Photo: P199 · Public domainMacdonald, Meredith and Aberdeen Additional faces fewer hazards than 88% of Canadian towns
Since 1986 almost nothing has burned near Macdonald, Meredith and Aberdeen Additional: 0% of the land within 25 km, or 0.000% a year. Earthquakes matter little: NRCan’s model puts building losses at $0.004 a year per $1,000 of value, against $0.030 for the typical town. Radon around Macdonald, Meredith and Aberdeen Additional is ordinary for Canada: 8.6% of tested homes over the guideline (6.6% typical). Hazard risk gives Macdonald, Meredith and Aberdeen Additional a grade of A, from earthquakes and radon alone.
What stands out about Macdonald, Meredith and Aberdeen Additional’s hazards
For Macdonald, Meredith and Aberdeen Additional, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Macdonald, Meredith and Aberdeen Additional faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Macdonald, Meredith and Aberdeen Additional grades A for hazard risk
Earthquake risk and radon make Macdonald, Meredith and Aberdeen Additional’s grade; wildfire can only lower it, never raise it, and flood studies are listed but not scored.
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 Macdonald, Meredith and Aberdeen Additional has burned: 0% within 5 km, 0% within 25 km since 1986
Fires mapped since 1986 around where Macdonald, Meredith and Aberdeen Additional’s residents live, and the fuel next to their homes.
Next to the typical Canadian town (0.000% a year), Macdonald, Meredith and Aberdeen Additional’s 0.000% is in the low band.
The 5 km ring around Macdonald, Meredith and Aberdeen Additional’s homes is clear of burns since 1986, the nearest 5.2 km out.
Near or far, forest fuel covers a similar share around Macdonald, Meredith and Aberdeen Additional: 7.6% within 5 km and 9.1% 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 Ontario · highest of 872
Near-zero burning puts Macdonald, Meredith and Aberdeen Additional with 639 of the 872 towns in Ontario, far below Sioux Lookout at 0.16%.
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 7.5% of Canada’s 2,610 towns are above the low band, which holds 92%; Macdonald, Meredith and Aberdeen Additional, at a rounded zero, is far from them.
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.
The flood map inventory lists nothing for Macdonald, Meredith and Aberdeen Additional
Flood studies whose area touches Macdonald, Meredith and Aberdeen Additional, from NRCan’s inventory, each linked to its owner.
NRCan’s inventory is silent on Macdonald, Meredith and Aberdeen Additional, so any flood map would be the municipality’s own.
Towns with a flood study on file
Flood maps are common in Ontario, 69% of towns against 58% nationally, but none in the inventory touches Macdonald, Meredith and Aberdeen Additional.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
The grade leaves flood out, since a study area says nothing about how many of Macdonald, Meredith and Aberdeen Additional’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.”
Little shaking expected in Macdonald, Meredith and Aberdeen Additional: $0.004 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 $0.004 per $1,000, Macdonald, Meredith and Aberdeen Additional carries 0.1 times the typical Canadian town’s earthquake risk ($0.030): low.
Shaking damage a year per $1,000 of building value
Earthquake risk in Ontario peaks in Alexandria ($0.21); Macdonald, Meredith and Aberdeen Additional, at $0.004, is below the median of $0.043.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
Nearly every one of Canada’s 2,611 towns (98%) expects more shaking damage than Macdonald, Meredith and Aberdeen Additional.
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).
For Macdonald, Meredith and Aberdeen Additional the model prices shaking damage to buildings, nothing more.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
8.6% of homes tested around Macdonald, Meredith and Aberdeen Additional are over the radon guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.
Around Macdonald, Meredith and Aberdeen Additional, 8.6% of tested homes topped the guideline, near the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Macdonald, Meredith and Aberdeen Additional’s area, at 8.6%, is above the median in Ontario (4%), and 1.1% of its tests passed 600 Bq/m³.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
Radon tops the guideline in a modest share of homes around Macdonald, Meredith and Aberdeen Additional, a band holding 37% of Canada’s 2,611 towns; 26% 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.
Whatever Macdonald, Meredith and Aberdeen Additional’s area share, the reading that matters is your own home’s, over a winter.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Radon tests: the The District of Algoma Health Unit
Where to get warnings in Macdonald, Meredith and Aberdeen Additional
Environment and Climate Change Canada issues the weather alerts for Macdonald, Meredith and Aberdeen Additional; 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 Macdonald, Meredith and Aberdeen Additional, 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)
Hazards in the places around Macdonald, Meredith and Aberdeen Additional
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Macdonald, Meredith and Aberdeen Additional | Low | $0.004 | 8.6% | None listed |
| Laird 1,221 · 10 km | Low | $0.005 | 8.6% | None listed |
| Garden River 14 1,205 · 12 km | Low | $0.004 | 8.6% | None listed |
The fire record around Laird is a touch heavier than Macdonald, Meredith and Aberdeen Additional’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 Macdonald, Meredith and Aberdeen Additional faces
Practical steps for Macdonald, Meredith and Aberdeen Additional’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.
- Are flood and wildfire insured?
What this data can and can’t tell you
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Macdonald, Meredith and Aberdeen Additional’s included.
- 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 Macdonald, Meredith and Aberdeen Additional 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 Macdonald, Meredith and Aberdeen Additional floods.
- Wildfire counts one way. Burned land within 25 km of where people live, averaged over 1986–2025 and checked for fuel near homes, is the measure; it looks back, not ahead, and only ever counts against Macdonald, Meredith and Aberdeen Additional.
Questions about flooding and hazards in Macdonald, Meredith and Aberdeen Additional
Is radon a problem in Macdonald, Meredith and Aberdeen Additional?
8.6% of the 93 homes Health Canada tested around Macdonald, Meredith and Aberdeen Additional topped the guideline; your own house needs its own test.
Is Macdonald, Meredith and Aberdeen Additional at risk of wildfire?
Not much by Canadian standards: Macdonald, Meredith and Aberdeen Additional’s band is low, with 0% of the land within 25 km burned since 1986 (last in 2025), so wildfire doesn’t change its grade.
How big is the earthquake risk in Macdonald, Meredith and Aberdeen Additional?
About $0.004 a year per $1,000 of building value, NRCan’s long-run expectation for Macdonald, Meredith and Aberdeen Additional.
How is Macdonald, Meredith and Aberdeen Additional’s Hazard risk Grade worked out?
Macdonald, Meredith and Aberdeen Additional’s Hazard risk grade is A, built on earthquakes and radon with a one-sided wildfire input.
Does Macdonald, Meredith and Aberdeen Additional flood?
No study on Canada’s Flood Map Inventory covers Macdonald, Meredith and Aberdeen Additional (0), which doesn’t mean it has never been mapped, so ask the municipality.
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).