Photo: James Blake aka Webgeer at en.wikipedia · CC BY 2.0Powell River has one of Canada’s highest earthquake risks: $0.38 a year per $1,000, 13 times the typical town’s
For Powell River, wildfire history is close to nil: 0% of nearby land since 1986, 0.000% a year. In Health Canada’s survey, just 2.5% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Hazard risk gives Powell River a grade of C+, from earthquakes and radon alone.
What stands out about Powell River’s hazards
For Powell River, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Powell River faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Powell River: C+
For Powell River, Risk will be the average of earthquakes and radon, with wildfire added only if it makes the average worse.
Its place: #194 of 254 in British Columbia and #1,819 of 2,589 Canadian towns.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Little of the land around Powell River has burned: 0% within 5 km, 0% within 25 km since 1986
Past fire around Powell River’s homes, from the national burned-area record, with the fuel within 5 km.
Low: the land around Powell River burns at 0.000% a year, where the typical Canadian town sees 0.000%.
Forest thickens with distance from Powell River: 71% of the land within 5 km, 87% 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 British Columbia · highest of 255
Fire has taken almost none of the land around Powell River, as for 7 of the 255 towns in British Columbia; Oliver tops the list at 0.98%.
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%), Powell River 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 Powell River
What Canada’s Flood Map Inventory lists for Powell River: who studied flooding and where to see their maps.
An empty entry for Powell River on the inventory isn’t proof of safety; ask locally for flood maps.
Towns with a flood study on file
Flood maps are common in British Columbia, 76% of towns against 58% nationally, but none in the inventory touches Powell River.
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 Powell River’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.”
Shaking is Powell River’s costliest hazard: $0.38 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Powell River’s $0.38 is about 12.6 times the typical town’s $0.030: it sits in one of Canada’s more active seismic zones.
Shaking damage a year per $1,000 of building value
Earthquake risk around Powell River ($0.38) matches the middle in British Columbia ($0.36), far from Duncan’s $1.33.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
Only 4.6% of Canada’s 2,611 towns expect more shaking damage than Powell River.
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 Powell River.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
2.5% of homes tested around Powell River are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Powell River’s area, at 2.5%, is below the 6.6% of the typical Canadian town, though any one home can still be high. Figures for radon tests are published for the North Shore/Coast Garibaldi health region as a whole, not for Powell River alone.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon runs higher around Powell River than in most towns in British Columbia: 2.5% against 1.8%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
63% of Canada’s 2,611 towns have a higher share of homes over 200 Bq/m³ than Powell River’s band, which holds 37%.
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.
Whatever Powell River’s area share, the reading that matters is your own home’s, over a winter.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Powell River
Environment and Climate Change Canada issues the weather alerts for Powell River; 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 Powell River, 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 Powell River
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Powell River | Low | $0.38 | 2.5% | None listed |
| Electoral Area B, qathet 1,714 · 4.7 km | Low | $0.22 | 2.5% | None listed |
| Electoral Area C, qathet 2,409 · 13 km | Low | $0.38 | 2.5% | None listed |
| Electoral Area D, qathet 1,221 · 19 km | Low | $0.22 | 2.5% | None listed |
The fire record around Electoral Area C, qathet is a touch heavier than Powell River’s, but the band is the same: low (here low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Powell River faces
Practical steps for Powell River’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.
- Drop, cover and hold on.
- Strap the water heater down.
- Keep 72 hours of supplies.
- Has it had a radon test?
- Ask the municipality for flood maps.
- Are flood and wildfire insured?
- Is earthquake cover included?
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 Powell River.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Powell River takes its 2007 health region’s share.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Powell River’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 Powell River.
Questions about flooding and hazards in Powell River
How is Powell River’s Hazard risk Grade worked out?
Hazard risk gives Powell River C+, weighing earthquakes and radon and counting wildfire only against it.
Is Powell River at risk of wildfire?
Very little by the national record: Powell River’s band is low, with 0% of the land within 25 km burned since 1986, so wildfire doesn’t change its grade.
Does Powell River flood?
No study on Canada’s Flood Map Inventory covers Powell River (0), which doesn’t mean it has never been mapped, so ask the municipality.
Is radon a problem in Powell River?
2.5% of the 81 homes Health Canada tested around Powell River topped the guideline; your own house needs its own test.
How big is the earthquake risk in Powell River?
NRCan’s model expects shaking to cost buildings in Powell River $0.38 a year for every $1,000 of their value, on average over many years.
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).