Photo: Ymblanter · CC BY-SA 4.0Earthquakes are Electoral Area A, Cowichan Valley’s biggest hazard: $0.75 of damage a year per $1,000 of buildings, 25 times the norm
Fire seldom reaches Electoral Area A, Cowichan Valley: since 1986, 0.2% of the land within 25 km has burned (0.004% a year). In Health Canada’s survey, just 0.9% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Hazard risk gives Electoral Area A, Cowichan Valley a grade of B−; its wildfire band pulls it down.
What stands out about Electoral Area A, Cowichan Valley’s hazards
Four national sources, each read for Electoral Area A, Cowichan Valley: earthquakes, radon, past fires and flood studies.
What Electoral Area A, Cowichan Valley faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Electoral Area A, Cowichan Valley grades B− for hazard risk
Seismic risk and radon set Electoral Area A, Cowichan Valley’s grade, wildfire can drag it down, and flood mapping stays out of it.
Its place: #133 of 254 in British Columbia and #1,664 of 2,589 Canadian towns.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. Small fires and grass fires are largely missing from the national burned-area record.
Few fires near Electoral Area A, Cowichan Valley: 0.1% within 5 km, 0.2% within 25 km
Past fire around Electoral Area A, Cowichan Valley’s homes, from the national burned-area record, with the fuel within 5 km.
The yearly burn rate around Electoral Area A, Cowichan Valley is 0.004%, low beside 0.000% for the typical Canadian town.
Forest thickens with distance from Electoral Area A, Cowichan Valley: 64% of the land within 5 km, 71% 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
Electoral Area A, Cowichan Valley ranks 144th of the 255 towns in British Columbia for burn rate (0.004% a year), in the lower half; Oliver leads 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.
Electoral Area A, Cowichan Valley is in the low band with 92% of Canada’s 2,610 towns; 7.5% sit in moderate or 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.
Capital Regional District has mapped flooding for Electoral Area A, Cowichan Valley (1 study)
What Canada’s Flood Map Inventory lists for Electoral Area A, Cowichan Valley: who studied flooding and where to see their maps.
One study on the inventory touches Electoral Area A, Cowichan Valley, Capital Regional District’s from 2021, and its area can be large, so it says a map exists, not that the town floods.
| Study | By | Year | Status |
|---|---|---|---|
| Capital Regional Coastal Flood Inundation Mapping Project | Capital Regional District | 2021 | final |
Towns with a flood study on file
Its flood study puts Electoral Area A, Cowichan Valley 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.
Nothing here counts toward Risk; the studies are pointers to the maps their owners keep for Electoral Area A, Cowichan Valley.
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.
Earthquakes cost buildings in Electoral Area A, Cowichan Valley $0.75 per $1,000 a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
Roughly 25 times the typical $0.030: Electoral Area A, Cowichan Valley’s $0.75 marks real seismic exposure.
Shaking damage a year per $1,000 of building value
At $0.75, Electoral Area A, Cowichan Valley is above the typical town in British Columbia ($0.36); Duncan has the most 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.
Electoral Area A, Cowichan Valley is in the top tenth of Canada’s 2,611 towns for earthquake risk; 0.5% rank higher.
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).
The loss is to Electoral Area A, Cowichan Valley’s buildings alone, from ground shaking; infrastructure and secondary hazards are left out.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Radon runs low around Electoral Area A, Cowichan Valley: 0.9% of tested homes over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Radon runs below the typical Canadian town (6.6%) in Electoral Area A, Cowichan Valley’s area, at 0.9%. For radon tests, the only official count covers all of the Central Vancouver Island health region, Electoral Area A, Cowichan Valley included.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Against the typical town in British Columbia (1.8%), the area around Electoral Area A, Cowichan Valley has fewer high tests: 0.9%.
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 Electoral Area A, Cowichan Valley’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.
The share describes the area, not a house: in Electoral Area A, Cowichan Valley as anywhere, test to be sure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Electoral Area A, Cowichan Valley
Environment and Climate Change Canada issues the weather alerts for Electoral Area A, Cowichan Valley; 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. |
In fire season, check CWFIS for danger and active fires around Electoral Area A, Cowichan Valley, and listen to local authorities for orders.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Electoral Area A, Cowichan Valley
Wildfire band, earthquake risk, radon and flood studies for each place nearby.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Electoral Area A, Cowichan Valley | Low | $0.75 | 0.9% | Yes |
| Cobble Hill 5,074 · 6.0 km | Low | $0.68 | 0.9% | None listed |
| Shawnigan 9,903 · 6.6 km | Low | $0.57 | 0.9% | Yes |
| North Saanich 12,986 · 9.5 km | Low | $0.73 | 1.8% | Yes |
| Sidney 13,445 · 11 km | Low | $0.76 | 1.8% | Yes |
| Cowichan Bay 3,713 · 11 km | Low | $1.08 | 0.9% | Yes |
| Central Saanich 18,184 · 12 km | Low | $0.86 | 1.8% | Yes |
Shawnigan burns a little more than Electoral Area A, Cowichan Valley, in the same low band (low here).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Electoral Area A, Cowichan Valley faces
Practical steps for Electoral Area A, Cowichan Valley’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?
- Check the address on the flood map.
- Are flood and wildfire insured?
- Is earthquake cover included?
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 Electoral Area A, Cowichan Valley without grading them.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Electoral Area A, Cowichan Valley’s homes since 1986, a history of fire that may lower Risk but never raises it.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Electoral Area A, Cowichan Valley’s figure is its subdivision’s.
- 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 Electoral Area A, Cowichan Valley until then.
Questions about flooding and hazards in Electoral Area A, Cowichan Valley
How is Electoral Area A, Cowichan Valley’s Hazard risk Grade worked out?
Hazard risk gives Electoral Area A, Cowichan Valley B−, weighing earthquakes and radon and counting wildfire only against it.
Does Electoral Area A, Cowichan Valley flood?
A flood study covers Electoral Area A, Cowichan Valley on Canada’s Flood Map Inventory; open the owner’s map to check a street, since flood isn’t graded.
Is radon a problem in Electoral Area A, Cowichan Valley?
The area’s survey found 0.9% of 109 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Electoral Area A, Cowichan Valley.
How big is the earthquake risk in Electoral Area A, Cowichan Valley?
In NRCan’s seismic model, Electoral Area A, Cowichan Valley’s buildings lose $0.75 per $1,000 of value in an average year.
Is Electoral Area A, Cowichan Valley at risk of wildfire?
Some, but Electoral Area A, Cowichan Valley’s low band (0.2% of nearby land burned since 1986, latest 2024) is short of the level that counts.
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).