Photo: This image is Image Number 937549 at Mushroom Observer , a source for mycological images. · CC BY-SA 3.0Earthquakes are Lantzville’s biggest hazard: $0.50 of damage a year per $1,000 of buildings, 17 times the norm
Wildfire is rare near Lantzville: 0.2% of the land within 25 km has burned since 1986, a burn rate of 0.005% a year. Fewer homes than usual carry radon here, 0.9% over the guideline where the typical town has 6.6%. Hazard risk gives Lantzville a grade of B−; its wildfire band pulls it down.
What stands out about Lantzville’s hazards
Four national sources, each read for Lantzville: earthquakes, radon, past fires and flood studies.
What Lantzville faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Hazard risk in Lantzville: B−
Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Lantzville with little fire nearby would get no credit for it.
Its place: #123 of 254 in British Columbia and #1,637 of 2,589 Canadian towns.
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.
Few fires near Lantzville: 0% within 5 km, 0.2% within 25 km
Fires mapped since 1986 around where Lantzville’s residents live, and the fuel next to their homes.
Around Lantzville fire takes 0.005% of the land in a typical year, the typical Canadian town 0.000%, which is low.
No fire has burned within 5 km of Lantzville’s homes since 1986; the nearest burn is 9.0 km away.
Forest thickens with distance from Lantzville: 52% of the land within 5 km, 64% 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
In the upper half in British Columbia but far from Oliver (0.98%): Lantzville ranks 121st of 255, at 0.005% a year.
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.
Some fire is mapped around Lantzville, but not enough to leave the low band, where 92% of Canada’s 2,610 towns are; 7.5% rank 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.
No flood study is listed for Lantzville
Flood studies whose area touches Lantzville, from NRCan’s inventory, each linked to its owner.
The inventory has nothing for Lantzville, but a local or conservation-authority map may still exist.
Towns with a flood study on file
Lantzville has no flood study on file, though 76% of towns in British Columbia do (Canada: 58%).
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Flood is shown here, never graded: a study says where a map exists, not how many of Lantzville’s homes stand in a flood zone.
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.”
Earthquakes cost buildings in Lantzville $0.50 per $1,000 a year
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
At $0.50 per $1,000, Lantzville carries roughly 16.6 times the typical Canadian town’s earthquake risk ($0.030).
Shaking damage a year per $1,000 of building value
Above the middle in British Columbia: Lantzville’s $0.50 against a median of $0.36, with Duncan highest 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.
Only 1.3% of Canada’s 2,611 towns expect more shaking damage than Lantzville.
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 Lantzville’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).
Radon runs low around Lantzville: 0.9% of tested homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Measured across the Central Vancouver Island health region: radon tests
Lantzville’s area, at 0.9%, is below the 6.6% of the typical Canadian town, though any one home can still be high.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon runs lower around Lantzville than in most towns in British Columbia: 0.9% against 1.8%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
The quietest radon band, under 5%, holds 37% of Canada’s 2,611 towns and Lantzville; 63% sit 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.
The share describes the area, not a house: in Lantzville as anywhere, test to be sure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Lantzville
Environment and Climate Change Canada issues the weather alerts for Lantzville; 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 Lantzville, and listen to local authorities for orders.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Lantzville
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Lantzville | Low | $0.50 | 0.9% | None listed |
| Fairwinds 7,125 · 7.6 km | Low | $0.34 | 0.9% | None listed |
| Electoral Area C, Nanaimo 3,733 · 7.7 km | Low | $0.44 | 0.9% | Yes |
| Nanaimo 111,845 · 9.9 km | Low | $0.59 | 0.9% | Yes |
| Parksville 15,371 · 19 km | Low | $0.49 | 0.9% | Yes |
The fire record around Parksville is a touch heavier than Lantzville’s, but the band is the same: low (here low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Lantzville faces
What to do about the hazards Lantzville 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?
- Ask the municipality for flood maps.
- Are flood and wildfire insured?
- Is earthquake cover included?
What this data can and can’t tell you
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Lantzville’s figure is its subdivision’s.
- 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 Lantzville.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Lantzville’s homes since 1986, a history of fire that may lower Risk but never raises it.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Lantzville takes its 2007 health region’s share.
Questions about flooding and hazards in Lantzville
Is radon a problem in Lantzville?
In Health Canada’s survey, 0.9% of 109 homes tested in Lantzville’s area were above 200 Bq/m³, though only a test tells you about one house.
Does Lantzville flood?
Nothing is listed for Lantzville on the national inventory (0); local maps may still exist with the municipality.
Is Lantzville at risk of wildfire?
Less than most of Canada: 0.2% of the land within 25 km of Lantzville has burned since 1986, the last in 2025, a low band that leaves Risk alone.
How big is the earthquake risk in Lantzville?
About $0.50 a year per $1,000 of building value, NRCan’s long-run expectation for Lantzville.
How is Lantzville’s Hazard risk Grade worked out?
Lantzville grades B− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
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).