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20150708 - 03 - Unorganized North Algoma District, Ont. - Havilland Bay - A First Look at Lake SuperiorPhoto: Andre Carrotflower · CC BY-SA 4.0
AHazard risk Grade
Hazards in Algoma, Unorganized, North Part · NRCan, Health Canada, CWFIS

Hazard risk in Algoma, Unorganized, North Part is lower than in 88% of Canadian towns

Fire seldom reaches Algoma, Unorganized, North Part: since 1986, 0.2% of the land within 25 km has burned (0.004% a year). Seismic risk runs low: $0.004 of expected damage per $1,000 of buildings a year, the typical town $0.030. Radon is about average around Algoma, Unorganized, North Part: 8.6% of tested homes in the survey area topped the guideline, against 6.6% for the typical town. Algoma, Unorganized, North Part grades A for hazard risk, with wildfire counted against it.

In brief

What stands out about Algoma, Unorganized, North Part’s hazards

Four national sources, each read for Algoma, Unorganized, North Part: earthquakes, radon, past fires and flood studies.

By hazard

What Algoma, Unorganized, North Part faces

Each hazard against its own yardstick; meters run from low to high on that yardstick.

Not on this page: flood zones and homes in them, past floods, landslides, industrial sites and storm surge: Canada has no national open source for them by town.
Hazard risk Grade

Algoma, Unorganized, North Part grades A for hazard risk

Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Algoma, Unorganized, North Part with little fire nearby would get no credit for it.

Earthquake risk ($0.004)Better than 97% of Canadian towns
Radon (8.6%)Better than 49% of Canadian towns
Wildfire (one-sided) (Low)Better than 33% of Canadian towns · counted against it
Flood study (Yes)Shown, never graded

Its place: #162 of 866 in Ontario and #478 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.

Wildfire

Few fires near Algoma, Unorganized, North Part: 1.1% within 5 km, 0.2% within 25 km

Fires mapped since 1986 around where Algoma, Unorganized, North Part’s residents live, and the fuel next to their homes.

0.004%
of land within 25 km burned a year
2011
last burn within 5 km
2.3 km
to the nearest mapped burn

Low by Canadian standards: 0.004% of the land a year around Algoma, Unorganized, North Part, 0.000% for the typical Canadian town.

Land within 5 and 25 km of Algoma, Unorganized, North Part’s homes
Burned, 5 km1.1%
Burned, 25 km0.2%
Forest, 5 km26%
Forest, 25 km38%
Grass, 5 km1.1%

Within 5 km of Algoma, Unorganized, North Part, 26% of the land is forest fuel; widen the ring to 25 km and it is 38%.

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 871

Sioux Lookout0.16%
Red Lake0.14%
Geraldton0.12%
Sudbury, Unorganized, North Part0.09%
Kenora, Unorganized0.08%
Deep River0.07%
French River / Rivière des Français0.07%
Algoma, Unorganized, North Part0.004%

Sioux Lookout burns fastest in Ontario at 0.16% a year; Algoma, Unorganized, North Part, at 0.004%, ranks 45th of 871.

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.

Canada’s 2,610 towns by wildfire band
92%LowAlgoma, Unorganized, North Part
5.4%Moderate
1.9%High
0.2%Very high

Some fire is mapped around Algoma, Unorganized, North Part, 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.

Flood studies

The Corporation of the Municipality of Huron Shores has mapped flooding for Algoma, Unorganized, North Part (1 study)

Flood studies whose area touches Algoma, Unorganized, North Part, from NRCan’s inventory, each linked to its owner.

The Corporation of the Municipality of Huron Shores studied flooding in an area that includes Algoma, Unorganized, North Part (2024); open its map to see which streets lie in a flood zone.

StudyByYearStatus
Huron Shores Floodplain Mapping StudyThe Corporation of the Municipality of Huron Shores2024final

Towns with a flood study on file

Ont.69%
Canada58%

Mapping in Ontario reaches 69% of towns, Algoma, Unorganized, North Part included, beside 58% across Canada.

NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.

Flood studies don’t enter the grade; they are listed so you can open the official map for Algoma, Unorganized, North Part.

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.

Earthquakes

Low seismic risk in Algoma, Unorganized, North Part: $0.004 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.

$0.004
a year per $1,000 of building value
$5K
expected building losses a year, all told

Algoma, Unorganized, North Part’s $0.004 is a fraction of the typical town’s $0.030 (0.1 times as much): quiet ground by Canadian standards.

