| | Event Type | Place | Event Start Date | Fatalities | Injured / Infected | Evacuated | Estimated Total Cost |
 | Meteorological - Hydrological:
Storm - Unspecified / Other | Ontario, Quebec | November 15, 2020 | 0 | 0 | 0 | Unknown |
 | Meteorological - Hydrological:
Winter Storm | Southern Ontairo and southern Quebec | January 10, 2020 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Eastern Canada | October 31, 2019 | 0 | 0 | 0 | Unknown |
 | Meteorological - Hydrological:
Wildfire | Pikangikum First Nation | May 30, 2019 | 0 | 0 | 2500 | Unknown |
 | Meteorological - Hydrological:
Flood | Eastern Canada | April 18, 2019 | 1 | Unknown | 10000 | Unknown |
| Meteorological - Hydrological:
Flood | Kashechewan, Ontario | April 15, 2019 | Unknown | Unknown | 2500 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Eastern Canada | March 14, 2019 | Unknown | Unknown | Unknown | $124,000,000 |
| Meteorological - Hydrological:
Winter Storm | Eastern Canada | January 23, 2019 | Unknown | Unknown | Unknown | $39,000,000 |
 | Meteorological - Hydrological:
Tornado | National Capital Region | September 21, 2018 | Unknown | 6 | Unknown | $334,000,000 |
| Meteorological - Hydrological:
Flood | Toronto | August 7, 2018 | Unknown | Unknown | Unknown | $80,000,000 |
 | Terrorist:
Shootings | Toronto | July 22, 2018 | 3 | 13 | Unknown | Unknown |
| Meteorological - Hydrological:
Wildfire | Ontario | July 3, 2018 | Unknown | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Southern Ontario | May 4, 2018 | 3 | Unknown | Unknown | $680,000,000 |
| Meteorological - Hydrological:
Flood | Kashechewan First Nation, Ontario | April 25, 2018 | 0 | 0 | 1672 | Unknown |
 | Terrorist:
Kidnapping / Murder | Toronto, ON | April 23, 2018 | 10 | 16 | Unknown | Unknown |
| Meteorological - Hydrological:
Winter Storm | Southern Ontario | April 14, 2018 | Unknown | Unknown | Unknown | $190,000,000 |
| Meteorological - Hydrological:
Winter Storm | Southern Ontario and southern Quebec | April 3, 2018 | 0 | 1 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Grand River, ON | February 16, 2018 | 1 | Unknown | 4900 | Unknown |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Eastern Ontario, Western Quebec | October 28, 2017 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Windsor, Ontario | August 28, 2017 | Unknown | Unknown | Unknown | $173,000,000 |
| Meteorological - Hydrological:
Flood | Eastern Canada | May 4, 2017 | 2 | Unknown | 4000 | $116,000,000 |
| Meteorological - Hydrological:
Flood | Kashechewan First Nation, Ontario | April 16, 2017 | 0 | 0 | 500 | Unknown |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Southwestern Ontario | March 8, 2017 | Unknown | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Windsor and Tecumseh ON | September 29, 2016 | Unknown | Unknown | Unknown | Unknown |
 | Meteorological - Hydrological:
Storms and Severe Thunderstorms | Southern Ontario | July 8, 2016 | Unknown | Unknown | Unknown | $47,063,000 |
| Meteorological - Hydrological:
Flood | Kenora ON | June 27, 2016 | Unknown | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Flood | Kashechewan First Nation ON | April 27, 2016 | Unknown | Unknown | 1207 | Unknown |
 | Fire:
Residential | Pikangikum First Nation ON | March 29, 2016 | 9 | Unknown | Unknown | Unknown |
 | Geological:
Landslide | Horton ON | March 28, 2016 | Unknown | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Winter Storm | Southern Ontario | March 23, 2016 | Unknown | Unknown | Unknown | $27,379,000 |
| Meteorological - Hydrological:
Winter Storm | Ontario, Quebec, New Brunswick, Nove Scotia, Prince Edward Island and Newfoundland | February 24, 2016 | Unknown | Unknown | 200 | Unknown |
| Meteorological - Hydrological:
Tornado | Southern Ontario | August 2, 2015 | Unknown | 6 | Unknown | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Southern Ontario | June 22, 2015 | Unknown | Unknown | Unknown | $29,188,000 |
| Meteorological - Hydrological:
Flood | Fort Albany and Kashcewan First Nation | April 17, 2015 | Unknown | Unknown | 1333 | Unknown |
 | Transportation accident:
Rail | Gogama and Mattagami First Nation ON | March 7, 2015 | Unknown | Unknown | Unknown | Unknown |
| Terrorist:
Shootings | Ottawa ON | October 22, 2014 | 2 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Tornado | Angus, Ontario | June 17, 2014 | 0 | 3 | Unknown | Unknown |
