Two years after the devastating floods of spring 2017, Eastern Canada is once again subject to bad weather since last week. Significant spring floods affect the Beauce region, south of Quebec City with a total of more than 2,500 houses flooded and some 1,500 isolated despite a significant drop in the water level. These floods also made a victim Saturday in Pontiac, west of Ottawa, where a septuagenarian fell with her vehicle into a flooded watercourse. Since this weekend, 800 soldiers were deployed in the affected areas to distribute sandbags and evacuate hundreds of people.
Rain and snow melt
These large-scale floods are the result of heavy rains that hit eastern Canada last week with totals that occasionally exceeded 100 mm but they alone would not have had such consequences. It is the combination of these precipitations with the melting of the snow which explains the extent of these bad weather. After a snowier winter than the average in recent years, the amount of snow that melted and will continue to melt is greaterall this water coming directly downstream.
According to Quebec Prime Minister François Legault who went there, "we must face the facts with global warming, there are events that occur more frequently than in the past", while suggesting that residents will eventually have to move. The government also called on residents of the affected areas to "not take unnecessary risks" and to respect the instructions of local authorities.
New aggravation expected Wednesday
Despite a drop in the water level of 40 to 50 cm in some areas, the concern remains due to new rains expected Wednesday. According to the latest forecasts, they should bring between 15 and 20 mm, or 15 to 20 liters of water / m², modest amounts but which will help stop the recession and may even increase the levels of lakes and rivers. Otherwise, with the sharp rise in temperatures expected in the coming days, snowmelt is expected to accelerate, which will also contribute to the rise of the region's rivers but also Lake Saint-Pierre, north of the Mauricie.
Durably dry weather could set in next week in much of Canada, giving people hope some of whom have just experienced their second flood in less than two years.