Photo: AndrewEnns · CC BY-SA 3.0Hazard risk in Okanagan Falls is higher than in 98% of Canadian towns
Wildfire is a real hazard for Okanagan Falls: 21% of the land within 25 km has burned since 1986, 0.53% a year, in the high band. Earthquake risk in Okanagan Falls is ordinary: NRCan’s model puts building losses at $0.017 a year per $1,000 of value, close to the typical town’s $0.030. More homes than usual carry radon here, 17% over the guideline where the typical town has 6.6%. Okanagan Falls grades D− for hazard risk, with wildfire counted against it.
What stands out about Okanagan Falls’s hazards
For Okanagan Falls, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Okanagan Falls faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Okanagan Falls grades D− for hazard risk
Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Okanagan Falls with little fire nearby would get no credit for it.
Its place: #249 of 254 in British Columbia and #2,574 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.
A high wildfire band for Okanagan Falls: 40% within 5 km, 21% within 25 km
Fires mapped since 1986 around where Okanagan Falls’ residents live, and the fuel next to their homes.
At 0.53% of the land a year, Okanagan Falls’ burn rate is high, many times the typical Canadian town’s 0.000%.
The nearer ring around Okanagan Falls is less wooded (25% forest fuel) than the land out to 25 km (52%).
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
Okanagan Falls ranks 6th of the 255 towns in British Columbia for burn rate, at 0.53% 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.
Just 1.9% of Canada’s 2,610 towns burn fast enough for the high band where Okanagan Falls sits; 0.2% 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.
Okanagan Falls is on the flood map inventory: 1 study, by Okanagan Basin Water Board
Flood studies whose area touches Okanagan Falls, from NRCan’s inventory, each linked to its owner.
Okanagan Basin Water Board studied flooding in an area that includes Okanagan Falls (2020); open its map to see which streets lie in a flood zone.
| Study | By | Year | Status |
|---|---|---|---|
| Okanagan Mainstem Floodplain Mapping Project | Okanagan Basin Water Board | 2020 | final |
Towns with a flood study on file
Its flood study puts Okanagan Falls with 76% of towns in British Columbia; Canada’s share 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 Okanagan Falls 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.
Ordinary seismic risk in Okanagan Falls: $0.017 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.
0.6 times the typical $0.030: Okanagan Falls’ $0.017 is ordinary.
Shaking damage a year per $1,000 of building value
The typical town in British Columbia expects $0.36 a year in shaking damage; Okanagan Falls expects less, $0.017, and Duncan the most, $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.
Most of Canada’s 2,611 towns (70%) face more earthquake damage than Okanagan Falls.
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 Okanagan Falls.
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 Okanagan Falls are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Shared with the rest of the Okanagan health region: radon tests
Okanagan Falls’ 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
Okanagan Falls’ 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.
One test in ten or more tops the guideline around Okanagan Falls, as in 22% of Canada’s 2,611 towns; 4.6% go 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.
Health Canada advises testing every home, Okanagan Falls’ included, whatever the area’s figure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Where to get warnings in Okanagan Falls
Alerts for Okanagan Falls 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. |
Fire danger and active fires near Okanagan Falls are mapped daily by the Canadian Wildland Fire Information System; evacuation orders come from the municipality or province.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Okanagan Falls
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Okanagan Falls | High | $0.017 | 17% | Yes |
| Electoral Area I, Okanagan-Similkameen 2,372 · 3.1 km | High | $0.017 | 17% | Yes |
| Penticton 1 2,147 · 13 km | High | $0.014 | 17% | Yes |
| Penticton 39,068 · 13 km | High | $0.025 | 17% | Yes |
| Electoral Area C, Okanagan-Similkameen 4,103 · 16 km | High | $0.021 | 17% | Yes |
Electoral Area C, Okanagan-Similkameen burns a little more than Okanagan Falls, 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 Okanagan Falls faces
What to do about the hazards Okanagan Falls faces, and what to ask before you buy.
- 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
- 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 Okanagan Falls.
- Radon is a survey. About 14,000 homes were tested across Canada in 2009–2011, and the share over the guideline for Okanagan Falls is its health region’s, the survey’s design unit.
- Flood studies aren’t flood zones. NRCan’s inventory says where flood mapping exists, not where water goes; the map’s owner is the authority for Okanagan Falls.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Okanagan Falls’ included.
Questions about flooding and hazards in Okanagan Falls
How big is the earthquake risk in Okanagan Falls?
About $0.017 a year per $1,000 of building value, NRCan’s long-run expectation for Okanagan Falls.
Is radon a problem in Okanagan Falls?
Around Okanagan Falls, 109 survey homes were tested and 17% came in over 200 Bq/m³, a guide to the area, not to any one home.
Is Okanagan Falls at risk of wildfire?
More than most Canadian towns; Okanagan Falls’ high band rests on 21% of nearby land burned since 1986 (most recently 2025).
How is Okanagan Falls’s Hazard risk Grade worked out?
Okanagan Falls grades D− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Does Okanagan Falls flood?
There is flood mapping for Okanagan Falls on the national inventory, each study linked to its owner’s map, none of them 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).