| Meteorological - Hydrological:
Flood | James Bay, Ontario | May 7, 2014 | 0 | 0 | 2000 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Southern Ontario | December 21, 2013 | 2 | 25 | 0 | $262,781,642 |
 | Transportation accident:
Vehicle | Ottawa, Ontario | September 18, 2013 | 9 | 34 | Unknown | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Southern Ontario and southern Quebec | July 19, 2013 | 1 | 10 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Toronto ON | July 8, 2013 | 0 | 0 | 0 | $940,000,000 |
| Meteorological - Hydrological:
Flood | Kasabonika Lake First Nation ON | May 27, 2013 | 0 | 0 | 150 | Unknown |
| Meteorological - Hydrological:
Wildfire | Sandy Lake First Nation ON | July 31, 2012 | 0 | 0 | 637 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Southern Ontario and southern Quebec | July 22, 2012 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Thunder Bay ON | May 28, 2012 | 0 | 0 | 0 | $241,589,000 |
| Meteorological - Hydrological:
Wildfire | Timmins ON | May 24, 2012 | 0 | 0 | 1000 | Unknown |
| Meteorological - Hydrological:
Wildfire | Kirkland Lake ON | May 20, 2012 | 0 | 0 | 300 | Unknown |
| Meteorological - Hydrological:
Flood | Fort Albany and Kashechewan First Nations ON | March 24, 2012 | Unknown | Unknown | 269 | Unknown |
| Meteorological - Hydrological:
Flood | Kashechewan and Fort Albany ON | March 24, 2012 | 0 | 0 | 269 | $6,700,000 |
| Transportation accident:
Rail | Burlington ON | February 26, 2012 | 3 | 45 | 0 | Unknown |
| Transportation accident:
Vehicle | Hampstead, Ontario | February 6, 2012 | 11 | 3 | Unknown | Unknown |
| Meteorological - Hydrological:
Tornado | Goderich ON | August 21, 2011 | 1 | 37 | Unknown | $112,859,000 |
| Meteorological - Hydrological:
Wildfire | Northern Ontario | July 6, 2011 | 0 | 0 | 3300 | Unknown |
| Meteorological - Hydrological:
Wildfire | Mishkeegogamang Ojibway First Nation (New Osnaburgh) ON | June 21, 2011 | Unknown | Unknown | 423 | Unknown |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Southern Ontario and southern Quebec | April 27, 2011 | 2 | 0 | 100 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Lambton County ON | December 12, 2010 | 1 | 1 | 625 | Unknown |
 | Meteorological - Hydrological:
Heat Event | Ontario and Quebec | July 3, 2010 | 280 | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Tornado | Midland ON | June 23, 2010 | 0 | 20 | 0 | $17,000,000 |
| Meteorological - Hydrological:
Tornado | Leamington ON | June 6, 2010 | 0 | 0 | 0 | $223,864 |
| Meteorological - Hydrological:
Wildfire | Chapleau ON | May 27, 2010 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Tornado | Toronto, Windsor, Vaughan and Newmarket ON | August 20, 2009 | 1 | 0 | 0 | $96,183,000 |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Hamilton and Toronto ON | July 26, 2009 | 0 | 0 | 0 | $173,312,000 |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Ottawa, Toronto and Windsor ON | April 25, 2009 | 0 | 0 | 0 | $40,981,000 |
 | Biological:
Pandemic | Across Canada | April 1, 2009 | 425 | 8582 | 0 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Kingston ON | September 15, 2008 | 0 | 0 | 0 | Unknown |
 | Explosion:
Non-Residential | Toronto ON | August 10, 2008 | 2 | 58 | 12000 | Unknown |
 | Biological:
Epidemic | Across Canada | August 1, 2008 | 22 | 57 | 0 | Unknown |
 | Explosion:
Residential | Toronto ON | July 20, 2008 | 0 | 10 | 900 | Unknown |
| Meteorological - Hydrological:
Flood | James Bay ON | May 9, 2008 | 0 | 0 | 1200 | Unknown |
| Meteorological - Hydrological:
Flood | Albany River ON | April 25, 2008 | 0 | 0 | 1900 | Unknown |
| Meteorological - Hydrological:
Flood | Trent Hills ON | April 17, 2008 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Belleville ON | April 14, 2008 | 0 | 0 | 18 | Unknown |
| Meteorological - Hydrological:
Flood | Port Bruce ON | February 18, 2008 | 0 | 0 | 300 | Unknown |
 | Fire:
Non-Residential | Hamilton ON | June 3, 2007 | 0 | 0 | 345 | Unknown |
| Fire:
Non-Residential | Windsor ON | May 25, 2007 | 0 | 0 | 2000 | Unknown |
| Meteorological - Hydrological:
Wildfire | Northwest Ontario | May 13, 2007 | 0 | 0 | 300 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Russell ON | December 1, 2006 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Ontario and Quebec | October 29, 2006 | 0 | 0 | 0 | Unknown |
