Experts raise concerns over the Quebec government’s lack of regular monitoring and maintenance of flood protection structures. This issue gained attention after a natural dike rupture in Sainte-Marthe-sur-le-Lac in 2019, leading to severe flooding. Despite expert recommendations to establish a comprehensive flood protection strategy, Quebec has yet to create an inventory of flood protection structures and their fragility.
Climate change poses additional challenges, increasing the frequency and severity of flooding events. Professor Philippe Gachon of Université du Québec à Montréal highlights the need for improved knowledge and tools to address the evolving flood risks.
The Environment Quality Act aims to create a public registry for flood protection structures once governance and responsibility are defined. Municipalities will provide information for this registry. New flood risk maps are also in development, considering flood protection measures, climate change impacts, and potential hazards.
However, uncertainties remain regarding the classification system for flood risk areas. Professor Pascale Biron of Concordia University calls for improved mapping transparency and the inclusion of dike-protected areas in the risk zones. Sainte-Marthe-sur-le-Lac Mayor François Robillard anticipates the municipality’s designation as an at-risk area.
While the proposed new maps provide valuable information, concerns linger over their focus solely on waterway overflow and the exclusion of meteorological factors. Gachon emphasizes the need for comprehensive monitoring and research to effectively manage flood risks.
