Photo: Earl Andrew · CC BY-SA 4.0Flood mapping exists for Manor Park: 7 on record, latest by Rideau Valley Conservation Authority
Wildfire isn’t Manor Park’s worry: 0% of the land within 25 km burned since 1986 (0.001% a year). Shaking is a bigger worry than in most places, at $0.15 a year per $1,000 of building value ($0.030 typical). Manor Park’s survey area, 6.2% over the radon guideline, is close to the typical town’s 6.6%. Hazard risk gives Manor Park a grade of C+, from earthquakes and radon alone.
What stands out about Manor Park’s hazards
Four national sources, each read for Manor Park: earthquakes, radon, past fires and flood studies.
What Manor Park faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Manor Park grades C+ for hazard risk
For Manor Park, Risk will be the average of earthquakes and radon, with wildfire added only if it makes the average worse.
Its place: #703 of 866 in Ontario and #1,894 of 2,589 Canadian towns.
How sure: The seismic figure is a long-run average from NRCan’s model, not a prediction. Only 64 homes were tested in the survey area, so the radon share is rough. Small fires and grass fires are largely missing from the national burned-area record.
Little of the land around Manor Park has burned: 0% within 5 km, 0% within 25 km since 1986
Fires mapped since 1986 around where Manor Park’s residents live, and the fuel next to their homes.
Around Manor Park fire takes 0.001% of the land in a typical year, the typical Canadian town 0.000%, which is low.
Manor Park’s homes have had no fire within 5 km since 1986; the closest was 19 km away.
Homes in Manor Park sit on open or built-up ground (2% forest fuel within 5 km); the wider 25 km holds 8.6%.
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
Manor Park ranks 83rd of the 871 towns in Ontario for burn rate, at 0.001% a year; Sioux Lookout leads with 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.
Some fire is mapped around Manor Park, 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.
Flooding around Manor Park is mapped in 7 studies, the newest by Rideau Valley Conservation Authority
Flood studies whose area touches Manor Park, from NRCan’s inventory, each linked to its owner.
7 studies on the inventory touch Manor Park, the newest Rideau Valley Conservation Authority’s from 2019, and their areas can be large, so they say maps exist, not that the town floods.
| Study | By | Year | Status |
|---|---|---|---|
| Billberry Creek | Rideau Valley Conservation Authority | 2019 | final |
| Becketts Creek | Rideau Valley Conservation Authority | 2018 | final |
| Rideau River, Hogs Back to Rideau Falls | Rideau Valley Conservation Authority | 2016 | final |
| Gatineau-Argenteuil-Collindes-de-l'Outaouais | Municipalité de Pontiac | 2016 | final |
| Cardinal Creek | Rideau Valley Conservation Authority | 2014 | final |
| Ottawa River | Rideau Valley Conservation Authority | 2014 | final |
| Ville-de-Gatineau | Ville de Gatineau | 2014 | final |
Towns with a flood study on file
Its flood study puts Manor Park with 69% of towns in Ontario; Canada’s share is 58%.
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 Manor 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.”
Natural Resources Canada, Canada Flood Map Inventory; links go to each study’s owner.
Shaking is Manor Park’s costliest hazard: $0.15 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.
Manor Park’s $0.15 is about 5 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
Earthquake risk in Ontario peaks in Alexandria ($0.21); Manor Park, at $0.15, sits above 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.
15% of Canada’s 2,611 towns expect more shaking damage than Manor Park, which places it in the upper third.
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 Manor Park’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). · Area behind the earthquake risk figures: the city of Ottawa
Some radon around Manor Park: 6.2% of area homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · Measured across the City of Ottawa Health Unit: radon tests
Near the middle for radon: Manor Park’s area 6.2%, the typical Canadian town 6.6%.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
More homes top the guideline around Manor Park (6.2%) than in the typical town in Ontario (4%).
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
37% of Canada’s 2,611 towns share Manor Park’s band of 5 to 10%; 26% sit higher.
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 Manor Park 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).
Weather and fire alerts for Manor Park
Alerts for Manor 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. |
Evacuation orders for Manor Park come from the municipality or the province, while CWFIS maps fire danger every day.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
How Manor Park’s neighbours compare on hazards
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Manor Park | Low | $0.15 | 6.2% | Yes |
| Vanier North 10,498 · 1.2 km | Low | $0.15 | 6.2% | Yes |
| Waterridge Village 2,737 · 1.9 km | Low | $0.15 | 6.2% | Yes |
| New Edinburgh 5,728 · 1.9 km | Low | $0.15 | 6.2% | Yes |
| Vanier South 7,259 · 1.9 km | Low | $0.15 | 6.2% | Yes |
| Overbrook 19,953 · 2.4 km | Low | $0.15 | 6.2% | Yes |
| Carson Grove - Carson Meadows 11,290 · 2.7 km | Low | $0.15 | 6.2% | None listed |
Manor Park’s low band tops its neighbours; Vanier North is next (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Manor Park faces
Practical steps for Manor Park’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.
- Drop, cover and hold on.
- Strap the water heater down.
- Keep 72 hours of supplies.
- Has it had a radon test?
- Check the address on the flood map.
- Are flood and wildfire insured?
- Is earthquake cover included?
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 Manor Park’s homes burned each year from 1986 to 2025, past fire rather than a forecast, and it can only lower Risk.
- 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 Manor Park 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 Manor Park’s.
- 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 Manor Park sits in.
Questions about flooding and hazards in Manor Park
Is radon a problem in Manor Park?
6.2% of the 64 homes Health Canada tested around Manor Park topped the guideline; your own house needs its own test.
How big is the earthquake risk in Manor Park?
Expected earthquake damage in Manor Park comes to $0.15 a year for each $1,000 that buildings are worth.
Is Manor Park at risk of wildfire?
Not much by Canadian standards: Manor Park’s band is low, with 0% of the land within 25 km burned since 1986 (last in 2020), so wildfire doesn’t change its grade.
How is Manor Park’s Hazard risk Grade worked out?
Hazard risk gives Manor Park C+, weighing earthquakes and radon and counting wildfire only against it.
Does Manor Park flood?
Manor Park’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).