 | Hazardous Chemicals:
Fire | Amherstburg ON | August 15, 2006 | 0 | 3 | 1000 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Northern and Central Ontario | July 17, 2006 | 2 | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Flood | Kashechewan ON | April 23, 2006 | 0 | 0 | 1100 | Unknown |
 | Biological:
Infestation | Kashechewan ON | October 26, 2005 | Unknown | Unknown | 1100 | Unknown |
| Biological:
Epidemic | Toronto ON | September 24, 2005 | 23 | 112 | Unknown | Unknown |
| Meteorological - Hydrological:
Tornado | Southern Ontario | August 19, 2005 | 0 | 4 | 0 | $500,000,000 |
 | Transportation accident:
Air | Toronto, Ontario | August 2, 2005 | 0 | 33 | Unknown | Unknown |
| Meteorological - Hydrological:
Flood | Kashechewan ON | April 23, 2005 | 0 | Unknown | 200 | Unknown |
| Meteorological - Hydrological:
Flood | Peterborough, Ontario | July 14, 2004 | 0 | 0 | Unknown | Unknown |
| Meteorological - Hydrological:
Flood | Attawapiskat ON | May 19, 2004 | Unknown | Unknown | 1700 | $5,700,000 |
| Transportation accident:
Air | Off Pelee Island, Ontario | January 17, 2004 | 10 | 0 | Unknown | Unknown |
 | Infrastructure failure:
Energy | Ontario, Midwest and Northeast USA | August 14, 2003 | Unknown | Unknown | Unknown | Unknown |
| Biological:
Epidemic | Across Canada, largely in the Greater Toronto area | March 13, 2003 | 44 | 375 | 0 | Unknown |
| Transportation accident:
Rail | Tyendinaga Township First Nation ON | February 21, 2003 | Unknown | 2 | 300 | Unknown |
| Transportation accident:
Rail | Brantford ON | November 16, 2002 | 1 | 0 | 120 | Unknown |
 | Hazardous Chemicals:
Leak / Spill Release | Dryden ON | July 30, 2002 | 0 | 0 | 350 | Unknown |
| Meteorological - Hydrological:
Wildfire | Kee-Way-Win FN; Townships of Terrace Bay and Schrieber; Village of Rossport; Pays Plat FN; Deer Lake FN, ON | July 1, 2002 | 0 | 0 | 985 | Unknown |
| Fire:
Non-Residential | Kingsville ON | June 21, 2002 | 0 | 0 | 2500 | Unknown |
| Meteorological - Hydrological:
Flood | Municipalities of Ignace, Fort Frances, Rainy River, Alberton, Atikokan, Chapple, Dawson, Emo, La Valle, Lake of the Woods, Morley, Machin; Township of Sioux-Narrows - Nestor Falls, ON | June 9, 2002 | 0 | 0 | 0 | $6,975,854 |
| Meteorological - Hydrological:
Flood | Attawapiskat First Nation ON | May 1, 2002 | 0 | 0 | 1200 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Morley, Chapple, Dawson, Emo, Lake of the Woods, La Vallee, Rainy River, Fort Frances ON | July 31, 2001 | 0 | 0 | 0 | $869,596 |
 | Meteorological - Hydrological:
Drought | Across Canada, concentrated in Saskatchewan and Alberta | June 1, 2001 | 0 | 0 | 0 | Unknown |
| Biological:
Epidemic | Walkerton ON | May 19, 2000 | 6 | 2300 | 0 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Southern Ontario | April 20, 2000 | 0 | 1 | 0 | Unknown |
| Transportation accident:
Rail | Limehouse, Ontario | November 9, 1999 | 1 | 17 | 0 | Unknown |
| Transportation accident:
Rail | Key River, Ontario | September 23, 1999 | 0 | 4 | 5 | Unknown |
| Transportation accident:
Vehicle | Windsor ON | September 3, 1999 | 7 | 33 | 0 | Unknown |
 | Infrastructure failure:
Communications | Across Toronto, Canada, and internationally | July 16, 1999 | 0 | 2 | 0 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Kenora ON | June 18, 1999 | 0 | 0 | 12 | Unknown |
| Meteorological - Hydrological:
Wildfire | Beardmore ON | May 4, 1999 | 0 | 0 | 307 | Unknown |
| Transportation accident:
Rail | Thamesville ON | April 23, 1999 | 2 | 60 | 0 | Unknown |
| Meteorological - Hydrological:
Wildfire | East of Lake Winnipeg MB | March 5, 1999 | Unknown | Unknown | 1107 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Barrie ON | February 13, 1999 | 0 | 30 | 0 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Toronto ON | January 13, 1999 | 2 | 0 | 0 | $122,000,000 |
| Meteorological - Hydrological:
Winter Storm | Southern Ontario | January 3, 1999 | 11 | 7 | 0 | $168,469,000 |
| Meteorological - Hydrological:
Wildfire | Northern Ontario | July 4, 1998 | 0 | 0 | 1865 | Unknown |
| Meteorological - Hydrological:
Flood | Eastern Ontario and Quebec | March 28, 1998 | 0 | 0 | 3757 | $27,741,685 |
| Meteorological - Hydrological:
Winter Storm | Ontario, Quebec and New Brunswick | January 4, 1998 | 35 | 945 | 17800 | $4,635,720,433 |
