Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainA flood study covers Electoral Area E, Fraser Valley: 1 on the national inventory, the newest from Ministry of Environment and Climate Change Strategy
Little of the land around Electoral Area E, Fraser Valley has burned: 0.4% within 25 km since 1986, or 0.009% a year. Seismic risk runs high: $0.19 of expected damage per $1,000 of buildings a year, the typical town $0.030. In Health Canada’s survey, just 3% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Hazard risk gives Electoral Area E, Fraser Valley a grade of C+; its wildfire band pulls it down.
What stands out about Electoral Area E, Fraser Valley’s hazards
For Electoral Area E, Fraser Valley, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Electoral Area E, Fraser Valley faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Electoral Area E, Fraser Valley grades C+ for hazard risk
Two inputs always count for Electoral Area E, Fraser Valley, earthquakes and radon; the third, wildfire, counts only against a town.
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.
Little of the land around Electoral Area E, Fraser Valley has burned: 0.1% within 5 km, 0.4% within 25 km since 1986
Fires mapped since 1986 around where Electoral Area E, Fraser Valley’s residents live, and the fuel next to their homes.
The land within 25 km of Electoral Area E, Fraser Valley burns at 0.009% a year on average, the low band; the typical Canadian town: 0.000%.
Forest crowds in on Electoral Area E, Fraser Valley: 70% of the land within 5 km is forest fuel, more than the 58% 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 256
At 0.009% a year, Electoral Area E, Fraser Valley ranks 100th of the 256 towns in British Columbia; 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.
7.5% of Canada’s 2,610 towns burn fast enough to rank moderate or above; Electoral Area E, Fraser Valley stays low, with 92%.
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.
Electoral Area E, Fraser Valley is on the flood map inventory: 1 study, by Ministry of Environment and Climate Change Strategy
Flood studies whose area touches Electoral Area E, Fraser Valley, from NRCan’s inventory, each linked to its owner.
For Electoral Area E, Fraser Valley the inventory points to Ministry of Environment and Climate Change Strategy’s 1981 study, whose map is the one to check.
| Study | By | Year | Status |
|---|---|---|---|
| Chilliwack River Floodplain Mapping (Vedder River to Slesse Creek ) | Ministry of Environment and Climate Change Strategy | 1981 | final |
Towns with a flood study on file
Its flood study puts Electoral Area E, Fraser 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.
Flood studies don’t enter the grade; they are listed so you can open the official map for Electoral Area E, Fraser 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.
Shaking is Electoral Area E, Fraser Valley’s costliest hazard: $0.19 a year per $1,000
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
At $0.19 per $1,000, Electoral Area E, Fraser Valley carries roughly 6.5 times the typical Canadian town’s earthquake risk ($0.030).
Shaking damage a year per $1,000 of building value
Earthquake risk in British Columbia peaks in Duncan ($1.33); Electoral Area E, Fraser Valley, at $0.19, is below the median of $0.36.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
12% of Canada’s 2,611 towns expect more shaking damage than Electoral Area E, Fraser Valley, which places it in the upper third.
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 Electoral Area E, Fraser Valley.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Little radon around Electoral Area E, Fraser Valley: 3% of area homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Where the typical Canadian town has 6.6% of homes over the guideline, Electoral Area E, Fraser Valley’s area has fewer, 3%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
The median in British Columbia is 1.8% over 200 Bq/m³; the survey area around Electoral Area E, Fraser Valley has 3%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Radon rarely tops the guideline around Electoral Area E, Fraser Valley, as for 37% of Canada’s 2,611 towns; 63% see more.
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, Electoral Area E, Fraser Valley’s included, whatever the area’s figure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Not measured by town: radon tests (the Fraser East health region)
Where to get warnings in Electoral Area E, Fraser Valley
Alerts for Electoral Area E, Fraser Valley 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 Electoral Area E, Fraser Valley 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)
How Electoral Area E, Fraser Valley’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Electoral Area E, Fraser Valley | Low | $0.19 | 3% | Yes |
| Tzeachten 13 4,899 · 9.2 km | Low | $0.28 | 3% | Yes |
| Skowkale 1,114 · 10 km | Low | $0.25 | 3% | None listed |
| Chilliwack 105,520 · 11 km | Low | $0.31 | 3% | Yes |
| Rosedale 2,401 · 13 km | Low | $0.10 | 3% | Yes |
| Cultus Lake 2,773 · 15 km | Low | $0.28 | 3% | Yes |
| Kent 7,093 · 18 km | Low | $0.15 | 3% | Yes |
Kent burns a little more than Electoral Area E, Fraser 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 E, Fraser Valley faces
What to do about the hazards Electoral Area E, Fraser Valley faces, and what to ask before you buy.
- 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. 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 Electoral Area E, Fraser Valley floods.
- 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 Electoral Area E, Fraser Valley sits in.
- Earthquakes are modelled. Seismic risk is NRCan’s model of yearly building losses from shaking, averaged over many years and given for Electoral Area E, Fraser Valley’s census subdivision (a neighbourhood shows its city’s).
- Wildfire counts one way. For Electoral Area E, Fraser Valley, wildfire means how much nearby land burned in the past forty years, a one-way input that can pull Risk down and nothing more.
Questions about flooding and hazards in Electoral Area E, Fraser Valley
How is Electoral Area E, Fraser Valley’s Hazard risk Grade worked out?
Electoral Area E, Fraser Valley’s Hazard risk grade is C+, built on earthquakes and radon with a one-sided wildfire input.
Does Electoral Area E, Fraser Valley flood?
Electoral Area E, Fraser Valley’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 radon a problem in Electoral Area E, Fraser Valley?
In Health Canada’s survey, 3% of 100 homes tested in Electoral Area E, Fraser Valley’s area were above 200 Bq/m³, though only a test tells you about one house.
Is Electoral Area E, Fraser Valley at risk of wildfire?
Less than most of Canada: 0.4% of the land within 25 km of Electoral Area E, Fraser Valley has burned since 1986, the last in 2023, a low band that leaves Risk alone.
How big is the earthquake risk in Electoral Area E, Fraser Valley?
Expected earthquake damage in Electoral Area E, Fraser Valley comes to $0.19 a year for each $1,000 that buildings are worth.
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).