Photo: Quintin Soloviev · CC BY 4.0Flood mapping exists for Truro: 2 on record, latest by Province of Nova Scotia
No wildfire is mapped within 25 km of Truro’s homes since 1986 (0% of the land, 0.001% a year). Seismic risk runs low: $0.014 of expected damage per $1,000 of buildings a year, the typical town $0.030. In Health Canada’s survey, 13% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Truro grades B for hazard risk; wildfire is low here, so it earns no credit.
What stands out about Truro’s hazards
Four national sources, each read for Truro: earthquakes, radon, past fires and flood studies.
What Truro faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Truro grades B for hazard risk
Two inputs always count for Truro, earthquakes and radon; the third, wildfire, counts only against a town.
Its place: #37 of 88 in Nova Scotia and #1,511 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.
Wildfire is rare near Truro: 0% of the land within 25 km burned since 1986, 0% within 5 km
Fires mapped since 1986 around where Truro’s residents live, and the fuel next to their homes.
With 0.001% burned a year, Truro is among the many low-band places (the typical Canadian town 0.000%).
No fire has burned within 5 km of Truro’s homes since 1986; the nearest burn is 6.4 km away.
The nearer ring around Truro is less wooded (49% forest fuel) than the land out to 25 km (75%).
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 Nova Scotia · highest of 90
In the lower half in Nova Scotia: Truro at 0.001% a year, 69th of 90, far from Barrington’s 0.46%.
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.
Truro 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.
Truro is on the flood map inventory: 2 studies, latest by Province of Nova Scotia
Flood studies whose area touches Truro, from NRCan’s inventory, each linked to its owner.
2 studies on the inventory touch Truro, the newest Province of Nova Scotia’s from 2024, and their areas can be large, so they say maps exist, not that the town floods.
| Study | By | Year | Status |
|---|---|---|---|
| Nova Scotia Flood Mapping Minas Basin Area | Province of Nova Scotia | 2024 | final · not public |
| Fundy Agricultural Marshlands Flood Maps | Nova Scotia Department of Agriculture, Saint Mary’s University | 2018 | final · not public |
Towns with a flood study on file
88% of towns in Nova Scotia have a flood study, more than Canada’s 58%; Truro 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 Truro between the 2010s and the 2020s.
Study dates as the NRCan inventory lists them, one count per study touching Truro.
Flood studies don’t enter the grade; they are listed so you can open the official map for Truro.
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.
Low seismic risk in Truro: $0.014 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.
Truro’s $0.014 is a fraction of the typical town’s $0.030 (0.5 times as much): quiet ground by Canadian standards.
Shaking damage a year per $1,000 of building value
Earthquake risk in Nova Scotia peaks in Clare ($0.034); Truro, at $0.014, is below the median of $0.018.
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 (73%) face more earthquake damage than Truro.
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 Truro’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).
13% of homes tested around Truro are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
A higher share than most: 13% of tested homes around Truro, the typical Canadian town 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
3.1% of tests around Truro passed 600 Bq/m³; over 200, its 13% matches the median in Nova Scotia, 13%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
The 10–20% band holds 22% of Canada’s 2,611 towns, Truro among them; 4.6% rank above.
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.
Basements, soil and how a house is sealed decide its radon, so in Truro only a test can say.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Radon tests: the Zone 3 health region
Weather and fire alerts for Truro
Alerts for Truro 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 Truro 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 Truro’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Truro | Low | $0.014 | 13% | Yes |
| Millbrook 27 1,122 · 3.7 km | Low | $0.013 | 13% | Yes |
| Colchester County, Subdivision C 14,211 · 8.0 km | Low | $0.018 | 13% | Yes |
| Colchester County, Subdivision B 21,578 · 9.9 km | Low | $0.017 | 13% | Yes |
The fire record around Colchester County, Subdivision C is a touch heavier than Truro’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 Truro faces
What to do about the hazards Truro 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.
- Clear needles and wood nearby.
- Keep a grab-and-go bag ready.
- In smoke, stay in; filter air.
- Has it had a radon test?
- Check the address on the flood map.
- Are flood and wildfire insured?
What this data can and can’t tell you
- Wildfire counts one way. The wildfire figure is the share of land within 25 km of Truro’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. The radon share comes from about 14,000 long-term home tests in 2009–2011, pooled for now by the 2007 health region Truro sits in.
- 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 Truro floods.
- 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 Truro’s.
Questions about flooding and hazards in Truro
Is radon a problem in Truro?
In Health Canada’s survey, 13% of 96 homes tested in Truro’s area were above 200 Bq/m³, though only a test tells you about one house.
Is Truro at risk of wildfire?
Less than most of Canada: 0% of the land within 25 km of Truro has burned since 1986, the last in 2022, a low band that leaves Risk alone.
How big is the earthquake risk in Truro?
Expected earthquake damage in Truro comes to $0.014 a year for each $1,000 that buildings are worth.
How is Truro’s Hazard risk Grade worked out?
Truro grades B for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Does Truro flood?
Truro’s area has been studied for flooding, and the owner’s map shows which streets lie in a zone; the grade leaves flood out.
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).