| Transportation accident:
Rail | Toronto, Ontario | November 19, 1997 | 0 | 56 | Unknown | Unknown |
| Hazardous Chemicals:
Fire | Hamilton ON | July 10, 1997 | 0 | 0 | 4000 | Unknown |
| Meteorological - Hydrological:
Wildfire | Iroquois Falls, Kirkland Lake, Timmins areas ON | June 12, 1997 | 0 | 0 | 823 | Unknown |
| Meteorological - Hydrological:
Wildfire | Timmins ON | May 29, 1997 | 0 | 0 | 400 | Unknown |
| Meteorological - Hydrological:
Flood | Durham ON | January 9, 1997 | 0 | 0 | 200 | Unknown |
| Meteorological - Hydrological:
Flood | Ottawa ON | August 8, 1996 | 0 | 0 | 0 | $21,308,000 |
| Meteorological - Hydrological:
Flood | Atikokan ON | July 5, 1996 | 0 | 0 | 0 | $278,061 |
| Meteorological - Hydrological:
Flood | Timmins and Dufferin County ON | May 17, 1996 | 0 | 0 | 0 | $378,557 |
| Meteorological - Hydrological:
Tornado | Grey County, Wellington and Dufferin County ON | April 20, 1996 | 0 | 9 | 0 | $9,404,772 |
| Meteorological - Hydrological:
Storm - Unspecified / Other | South Dumfries ON | January 1, 1996 | 0 | 0 | 0 | $99,870 |
| Meteorological - Hydrological:
Winter Storm | Southern Ontario | December 10, 1995 | 1 | 0 | 50 | Unknown |
| Hazardous Chemicals:
Leak / Spill Release | Sudbury ON | November 16, 1995 | 0 | 20 | 0 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Hamilton ON | October 5, 1995 | 0 | 0 | 0 | $17,419,000 |
| Transportation accident:
Rail | Toronto ON | August 11, 1995 | 3 | 140 | 0 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Southern Ontario | July 13, 1995 | 0 | 0 | 0 | $56,910,000 |
| Transportation accident:
Rail | Brighton, Ontario | November 20, 1994 | 0 | 46 | Unknown | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Southern ON | August 28, 1994 | 0 | 0 | 0 | $7,876,000 |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Southern ON | January 28, 1994 | 0 | 0 | 0 | $6,799,000 |
| Meteorological - Hydrological:
Flood | Southern ON | January 16, 1994 | 0 | 0 | 0 | $14,299,000 |
 | Infrastructure failure:
Manufacturing / Industry | Kirkland Lake ON | November 26, 1993 | 2 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Quebec and Ontario | November 1, 1993 | 0 | 0 | 0 | Unknown |
| Hazardous Chemicals:
Leak / Spill Release | Windsor ON | October 17, 1993 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Ontario and Quebec | November 12, 1992 | 0 | 0 | 0 | $76,000,000 |
| Meteorological - Hydrological:
Flood | Elmira ON | August 28, 1992 | 0 | 0 | 0 | $4,738,539 |
| Meteorological - Hydrological:
Flood | Toronto ON | July 31, 1992 | 0 | 0 | 0 | $5,337,940 |
 | Hazardous Chemicals:
Derailment Release | Longlac ON | May 25, 1992 | 0 | 0 | 800 | Unknown |
| Meteorological - Hydrological:
Flood | Attawapiskat ON | May 18, 1992 | 0 | 0 | 1000 | Unknown |
| Hazardous Chemicals:
Leak / Spill Release | Sarnia ON | March 19, 1992 | 0 | 0 | 0 | Unknown |
| Hazardous Chemicals:
Leak / Spill Release | Corunna ON | January 21, 1992 | 0 | 0 | 0 | Unknown |
 | Meteorological - Hydrological:
Cold Event | Prairies Provinces and Ontario | January 1, 1992 | 0 | 0 | 0 | $2,000,000 |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Central Ontario | November 30, 1991 | 0 | 0 | 0 | $5,982,309 |
| Fire:
Residential | Jarvis ON | September 26, 1991 | 0 | 1 | 1300 | Unknown |
| Transportation accident:
Rail | North Bay, Ontario | September 9, 1991 | 0 | 71 | 0 | Unknown |
| Hazardous Chemicals:
Fire | Sarnia ON | July 22, 1991 | 0 | 0 | 5000 | Unknown |
| Meteorological - Hydrological:
Tornado | Sarnia ON | March 27, 1991 | 0 | 0 | 0 | $28,310,657 |
| Hazardous Chemicals:
Leak / Spill Release | Cochrane ON | January 11, 1991 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Tornado | Southern Ontario | August 29, 1990 | 0 | 6 | 0 | $792,167 |
| Hazardous Chemicals:
Fire | Harrow ON | July 23, 1990 | 0 | 0 | 0 | Unknown |
 | Arson:
Non-Residential | Hagersville ON | February 12, 1990 | 0 | 0 | 1700 | Unknown |
| Meteorological - Hydrological:
Cold Event | British Columbia to Ontario | December 18, 1989 | 7 | 0 | 0 | $536,488 |
 | Hazardous Chemicals:
Vehicle Release | Sudbury ON | October 2, 1989 | 2 | 1 | 0 | Unknown |
| Hazardous Chemicals:
Vehicle Release | Ottawa ON | September 12, 1989 | 1 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Harrow, Kent, Essex, Leamington counties ON | July 19, 1989 | 0 | 0 | 0 | $13,807,000 |
