Photo: Ansgar Walk · CC BY-SA 2.5Wildfire low, radon 0%: how Clyde River stands on hazards
Earthquakes add more: NRCan’s model puts building losses at $0.094 a year per $1,000 of value, against $0.030 for the typical town. Risk can’t be graded for Clyde River, because the national fuel grid stops south of it. Clyde River grades A− for hazard risk, without a wildfire figure.
What stands out about Clyde River’s hazards
Four national sources, each read for Clyde River: earthquakes, radon, past fires and flood studies.
What Clyde River faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Earthquakes
Radon
Flood study
Clyde River grades A− for hazard risk
For Clyde River, Risk will be the average of earthquakes and radon, with wildfire added only if it makes the average worse.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. The radon share rests on 78 home tests in the survey area, so a few homes move it.
Wildfire isn’t measured for Clyde River
Clyde River lies north of the national fuel map, so its wildfire risk isn’t measured, and Risk can’t be graded without it.
The flood map inventory lists nothing for Clyde River
Flood studies whose area touches Clyde River, from NRCan’s inventory, each linked to its owner.
The inventory has nothing for Clyde River, but a local or conservation-authority map may still exist.
Towns with a flood study on file
No inventory study touches Clyde River, where 58% of Canadian towns have one.
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 Clyde River.
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.”
Shaking is Clyde River’s costliest hazard: $0.094 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.
Clyde River’s $0.094 is about 3.1 times the typical town’s $0.030: it sits in one of Canada’s more active seismic zones.
Shaking damage a year per $1,000 of building value
With too few towns in Nunavut for a median of their own, Clyde River is set beside Canada’s: $0.094 against $0.030.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
More earthquake risk than most: only 26% of Canada’s 2,611 towns are above Clyde River.
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 Clyde River’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).
0% of homes tested around Clyde River are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Radon runs below the typical Canadian town (6.6%) in Clyde River’s area, at 0%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
With only a few towns in Nunavut, there is no local median to set Clyde River’s 0% against, so the bars use Canada’s.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Under 5% puts Clyde River 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 Clyde River 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). · Radon tests: the Nunavut health region
Weather and fire alerts for Clyde River
Environment and Climate Change Canada issues the weather alerts for Clyde River; 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. |
For fires near Clyde River, the national fire information system maps danger and active fires daily; local authorities give any evacuation order.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Get ready for what Clyde River faces
Practical steps for Clyde River’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.
- Clear needles and wood nearby.
- Keep a grab-and-go bag ready.
- In smoke, stay in; filter air.
- Has it had a radon test?
- Ask the municipality for flood maps.
- How close is the forest edge?
- Are flood and wildfire insured?
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; Clyde River’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 Clyde River until then.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Clyde River’s homes since 1986, a history of fire that may lower Risk but never raises it.
- Flood studies aren’t flood zones. Flood studies cover areas of every size, which is why the page lists them for Clyde River without grading them.
Questions about flooding and hazards in Clyde River
How is Clyde River’s Hazard risk Grade worked out?
Clyde River grades A− for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Does Clyde River flood?
No study on Canada’s Flood Map Inventory covers Clyde River (0), which doesn’t mean it has never been mapped, so ask the municipality.
How big is the earthquake risk in Clyde River?
Expected earthquake damage in Clyde River comes to $0.094 a year for each $1,000 that buildings are worth.
Is radon a problem in Clyde River?
0% of the 78 homes Health Canada tested around Clyde River topped the guideline; your own house needs its own test.
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).