town at 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
The typical town in Alberta has 7.5% over 200 Bq/m³; Crescent Heights’ area has 8.1%, much the same.
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 Crescent Heights’ 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.
Neighbouring homes in Crescent Heights can differ a lot; only a long-term test tells you about yours.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Crescent Heights
Alerts for Crescent Heights 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 Crescent Heights 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 Crescent Heights
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Crescent Heights | Low | $0.023 | 8.1% | Yes |
| Renfrew 6,685 · 1.0 km | Low | $0.023 | 8.1% | Yes |
| Eau Claire 3,733 · 1.2 km | Low | $0.023 | 8.1% | Yes |
| Bridgeland/Riverside 6,860 · 1.4 km | Low | $0.023 | 8.1% | Yes |
| Sunnyside 2,976 · 1.4 km | Low | $0.023 | 8.1% | Yes |
| Downtown East Village 3,524 · 1.6 km | Low | $0.023 | 8.1% | Yes |
| Rosedale 2,507 · 1.6 km | Low | $0.023 | 8.1% | Yes |
Nowhere around Crescent Heights burns more: Renfrew, 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 Crescent Heights faces
Practical steps for Crescent Heights’ 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. Flood studies cover areas of every size, which is why the page lists them for Crescent Heights without grading them.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Crescent Heights’ included.
- 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 Crescent Heights until then.
- 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 Crescent Heights.
Questions about flooding and hazards in Crescent Heights
Is radon a problem in Crescent Heights?
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 Crescent Heights.
Is Crescent Heights at risk of wildfire?
Some, but Crescent Heights’ low band (0% of nearby land burned since 1986, latest 2014) is short of the level that counts.
How is Crescent Heights’s Hazard risk Grade worked out?
Crescent Heights grades B+ for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
How big is the earthquake risk in Crescent Heights?
About $0.023 a year per $1,000 of building value, NRCan’s long-run expectation for Crescent Heights.
Does Crescent Heights flood?
A flood study covers Crescent Heights on Canada’s Flood Map Inventory; open the owner’s map to check a street, since flood isn’t graded.
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).