| Transportation accident:
Air | Dryden ON | March 10, 1989 | 24 | 45 | 0 | Unknown |
| Meteorological - Hydrological:
Cold Event | Yukon to Ontario | January 30, 1989 | 13 | 100 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Albany and Attawapiskat River ON | January 1, 1989 | 0 | 0 | 1000 | Unknown |
| Hazardous Chemicals:
Derailment Release | Sarnia ON | January 1, 1989 | 0 | 0 | 250 | Unknown |
| Hazardous Chemicals:
Fire | Dundas ON | January 1, 1989 | 0 | 0 | 200 | Unknown |
| Hazardous Chemicals:
Fire | Niagara Falls ON | January 1, 1989 | 0 | 0 | 100 | Unknown |
| Hazardous Chemicals:
Fire | Courtland ON | December 17, 1988 | 0 | 0 | 500 | Unknown |
| Meteorological - Hydrological:
Heat Event | Ontario and Manitoba | July 5, 1988 | 14 | 0 | 0 | Unknown |
| Hazardous Chemicals:
Leak / Spill Release | Sarnia ON | May 24, 1988 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Wildfire | Whitedog Lake ON | January 1, 1988 | 0 | 0 | 500 | Unknown |
| Meteorological - Hydrological:
Flood | Goulais River ON | January 1, 1988 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Wildfire | Valrita-Harty ON | May 13, 1987 | 0 | 0 | 800 | Unknown |
| Meteorological - Hydrological:
Flood | Lake St. Clair ON | April 4, 1987 | 0 | 0 | 50 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Eastern Ontario and Southwestern Quebec | December 24, 1986 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Winisk ON | May 16, 1986 | 2 | 0 | 129 | Unknown |
| Hazardous Chemicals:
Derailment Release | Timmins ON | March 31, 1986 | 0 | 0 | 5000 | Unknown |
| Hazardous Chemicals:
Fire | Stoney Creek ON | January 21, 1986 | 0 | 0 | 1000 | Unknown |
| Geological:
Landslide | Brantford ON
| January 1, 1986 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Lake Huron and Lake Erie ON | December 2, 1985 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Tornado | Hopeville to Barrie ON | May 31, 1985 | 12 | 500 | 800 | $83,992,000 |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Windsor ON | May 30, 1985 | 5 | 0 | 0 | $16,390,000 |
| Meteorological - Hydrological:
Flood | Lake Erie ON | March 31, 1985 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Chatham ON | February 23, 1985 | 0 | 0 | 30 | Unknown |
| Hazardous Chemicals:
Vehicle Release | Smiths Falls ON | January 1, 1985 | 0 | 0 | 200 | Unknown |
| Meteorological - Hydrological:
Tornado | London ON | September 2, 1984 | 0 | 30 | 0 | Unknown |
| Meteorological - Hydrological:
Tornado | Eastern Ontario and Western Quebec | July 15, 1984 | 1 | 43 | 0 | Unknown |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Chesley ON | April 30, 1984 | 0 | 0 | 0 | $39,066,000 |
| Meteorological - Hydrological:
Flood | Southern Ontario | February 13, 1984 | 2 | 0 | 150 | Unknown |
| Hazardous Chemicals:
Fire | Fort Frances ON | January 1, 1984 | 0 | 0 | 200 | Unknown |
| Meteorological - Hydrological:
Drought | Ontario | July 14, 1983 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Tornado | Reeces Corners ON | May 3, 1983 | 0 | 0 | 0 | $111,591 |
 | Terrorist:
Bomb Attacks | Toronto ON | October 14, 1982 | 0 | 10 | 0 | Unknown |
| Hazardous Chemicals:
Derailment Release | Orillia ON | February 28, 1982 | 0 | 0 | 1200 | Unknown |
| Meteorological - Hydrological:
Cold Event | Across Canada | January 5, 1982 | 0 | 0 | 0 | Unknown |
| Hazardous Chemicals:
Derailment Release | Medonte ON | January 1, 1982 | 0 | 0 | 200 | Unknown |
| Meteorological - Hydrological:
Flood | Southeastern ON | February 18, 1981 | 0 | 0 | 0 | $1,668,590 |
| Fire:
Residential | Mississauga ON | July 14, 1980 | 21 | 35 | 0 | Unknown |
| Meteorological - Hydrological:
Wildfire | Red Lake ON | June 1, 1980 | 0 | 0 | 5000 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | March 21, 1980 | 0 | 0 | 0 | Unknown |
| Explosion:
Non-Residential | Essex, Ontario | February 14, 1980 | 0 | 2 | Unknown | Unknown |
| Fire:
Residential | Hamilton ON | January 1, 1980 | 0 | 0 | 600 | Unknown |
| Hazardous Chemicals:
Derailment Release | Mississauga ON | November 10, 1979 | 0 | 0 | 225000 | Unknown |
| Meteorological - Hydrological:
