Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainA flood study covers Electoral Area C, Squamish-Lillooet: 2 on the national inventory, the newest from Pemberton Valley Dyking District Office
Some 2.3% of the land within 25 km of Electoral Area C, Squamish-Lillooet has burned since 1986; at 0.06% a year that is moderate, not high. Seismic risk runs high: $0.061 of expected damage per $1,000 of buildings a year, the typical town $0.030. Radon is lower than usual: 2.5% of tested homes in the survey area topped the guideline, against 6.6% for the typical town. Hazard risk gives Electoral Area C, Squamish-Lillooet a grade of B+; its wildfire band pulls it down.
What stands out about Electoral Area C, Squamish-Lillooet’s hazards
Four national sources, each read for Electoral Area C, Squamish-Lillooet: earthquakes, radon, past fires and flood studies.
What Electoral Area C, Squamish-Lillooet faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Electoral Area C, Squamish-Lillooet: B+
Earthquake risk and radon make Electoral Area C, Squamish-Lillooet’s grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. Small fires and grass fires are largely missing from the national burned-area record.
A moderate wildfire record for Electoral Area C, Squamish-Lillooet: 2.3% within 25 km burned, 1.6% within 5 km
Fires mapped since 1986 around where Electoral Area C, Squamish-Lillooet’s residents live, and the fuel next to their homes.
The yearly burn rate around Electoral Area C, Squamish-Lillooet is 0.06%, above 0.000% for the typical Canadian town but under the high band.
Forest crowds in on Electoral Area C, Squamish-Lillooet: 53% of the land within 5 km is forest fuel, more than the 45% 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
Electoral Area C, Squamish-Lillooet burns at 0.06% a year, 67th of 256 towns in British Columbia; the leader, Oliver, reaches 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 Electoral Area C, Squamish-Lillooet, 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.
Flooding around Electoral Area C, Squamish-Lillooet is mapped in 2 studies, the newest by Pemberton Valley Dyking District Office
Flood studies whose area touches Electoral Area C, Squamish-Lillooet, from NRCan’s inventory, each linked to its owner.
Pemberton Valley Dyking District Office and others have studied flooding in areas that include Electoral Area C, Squamish-Lillooet: 2 studies, the latest from 2018.
| Study | By | Year | Status |
|---|---|---|---|
| Lillooet River Floodplain Mapping | Pemberton Valley Dyking District Office | 2018 | final |
| Whistler Area (Resort Municipality) Floodplain Mapping | Ministry of Environment and Climate Change Strategy | 1993 | final |
Towns with a flood study on file
76% of towns in British Columbia have a flood study, more than Canada’s 58%; Electoral Area C, Squamish-Lillooet has one too.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
No single decade dominates: 2 studies for Electoral Area C, Squamish-Lillooet between the 1990s and the 2010s.
Study dates as the NRCan inventory lists them, one count per study touching Electoral Area C, Squamish-Lillooet.
The grade leaves flood out, since a study area says nothing about how many of Electoral Area C, Squamish-Lillooet’s homes are at risk.
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 C, Squamish-Lillooet’s costliest hazard: $0.061 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.
Roughly 2 times the typical $0.030: Electoral Area C, Squamish-Lillooet’s $0.061 marks real seismic exposure.
Shaking damage a year per $1,000 of building value
Electoral Area C, Squamish-Lillooet’s $0.061 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.
Electoral Area C, Squamish-Lillooet sits above most of Canada’s 2,611 towns on earthquake risk; 29% are 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).
Roads, pipes and bridges aren’t in Electoral Area C, Squamish-Lillooet’s figure, nor landslides or tsunami: it is buildings and shaking.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
2.5% of homes tested around Electoral Area C, Squamish-Lillooet are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Fewer homes than usual test high around Electoral Area C, Squamish-Lillooet: 2.5% against 6.6% for the typical Canadian town. For radon tests, the only official count covers all of the North Shore/Coast Garibaldi health region, Electoral Area C, Squamish-Lillooet included.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Electoral Area C, Squamish-Lillooet’s area, at 2.5%, is above the median in British Columbia (1.8%).
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Under 5% puts Electoral Area C, Squamish-Lillooet with 37% of Canada’s 2,611 towns; 63% have more high tests.
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.
One home in Electoral Area C, Squamish-Lillooet can be high while next door is low; a three-month test settles it.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Electoral Area C, Squamish-Lillooet
Environment and Climate Change Canada issues the weather alerts for Electoral Area C, Squamish-Lillooet; 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. |
Smoke and fire warnings for Electoral Area C, Squamish-Lillooet come through Environment Canada and Alert Ready; the fire map is CWFIS’s.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Electoral Area C, Squamish-Lillooet’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Electoral Area C, Squamish-Lillooet | Moderate | $0.061 | 2.5% | Yes |
| Pemberton 3,620 · 1.2 km | Low | $0.038 | 2.5% | Yes |
| Mount Currie 1,298 · 10 km | Low | $0.070 | 2.5% | Yes |
Fire is no heavier anywhere nearby than around Electoral Area C, Squamish-Lillooet (moderate), with Pemberton next at low.
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Electoral Area C, Squamish-Lillooet faces
Practical steps for Electoral Area C, Squamish-Lillooet’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. Shaking damage is modelled from the ground, the buildings and the odds of each quake, and published for whole subdivisions such as Electoral Area C, Squamish-Lillooet’s.
- Wildfire counts one way. The wildfire figure is the share of land within 25 km of Electoral Area C, Squamish-Lillooet’s homes burned each year from 1986 to 2025, past fire rather than a forecast, and it can only lower Risk.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Electoral Area C, Squamish-Lillooet takes its 2007 health region’s share.
- Flood studies aren’t flood zones. The flood inventory points to maps; it is incomplete and not the official source, so ask the municipality about any street in Electoral Area C, Squamish-Lillooet.
Questions about flooding and hazards in Electoral Area C, Squamish-Lillooet
Is radon a problem in Electoral Area C, Squamish-Lillooet?
The area’s survey found 2.5% of 81 tested homes above Health Canada’s guideline, so a three-month test is worth doing in Electoral Area C, Squamish-Lillooet.
How is Electoral Area C, Squamish-Lillooet’s Hazard risk Grade worked out?
Hazard risk gives Electoral Area C, Squamish-Lillooet B+, weighing earthquakes and radon and counting wildfire only against it.
Does Electoral Area C, Squamish-Lillooet flood?
The inventory lists a study touching Electoral Area C, Squamish-Lillooet; whether a given street floods is on that map, not in the grade.
How big is the earthquake risk in Electoral Area C, Squamish-Lillooet?
Expected earthquake damage in Electoral Area C, Squamish-Lillooet comes to $0.061 a year for each $1,000 that buildings are worth.
Is Electoral Area C, Squamish-Lillooet at risk of wildfire?
Some, but Electoral Area C, Squamish-Lillooet’s moderate band (2.3% of nearby land burned since 1986, latest 2025) 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).