Photo: GerthMichael · CC BY-SA 3.0Princeton faces more hazards than 89% of Canadian towns
Fire reaches the land around Princeton now and then: 4.4% within 25 km since 1986 (0.11% a year), below the high band. Shaking is a bigger worry than in most places, at $0.069 a year per $1,000 of building value ($0.030 typical). Radon is higher than usual: 17% of tested homes in the survey area topped the guideline, against 6.6% for the typical town. Hazard risk gives Princeton a grade of D; its wildfire band pulls it down.
What stands out about Princeton’s hazards
For Princeton, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Princeton faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Princeton grades D for hazard risk
For Princeton, Risk will be the average of earthquakes and radon, with wildfire added only if it makes the average worse.
Its place: #227 of 254 in British Columbia and #2,464 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.
A moderate wildfire record for Princeton: 4.4% within 25 km burned, 0.5% within 5 km
Past fire around Princeton’s homes, from the national burned-area record, with the fuel within 5 km.
Moderate: the land around Princeton burns at 0.11% a year, where the typical Canadian town sees 0.000%.
Within 5 km of Princeton, 25% of the land is forest fuel; widen the ring to 25 km and it is 69%.
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
Princeton ranks 53rd of the 255 towns in British Columbia for burn rate, at 0.11% a year; Oliver leads with 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.
Only 5.4% of Canada’s 2,610 towns share the moderate band with Princeton, and 2.1% sit above it.
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.
A flood study covers Princeton, from Ministry of Environment and Climate Change Strategy: 1 on the inventory
What Canada’s Flood Map Inventory lists for Princeton: who studied flooding and where to see their maps.
Ministry of Environment and Climate Change Strategy studied flooding in an area that includes Princeton (1995); open its map to see which streets lie in a flood zone.
| Study | By | Year | Status |
|---|---|---|---|
| Similkameen River at Princeton Floodplain Mapping | Ministry of Environment and Climate Change Strategy | 1995 | final |
Towns with a flood study on file
Princeton is one of the 76% of towns in British Columbia with a flood study on file; across Canada it is 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 Princeton 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.
Shaking is Princeton’s costliest hazard: $0.069 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Princeton’s $0.069 is about 2.3 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
At $0.069, Princeton is below the typical town in British Columbia ($0.36); Duncan is highest at $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.
More earthquake risk than most: only 28% of Canada’s 2,611 towns are above Princeton.
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 Princeton.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
17% of homes tested around Princeton are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline. · Area-wide: radon tests, counted over the Okanagan health region
Radon runs above the typical Canadian town (6.6%) in Princeton’s area, at 17%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Around Princeton, 17% of tests were over 200 Bq/m³ and 2.8% over 600, against a median of 1.8% in British Columbia.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
The 10–20% band holds 22% of Canada’s 2,611 towns, Princeton among them; 4.6% rank above.
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.
Health Canada advises testing every home, Princeton’s included, whatever the area’s figure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Princeton
Alerts for Princeton 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 Princeton to phones; CWFIS shows the day’s fire danger.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Get ready for what Princeton faces
Practical steps for Princeton’s hazards, most pressing first.
- Clear needles and wood nearby.
- Keep a grab-and-go bag ready.
- In smoke, stay in; filter air.
- 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.
- Has it had a radon test?
- Check the address on the flood map.
- How close is the forest edge?
- Are flood and wildfire insured?
What this data can and can’t tell you
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Princeton’s census subdivision (a neighbourhood shows its city’s).
- Wildfire counts one way. For Princeton, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Princeton 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 Princeton until then.
Questions about flooding and hazards in Princeton
Is Princeton at risk of wildfire?
Not much by Canadian standards: Princeton’s band is moderate, with 4.4% of the land within 25 km burned since 1986 (last in 2025), so wildfire doesn’t change its grade.
Is radon a problem in Princeton?
17% of the 109 homes Health Canada tested around Princeton topped the guideline; your own house needs its own test.
How is Princeton’s Hazard risk Grade worked out?
Princeton’s Hazard risk grade is D, built on earthquakes and radon with a one-sided wildfire input.
How big is the earthquake risk in Princeton?
NRCan’s model expects shaking to cost buildings in Princeton $0.069 a year for every $1,000 of their value, on average over many years.
Does Princeton flood?
A flood study covers Princeton 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).