Tornado | Woodstock ON | August 7, 1979 | 2 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Central Ontario | May 12, 1979 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Central Ontario | April 24, 1979 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Southern Ontario | April 5, 1979 | 9 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Southern Ontario | April 4, 1979 | 13 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southwestern Ontario | March 5, 1979 | 0 | 0 | 0 | Unknown |
| Hazardous Chemicals:
Leak / Spill Release | North York ON | February 21, 1979 | 0 | 0 | 5000 | Unknown |
| Meteorological - Hydrological:
Cold Event | Yukon to Ontario | February 8, 1979 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Southwestern Ontario | January 26, 1978 | 8 | 400 | 0 | Unknown |
| Meteorological - Hydrological:
Drought | Central Ontario | January 1, 1978 | 0 | 0 | 0 | Unknown |
| Fire:
Non-Residential | Cobalt, Ontario | May 23, 1977 | 0 | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Flood | Southern and Central Ontario | March 13, 1977 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Niagara Peninsula ON | January 28, 1977 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Toronto ON | August 27, 1976 | 0 | 0 | 0 | Unknown |
| Transportation accident:
Vehicle | Toronto, Ontario | December 12, 1975 | 10 | 20 | Unknown | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Lake Superior ON | November 10, 1975 | 29 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Cambridge/Waterloo Region ON | May 17, 1974 | 0 | 0 | 0 | Unknown |
 | Civil Incident:
Disturbance / Demonstrations | Toronto, Ontario | April 7, 1974 | 0 | 56 | Unknown | Unknown |
| Meteorological - Hydrological:
Tornado | Windsor ON | April 3, 1974 | 9 | 30 | 0 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Barrie ON | March 18, 1973 | 12 | 43 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Lake Huron ON | March 1, 1973 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Drought | Ontario | January 1, 1973 | 0 | 0 | 0 | Unknown |
 | Meteorological - Hydrological:
Storm Surge | Great Lakes | November 14, 1972 | 0 | Unknown | Unknown | Unknown |
 | Meteorological - Hydrological:
Geomagnetic Storm | Across Canada | August 4, 1972 | 0 | 0 | Unknown | Unknown |
| Meteorological - Hydrological:
Tornado | Sudbury, Lively, Coppercliff and Field ON | August 20, 1970 | 6 | 200 | 0 | $75,000 |
| Transportation accident:
Air | Toronto ON | July 5, 1970 | 109 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Central Ontario | June 27, 1970 | 0 | 0 | 0 | Unknown |
| Explosion:
Non-Residential | Malton, Ontario | October 25, 1969 | 1 | 22 | Unknown | Unknown |
| Fire:
Residential | Dunnville ON | January 1, 1969 | 13 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Lambeth ON | August 19, 1968 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southwestern and Southern Ontario | February 2, 1968 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Southern Ontario | January 13, 1968 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Tornado | Huron and Perth counties ON | April 17, 1967 | 0 | 0 | 0 | Unknown |
| Transportation accident:
Vehicle | Windsor, Ontario | December 21, 1966 | 8 | 16 | Unknown | Unknown |
 | Infrastructure failure:
Transportation | Ottawa ON | January 1, 1966 | 9 | 57 | 0 | Unknown |
 | Transportation accident:
Marine | Lake Huron ON | January 1, 1966 | 28 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Drought | Ontario, Quebec and New Brunswick | January 1, 1965 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Drought | Ontario and Quebec | January 1, 1964 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Drought | Ontario | January 1, 1963 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Timmins ON | August 31, 1961 | 5 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southern and Central Ontario | May 9, 1960 | 0 | 0 | 0 | Unknown |
| Explosion:
Non-Residential | Windsor ON | January 1, 1960 | 11 | 0 | 0 | Unknown |
| Fire:
Residential | Lanark ON | January 1, 1959 | 0 | 0 | 122 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | August 30, 1956 | 0 | 0 | 0 | Unknown |
| Transportation accident:
Air | Orleans, Ontario | May 15, 1956 | 15 | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Wildfire | Quebec and Ontario | July 1, 1955 | 0 | 0 | 0 | $24,402,775 |
 | Meteorological - Hydrological:
Hurricane / Typhoon / Tropical Storm | Toronto ON | October 14, 1954 | 81 | 0 | 7472 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | February 15, 1954 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Heat Event | Toronto ON | August 24, 1953 | 1 | 186 | 0 | Unknown |