Shaking damage a year per $1,000 of building value

Alexandria$0.21
Median, Ont.$0.043
Median, Canada$0.030
Algoma, Unorganized, North Part$0.004

Below the middle in Ontario: Algoma, Unorganized, North Part’s $0.004 against a median of $0.043; Alexandria has $0.21.

NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.

Canada’s 2,611 towns by shaking damage a year
14%under $0.01Algoma, Unorganized, North Part
21%$0.01+
15%$0.02+
20%$0.03+
4.9%$0.05+
20%$0.10+
5.4%$0.25+
0.8%$0.60+

At the bottom of Canada’s range, Algoma, Unorganized, North Part has 98% of the 2,611 towns above it.

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 Algoma, Unorganized, North Part’s figure, nor landslides or tsunami: it is buildings and shaking.

Earthquakes Canada

Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).

Radon

Radon about average around Algoma, Unorganized, North Part: 8.6% over the guideline

Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline.

26 Bq/m³
median test
93
homes tested

Near the middle for radon: Algoma, Unorganized, North Part’s area 8.6%, the typical Canadian town 6.6%.

Tested homes over 200 Bq/m³

Algoma, Unorganized, North Part8.6%
Median, Ont.4%
Median, Canada6.6%

Over 600 Bq/m³

Algoma, Unorganized, North Part1.1%
Median, Ont.0%
Median, Canada0%

Algoma, Unorganized, North Part’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.

Canada’s 2,611 towns by share of tests over 200 Bq/m³
Under 5%37%
5–10% · Algoma, Unorganized, North Part37%
10–20%22%
20–30%3.1%
30% or more1.5%

Algoma, Unorganized, North Part is in the 5–10% band with 37% of Canada’s 2,611 towns; 26% have more.

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 Algoma, Unorganized, North Part can be high while next door is low; a three-month test settles it.

Take Action on Radon

Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Radon tests published for the The District of Algoma Health Unit, not by town

Warnings

Weather and fire alerts for Algoma, Unorganized, North Part

Alerts for Algoma, Unorganized, North Part come from Environment and Climate Change Canada and, for emergencies, Alert Ready.

AlertWhat it means
WarningSevere weather is happening or about to: act now.
WatchConditions favour severe weather: be ready.
AdvisoryWeather that is less severe but could disrupt the day.
Special weather statementUnusual weather worth knowing about.
Special air quality statementPoor air, often wildfire smoke.

Fire danger and active fires near Algoma, Unorganized, North Part 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)

Be ready

Get ready for what Algoma, Unorganized, North Part faces

What to do about the hazards Algoma, Unorganized, North Part faces, and what to ask before you buy.

Radon
  • Test for three months in winter.
  • Over 200 Bq/m³: fix it.
  • Kits are cheap; pros test too.
Take Action on Radon
When the river rises
  • Never drive through floodwater.
  • Move papers and medicines upstairs.
  • Ask whether your street is mapped.
Alert Ready
Wildfire season
  • Clear needles and wood nearby.
  • Keep a grab-and-go bag ready.
  • In smoke, stay in; filter air.
FireSmart Canada
Before you buy or rent in Algoma, Unorganized, North Part
  • Has it had a radon test?
  • Check the address on the flood map.
  • Are flood and wildfire insured?
How to read these numbers

What this data can and can’t tell you

  • 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 Algoma, Unorganized, North Part.
  • Wildfire counts one way. Wildfire is read from the national burned-area record around Algoma, Unorganized, North Part’s homes since 1986, a history of fire that may lower Risk but never raises it.
  • Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Algoma, Unorganized, North Part’s figure is its subdivision’s.
  • Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Algoma, Unorganized, North Part takes its 2007 health region’s share.

Get Prepared (Public Safety Canada)

Questions about flooding and hazards in Algoma, Unorganized, North Part

Is radon a problem in Algoma, Unorganized, North Part?

In Health Canada’s survey, 8.6% of 93 homes tested in Algoma, Unorganized, North Part’s area were above 200 Bq/m³, though only a test tells you about one house.

How big is the earthquake risk in Algoma, Unorganized, North Part?

Expected earthquake damage in Algoma, Unorganized, North Part comes to $0.004 a year for each $1,000 that buildings are worth.

How is Algoma, Unorganized, North Part’s Hazard risk Grade worked out?

Algoma, Unorganized, North Part grades A for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.

Is Algoma, Unorganized, North Part at risk of wildfire?

Less than most of Canada: 0.2% of the land within 25 km of Algoma, Unorganized, North Part has burned since 1986, the last in 2011, a low band that leaves Risk alone.

Does Algoma, Unorganized, North Part flood?

The inventory lists a study touching Algoma, Unorganized, North Part; whether a given street floods is on that map, not in 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).