[24] The Sheep Creek floods in Okotoks cut gas mains left Calgarians without cooking fuel.
"[2] "As the water receded, it exposed portions of the ocean floor that were normally submerged and caused boats docked at various harbours to tumble over onto their sides.
The tsunami destroyed many south coastal communities on the Burin Peninsula, killing 27 or 28 people,[28] sweeping away homes, businesses, wharves, and fishing boats, and leaving 10,000 more homeless.
As well, two transcontinental rail lines and the Trans-Canada Highway had been built through the valley, and the province's major airport had been established in Richmond.
[35] The Humber River, located in the west end of the city, caused the most destruction, as a result of an intense flash flood.
In May 1974, several communities along the Grand River were flooded as a result of 50 mm of rain falling in the upper part of the watershed, quickly overflowing reservoirs which had been filled to capacity in anticipation of the dry summers months.
In September 1979, Tropical Storm David caused an estimated $881,600 CAD (1998) in flood damages in the area around Moncton, New Brunswick.
A spring ice jam on the Winisk River caused flood waters to reach as far as 6 km (3.7 miles) inland, sending every structure but two into the Hudson Bay.
In Manitoba flood waters reached 21.6 ft (6.6 m), which caused 28,000 people to be evacuated and $500 million CAD in damage to property and infrastructure.
To compensate, the province broke operational rules for the floodway, as defined in legislation, during the night of April 30 / May 1, preventing waters in Winnipeg from rising above the designed limit of 24.5 ft (7.5 m) above the "James Avenue datum", but causing additional flooding upriver.
Highway and rail bridges at Rutherford Creek were washed out by the torrent coming down that watercourse from the Pemberton Icecap, wrecking three vehicles and taking five lives.
In addition to the Rutherford Creek bridges, another was washed out in the Cheakamus Canyon area of Highway 99, with the resort municipality of Whistler being cut off from the outside world during this storm.
"[47]: i "Newfoundland and Labrador experienced a severe spring storm on March 31, 2005 with record-setting snow and rain that resulted in flood damage to homes and provincial and local government infrastructure, primarily in the Burin Peninsula.
[39] In May 2012, a "storm system that affected Thunder Bay[54] and moved through to Montreal[55] resulted in CAD 260 million in insured damages.
"[47]: i In July, 2012, a "storm moved through southern Ontario affecting several neighbourhoods in Hamilton and Ottawa, resulting in CAD 90 million in insured damages.
[14] Only the floods of 1879 and 1897 in then Fort Calgary has higher peak rates, estimated at 2,265 m3/s (80,000 cu ft/s) based on high-water marks.
The flooding caused by the rapid spring snow melt, coupled with frozen ground, and several heavy rain events that resulted in abnormally high cumulative rainfall for April and May.
[69] On November 14, 2021, an atmospheric river brought heavy rains to parts of British Columbia, Canada, and neighbouring Washington, United States, causing flooding and mudslides.
A "general lack of a detectable trend signal", meaning no overall change in extreme, short-duration rainfall patterns, was observed.
In March and April, significant increases in streamflow were observed suggesting the potential for greater spring flooding in large, gauged river systems.
"[8] In the same report McBean noted that "the recent spike in extreme weather-related events" in Canada "resulted in social and economic consequences for individuals, governments, and home and business insurers around the country.
Eligible expenses include the cost of evacuating residents, restoring infrastructure and public works, and fixing basic and essential personal property.
The 2012 "federal budget set aside almost CAD100 million to help the provinces and territories with the cost of permanent flood mitigation projects.
In their report they described how, "In Alberta, major floods along rivers and streams have resulted in loss of lives and hundreds of millions of dollars in damages.
For a large flood event, the federal government pays up to 90% of the disaster assistance funds and, therefore, should have an interest in a strategy to reduce economic losses.
"[89] The Institute for Catastrophic Loss Reduction (ICLR) ’s mission "is to reduce the loss of life and property caused by severe weather and earthquakes through the identification and support of sustained actions that improve society’s capacity to adapt to, anticipate, mitigate, withstand and recover from natural disasters.
[91] After the 1954 flood in Toronto caused by Hurricane Hazel, Ontario "responded with strict floodplain protection legislation.
The berm is finished as a hilly park with pathways and prairie grasses overlooking the mouth of the Don River, demonstrating the integration of soft and hard engineering practices.
"[8] Gail Krantzberg, Professor and Director, Dofasco Centre for Engineering and Public Policy, McMaster University and United Nations University (UNU), argued that, "Our water infrastructure is becoming crippled, some would argue is severely crippled, and our institutions are not making the investments that we need in the face of demographic growth and the projections of climate change impacts on the hydrologic cycle.
"[95]: 4 She explains that soft engineering, like reducing the amount of paving is not enough given the fundamental problem of old infrastructure inadequate in the face of storms that caused flooding in Calgary and Toronto in June and July 2013.