| Transportation accident:
Vehicle | Morrisburg, Ontario | July 31, 1953 | 20 | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Tornado | Sarnia ON | May 21, 1953 | 7 | 40 | 500 | Unknown |
| Biological:
Epidemic | Canada | April 18, 1953 | 506 | 9037 | 0 | Unknown |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Lake Superior ON | January 1, 1953 | 17 | 0 | 0 | Unknown |
| Biological:
Epidemic | Canada | June 1, 1952 | 311 | 4755 | 0 | Unknown |
| Transportation accident:
Rail | Coniston ON | February 9, 1951 | 9 | 31 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | April 4, 1950 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | March 24, 1950 | 0 | 0 | 0 | Unknown |
 | Fire:
Vehicle | Toronto ON | September 17, 1949 | 118 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Wildfire | Mississagi ON | May 1, 1948 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | March 16, 1948 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southern ON | April 5, 1947 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Tornado | Windsor to Tecumseh ON | June 17, 1946 | 17 | 100 | 0 | Unknown |
| Meteorological - Hydrological:
Winter Storm | Toronto ON | December 11, 1944 | 21 | 0 | 0 | Unknown |
 | Geological:
Earthquake | Cornwall, ON, Massena, NY | September 5, 1944 | 0 | 1 | Unknown | Unknown |
| Arson:
Non-Residential | Hamilton, Ontario | May 24, 1944 | 10 | 47 | Unknown | Unknown |
| Transportation accident:
Rail | Aldershot ON | September 10, 1943 | 12 | 2 | 0 | Unknown |
| Transportation accident:
Rail | Almonte ON | December 27, 1942 | 36 | 155 | 0 | Unknown |
| Transportation accident:
Marine | Beausoleil Island, Ontario | September 21, 1942 | 25 | Unknown | Unknown | Unknown |
| Transportation accident:
Air | Lawrence Station, Ontario | October 30, 1941 | 20 | 0 | Unknown | Unknown |
| Meteorological - Hydrological:
Hurricane / Typhoon / Tropical Storm | Southwestern Ontario | September 25, 1941 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Wildfire | Gogama ON | May 14, 1941 | 0 | 0 | 0 | Unknown |
| Transportation accident:
Air | Armstrong, Ontario | February 6, 1941 | 12 | 0 | Unknown | Unknown |
| Meteorological - Hydrological:
Geomagnetic Storm | Across Canada | March 24, 1940 | 0 | 0 | Unknown | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Great Lakes: Lake Ontario | January 1, 1940 | 69 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Wildfire | Rainy River and Dance Township ON | October 10, 1938 | 17 | 0 | 155 | Unknown |
| Biological:
Epidemic | Canada | June 1, 1937 | 200 | 3905 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | April 26, 1937 | 0 | 0 | 4000 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | January 13, 1937 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Heat Event | Across Canada | July 5, 1936 | 1180 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | March 10, 1936 | 0 | 0 | 0 | Unknown |
| Transportation accident:
Rail | Hamilton, Ontario | December 25, 1934 | 15 | 45 | Unknown | Unknown |
| Meteorological - Hydrological:
Cold Event | Manitoba to Atlantic Canada | December 1, 1933 | 15 | 0 | 0 | Unknown |
| Fire:
Non-Residential | Cornwall, Ontario | August 7, 1933 | 0 | 0 | 0 | Unknown |
| Biological:
Epidemic | St. Catharines, Ontario | June 22, 1931 | 3 | 457 | 0 | Unknown |
| Biological:
Epidemic | Ontario | July 1, 1930 | 61 | 671 | 0 | Unknown |
| Geological:
Landslide | Crerar ON | June 27, 1930 | 8 | 0 | 0 | Unknown |
| Geological:
Landslide | Capreol ON | June 26, 1930 | 4 | 0 | 0 | Unknown |
| Biological:
Epidemic | Ontario | June 29, 1929 | 26 | 532 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | April 5, 1929 | 0 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southern Ontario | January 18, 1929 | 0 | 0 | 0 | Unknown |
| Transportation accident:
Marine | Georgian Bay | September 18, 1928 | 16 | Unknown | Unknown | Unknown |
| Explosion:
Non-Residential | Timmins, Ontario | February 10, 1928 | 39 | 0 | 0 | Unknown |
| Biological:
Epidemic | Chatham, Ontario | July 1, 1927 | 7 | 109 | 0 | Unknown |
| Biological:
Epidemic | Across Canada | March 1, 1927 | Unknown | 0 | 0 | Unknown |
| Biological:
Epidemic | Windsor, Ontario | February 2, 1924 | 32 | 35 | 0 | Unknown |
