How can B.C. protect itself from the next atmospheric river?
Photo: Shane MacKichan /CBC News
October 22, 2024
Dr. Kai Chan, a professor at UBC’s Institute for Resources, Environment and Sustainability, advocates for a more nature-based approach to stormwater management. Instead of relying solely on human-made infrastructure like storm drains and pipes, Chan suggests rerouting water through ecosystems. He emphasizes the importance of “daylighting” buried streams and implementing rain gardens—vegetated areas designed to absorb and filter runoff. These solutions can reduce flood risk while restoring natural habitats, improving urban resilience to extreme weather.
Chan points out that B.C.’s historical practice of channeling rivers and streams into underground systems has exacerbated stormwater challenges. “Many of the streams in Vancouver have been buried,” he explains, “which means all the water is coming off roads and flooding storm drains.” By integrating natural water management techniques, municipalities could mitigate flooding, reduce infrastructure costs, and enhance biodiversity in urban areas.