Protecting nature can safeguard cities from floods
Photo: Everyday Science / scientificinquirer
November 26, 2024
A recent study led by Dr. Matthew Mitchell of the faculty of forestry and the faculty of land and food systems highlights how safeguarding key watersheds in Canada can significantly reduce the risk of flooding in urban areas, protecting millions of lives and vital infrastructure. “This is the first national study to assess the role of Canadian ecosystems in flood prevention and to identify where conservation could have the greatest impact,” Dr. Mitchell explains. By preserving just five percent of the country’s most crucial watersheds, cities can mitigate rainwater runoff, shield homes, and safeguard agricultural lands.
The research emphasizes the effectiveness of nature-based solutions, such as forests, wetlands, and riparian zones, in managing flood risks while also reducing reliance on costly infrastructure like dams. These ecosystems not only absorb water but also improve water quality and support wildlife. As Dr. Mitchell puts it, “Conserving nature isn’t just about biodiversity—it’s also about protecting communities and making cities more resilient to climate change.” The study underscores the urgency of prioritizing these high-impact areas, calling for stronger conservation policies and investments to enhance urban resilience in the face of a changing climate.