| Biological:
Epidemic | Cochrane, Ontario | March 19, 1923 | 59 | 823 | 0 | Unknown |
| Meteorological - Hydrological:
Wildfire | Haileybury ON | September 30, 1922 | 43 | 0 | 11000 | Unknown |
| Transportation accident:
Marine | Caribou Island, Ontario | April 19, 1922 | 21 | 0 | Unknown | Unknown |
| Transportation accident:
Marine | Whitefish Bay, Lake Superior | August 20, 1920 | 29 | 4 | 0 | Unknown |
| Meteorological - Hydrological:
Flood | Southwestern Ontario | March 17, 1920 | 0 | 0 | 0 | Unknown |
| Transportation accident:
Marine | Lake Ontario | December 3, 1918 | 12 | 0 | 0 | Unknown |
| Transportation accident:
Marine | Lake Superior | November 24, 1918 | 76 | 0 | 0 | Unknown |
| Fire:
Non-Residential | Trenton ON | October 12, 1918 | 0 | 0 | 0 | Unknown |
| Biological:
Epidemic | Across Canada | January 1, 1918 | 50000 | 2000000 | 0 | Unknown |
| Transportation accident:
Marine | Simcoe Island, Ontario | August 8, 1917 | 12 | 2 | Unknown | Unknown |
| Explosion:
Non-Residential | Peterborough, Ontario | December 11, 1916 | 24 | Unknown | Unknown | Unknown |
| Transportation accident:
Marine | Lake Erie | October 20, 1916 | 54 | 0 | Unknown | Unknown |
| Meteorological - Hydrological:
Wildfire | Cochrane and Matheson ON | July 29, 1916 | 233 | 0 | 8000 | Unknown |
| Biological:
Epidemic | Windsor, Ontario | May 14, 1916 | 1 | 37 | 0 | Unknown |
| Fire:
Residential | Ottawa ON | February 3, 1916 | 7 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Storms and Severe Thunderstorms | Lakes Huron, Erie and Ontario | November 7, 1913 | 270 | 0 | 0 | Unknown |
| Transportation accident:
Rail | Ottawa, Ontario | June 25, 1913 | 8 | 50 | Unknown | Unknown |
| Meteorological - Hydrological:
Storm - Unspecified / Other | Ontario | March 13, 1913 | 7 | 0 | 0 | Unknown |
| Meteorological - Hydrological:
Heat Event | Eastern Canada | July 8, 1912 | 3 | 0 | 0 | Unknown |
| Biological:
Epidemic | Ottawa, Ontario | June 1, 1912 | 91 | 1378 | 0 | Unknown |
| Transportation accident:
Marine | Key Harbour, Ontario | August 21, 1911 | 10 | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Wildfire | Cochrane ON | July 11, 1911 | 73 | 0 | 200 | Unknown |
| Biological:
Epidemic | Ottawa, Ontario | January 1, 1911 | 83 | 987 | 0 | Unknown |
| Fire:
Non-Residential | Cornwall, Ontario | April 29, 1910 | 10 | Unknown | Unknown | Unknown |
| Transportation accident:
Rail | Spanish River ON | January 21, 1910 | 63 | 20 | 0 | Unknown |
| Transportation accident:
Marine | Lake Erie | December 7, 1909 | 31 | 0 | Unknown | Unknown |
| Meteorological - Hydrological:
Geomagnetic Storm | Across Canada | September 25, 1909 | 0 | 0 | Unknown | Unknown |
| Fire:
Non-Residential | Cobalt, Ontario | July 2, 1909 | 2 | 6 | Unknown | Unknown |
| Fire:
Non-Residential | Burk's Falls, Ontario | June 20, 1908 | 0 | 1 | Unknown | Unknown |
| Meteorological - Hydrological:
Flood | Port Arthur, Ontario | May 28, 1908 | 5 | Unknown | Unknown | Unknown |
| Transportation accident:
Rail | Caledon, Ontario | September 3, 1907 | 7 | 114 | Unknown | Unknown |
| Explosion:
Non-Residential | Essex, Ontario | August 10, 1907 | 2 | Unknown | Unknown | Unknown |
| Explosion:
Non-Residential | London, Ontario | July 16, 1907 | 7 | 40 | Unknown | Unknown |
| Fire:
Non-Residential | Toronto ON | April 19, 1904 | 0 | 0 | 0 | Unknown |
| Transportation accident:
Rail | Sand Point, Ontario | February 9, 1904 | 13 | 19 | Unknown | Unknown |
| Meteorological - Hydrological:
Geomagnetic Storm | Across Canada | October 31, 1903 | 0 | 0 | Unknown | Unknown |
| Transportation accident:
Rail | Wanstead, Ontario | December 27, 1902 | 31 | 35 | Unknown | Unknown |
| Transportation accident:
Marine | Port Burwell, Ontario | November 23, 1902 | 18 | 0 | Unknown | Unknown |
| Transportation accident:
Marine | Lake Superior | November 21, 1902 | 21 | 0 | Unknown | Unknown |
| Meteorological - Hydrological:
Tornado | Chesterfield, Ontario | July 17, 1902 | 5 | 12 | 0 | Unknown |
| Fire:
Non-Residential | Paris, Ontario | September 12, 1900 | 0 | Unknown | Unknown | Unknown |
| Meteorological - Hydrological:
Hurricane / Typhoon / Tropical Storm | Eastern Canada | September 11, 1900 | 54 | Unknown | Unknown | Unknown |
| Fire:
Non-Residential | Ottawa ON and Hull QC | April 26, 1900 | 7 | 0 | 15000 | Unknown |