Photo: Original uploader was Fawcett5 at en.wikipedia Later version(s) were uploaded by Peteforsyth at en.wikipedia . · Public domainPenticton faces more hazards than 98% of Canadian towns
Fire is a regular visitor: 19% of the land within 25 km of Penticton has burned since 1986 (0.48% a year). Shaking is about as much of a worry in Penticton as in most places, at $0.025 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 Penticton a grade of D−; its wildfire band pulls it down.
What stands out about Penticton’s hazards
For Penticton, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Penticton faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Penticton: D−
Seismic risk and radon set Penticton’s grade, wildfire can drag it down, and flood mapping stays out of it.
Its place: #244 of 254 in British Columbia and #2,568 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 high wildfire band for Penticton: 36% within 5 km, 19% within 25 km
Fires mapped since 1986 around where Penticton’s residents live, and the fuel next to their homes.
High: the land around Penticton burns at 0.48% a year, where the typical Canadian town sees 0.000%.
Within 5 km of Penticton, 24% of the land is forest fuel; widen the ring to 25 km and it is 57%.
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
At 0.48% a year, Penticton is near the top in British Columbia: 11th of 255, behind Oliver (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.
High is rare: 1.9% of Canada’s 2,610 towns, Penticton among them, with 0.2% higher still.
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 Penticton, from Okanagan Basin Water Board: 1 on the inventory
Flood studies whose area touches Penticton, from NRCan’s inventory, each linked to its owner.
For Penticton the inventory points to Okanagan Basin Water Board’s 2020 study, whose map is the one to check.
| Study | By | Year | Status |
|---|---|---|---|
| Okanagan Mainstem Floodplain Mapping Project | Okanagan Basin Water Board | 2020 | final |
Towns with a flood study on file
Flood maps are common in British Columbia: 76% of towns have one, against 58% nationally, and Penticton is among them.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Flood mapping is shown for Penticton to be opened and checked, never turned into a grade.
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.
Ordinary seismic risk in Penticton: $0.025 per $1,000 of buildings a year
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
Earthquake losses in Penticton, $0.025 per $1,000, are in line with the typical $0.030 (0.8 times).
Shaking damage a year per $1,000 of building value
Penticton’s $0.025 sits under the median in British Columbia, $0.36, and well under 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.
Around half of Canada’s 2,611 towns expect more shaking damage than Penticton (53%).
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 Penticton.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Test for radon in Penticton: 17% of area homes were over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Radon tests for the Okanagan health region
Penticton’s survey area reads 17% over the guideline, well past the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Penticton’s area, at 17%, is above the median in British Columbia (1.8%), and 2.8% of its tests passed 600 Bq/m³.
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, Penticton 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.
A low area share in Penticton 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 Penticton
Alerts for Penticton 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 Penticton 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 Penticton
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Penticton | High | $0.025 | 17% | Yes |
| Penticton 1 2,147 · 4.4 km | High | $0.014 | 17% | Yes |
| Electoral Area F, Okanagan-Similkameen 2,149 · 8.3 km | High | $0.019 | 17% | Yes |
| Electoral Area I, Okanagan-Similkameen 2,372 · 11 km | High | $0.017 | 17% | Yes |
| Naramata 2,077 · 12 km | High | $0.012 | 17% | Yes |
| Okanagan Falls 4,002 · 13 km | High | $0.017 | 17% | Yes |
| Summerland 12,343 · 15 km | High | $0.018 | 17% | Yes |
Electoral Area I, Okanagan-Similkameen burns a little more than Penticton, in the same high band (high here).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Penticton faces
Practical steps for Penticton’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
- 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 Penticton sits in.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Penticton’s included.
- 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 Penticton floods.
- 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 Penticton.
Questions about flooding and hazards in Penticton
How big is the earthquake risk in Penticton?
Expected earthquake damage in Penticton comes to $0.025 a year for each $1,000 that buildings are worth.
How is Penticton’s Hazard risk Grade worked out?
Penticton’s Hazard risk grade is D−, built on earthquakes and radon with a one-sided wildfire input.
Is radon a problem in Penticton?
The area’s survey found 17% of 109 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Penticton.
Does Penticton flood?
Penticton’s area has been studied for flooding, and the owner’s map shows which streets lie in a zone; the grade leaves flood out.
Is Penticton at risk of wildfire?
Wildfire is Penticton’s main hazard, band high: 19% of the land within 25 km burned between 1986 and 2025.
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).