Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domain35% of homes tested in Harrison Park’s area are above the radon guideline
Wildfire is a moderate presence around Harrison Park: 2.1% of the land within 25 km has burned since 1986, 0.07% a year, short of the band that counts against Risk. Seismic risk runs low: $0.005 of expected damage per $1,000 of buildings a year, the typical town $0.030. Harrison Park grades B− for hazard risk, with wildfire counted against it.
What stands out about Harrison Park’s hazards
For Harrison Park, from NRCan’s seismic model, Health Canada’s radon survey, the national burned-area record and the flood map inventory.
What Harrison Park faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Harrison Park grades B− for hazard risk
Two inputs always count for Harrison Park, earthquakes and radon; the third, wildfire, counts only against a town.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. The burned-area record misses fires under about 10 ha and most grass and farm fires.
Some fire around Harrison Park: 2.1% of the land within 25 km since 1986, 0.7% within 5 km
Past fire around Harrison Park’s homes, from the national burned-area record, with the fuel within 5 km.
The yearly burn rate around Harrison Park is 0.07%, above 0.000% for the typical Canadian town but under the high band.
18% of the land within 25 km of Harrison Park is forest fuel, yet only 4.9% within 5 km of its homes.
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 Manitoba · highest of 190
Harrison Park ranks 17th of the 190 towns in Manitoba for burn rate, at 0.07% a year; Flin Flon (Part) leads with 1.68%.
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.
Harrison Park is in the moderate band, which holds 5.4% of Canada’s 2,610 towns; 2.1% 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 Harrison Park
What Canada’s Flood Map Inventory lists for Harrison Park: who studied flooding and where to see their maps.
No flood study on the national inventory covers Harrison Park; ask the municipality, which is the authority for its flood maps.
Towns with a flood study on file
Harrison Park has no flood study on file; only 18% of towns in Manitoba do, against 58% across Canada.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Listed, not scored: a flood study proves a map exists, not that Harrison Park floods.
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 Harrison Park: $0.005 a year per $1,000
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
0.2 times the typical $0.030: Harrison Park’s $0.005 is low for Canada.
Shaking damage a year per $1,000 of building value
The median in Manitoba is $0.006; Harrison Park, at $0.005, is right beside it, and Virden tops the list at $0.007.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
Harrison Park is among Canada’s quietest towns for earthquakes: 96% of the 2,611 expect more damage.
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).
Only shaking damage to buildings in Harrison Park is counted; landslides, liquefaction, tsunami and fire after a quake aren’t.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Radon runs high around Harrison Park: 35% of tested homes over the guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
Harrison Park’s survey area reads 35% over the guideline, well past the typical Canadian town’s 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Harrison Park’s area, at 35%, is above the median in Manitoba (12%), and 1.8% 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.
Harrison Park is in the top band, 30% or more, with just 1.5% of Canada’s towns.
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.
Health Canada advises testing every home, Harrison Park’s included, whatever the area’s figure.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011). · Radon tests: the Assiniboine health region
Where to get warnings in Harrison Park
Alerts for Harrison Park 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. |
Alert Ready carries evacuation orders for Harrison Park to phones; CWFIS shows the day’s fire danger.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Get ready for what Harrison Park faces
What to do about the hazards Harrison Park faces, and what to ask before you buy.
- Clear needles and wood nearby.
- Keep a grab-and-go bag ready.
- In smoke, stay in; filter air.
- 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.
- 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
- 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 Harrison Park.
- 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 Harrison Park.
- Earthquakes are modelled. The earthquake figure is an expected loss, not a forecast, worked out by NRCan for each census subdivision, Harrison Park’s included.
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Harrison Park takes its 2007 health region’s share.
Questions about flooding and hazards in Harrison Park
How big is the earthquake risk in Harrison Park?
In NRCan’s seismic model, Harrison Park’s buildings lose $0.005 per $1,000 of value in an average year.
How is Harrison Park’s Hazard risk Grade worked out?
Harrison Park’s Hazard risk grade is B−, built on earthquakes and radon with a one-sided wildfire input.
Is Harrison Park at risk of wildfire?
Fire has reached 2.1% of the land around Harrison Park since 1986 (last in 2025); at moderate, it neither helps nor hurts the grade.
Is radon a problem in Harrison Park?
Around Harrison Park, 110 survey homes were tested and 35% came in over 200 Bq/m³, a guide to the area, not to any one home.
Does Harrison Park flood?
With 0 studies on the inventory, Harrison Park’s flood risk is unmapped nationally; check with the municipality before buying.
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).