Largest Wildfires in Canadian History
Learn about some of Canada's largest documented wildfires and burned areas, including why historical rankings depend on data coverage, merged fire complexes, and mapping methods.
There is no perfectly simple all-time top-ten list
Canada's historical wildfire records span many agencies, decades, and mapping methods. Some historical records are points rather than perimeters, some large burned areas contain multiple fires that merged, and older data are less complete. A responsible ranking must state the dataset and whether it is describing one named incident or a merged burned area.
Donnie Creek became the largest recorded wildfire in British Columbia
The 2023 Donnie Creek wildfire burned roughly 619,000 hectares according to official reporting, making it the largest recorded wildfire in British Columbia. It is a useful example of how one incident can dominate a provincial season.
The 2016 Horse River wildfire burned across a very large area
Alberta Wildfire reported the Horse River wildfire, associated with the Fort McMurray disaster, at approximately 589,617 hectares. Its significance cannot be understood by size alone because community impact, evacuation, and losses were also central to the event.
Some 2023 fires merged into a burned area larger than one million hectares
Natural Resources Canada has described a group of fires near the British Columbia, Alberta, and Northwest Territories borders that merged into a burned area exceeding one million hectares in 2023. That is a multi-fire complex or merged burned area, not necessarily one original named ignition, which is why headline rankings need careful wording.
Common questions
What was the largest wildfire ever in Canada?
The answer depends on whether you mean one named incident, a merged fire complex, or a mapped burned area, and on the historical dataset used. FireRadar avoids presenting an unsupported single all-time winner.
Is fire size the same as damage?
No. A very large remote fire may burn more hectares than a smaller fire that causes greater evacuation, structure, economic, or health impacts.
Why are older wildfire records incomplete?
Detection, reporting, mapping technology, jurisdictional record keeping, and the preservation of perimeter data have changed over time.
Official and trusted sources
FireRadar summarizes these resources in plain language. Follow the source itself for the newest guidance, local instructions, eligibility rules, or operational decisions.
National historical fire point and perimeter data with important coverage and completeness caveats.
National wildfire information and downloadable fire statistics by year and jurisdiction.
Official national forest reporting, including annual wildfire counts and area burned.
Related FireRadar resources
Explore how Canadian wildfire counts and area burned vary from year to year, why fire count alone can be misleading, and where to find official national datasets.
Learn how to interpret official wildfire incidents, satellite hotspots, fire perimeters, smoke forecasts, AQHI, statuses, timestamps, and evacuation information without mixing unlike datasets.
Understand when wildfire activity is generally most common across Canada, why timing varies by region and year, and where to find official local wildfire information.
Open province, territory, wildfire, hotspot, smoke, and AQHI map views from the FireRadar directory.