Sumas Lake: Ancient Flood Solution or Future Disaster?

The possibility of restoring the ancient Sumas Lake in British Columbia is being revisited as a potential solution to the growing risk of flooding. This region, particularly Abbotsford and the Semá:th First Nation territory, experienced severe flooding in mid-December, recalling a similar catastrophe in 2021 that caused over $450 million in insurable property damage. Researchers propose that reintroducing part of the lake could offer a more sustainable approach than continuous infrastructure upgrades.

A 2024 study explored the feasibility of this restoration, estimating the cost at approximately $1 billion for property buyouts. This figure is notably less than the projected $2.4 billion for proposed dike enhancements and new pumping stations by the City of Abbotsford. However, the study was reportedly dismissed by local authorities who prioritize traditional flood protection measures, despite their uncertain long-term efficacy.

While the City of Abbotsford has sought $1.6 billion in federal funding for its flood prevention plan, this request was rejected due to the fund's limited resources. Indigenous leaders emphasize the need for federal government involvement not just in funding, but also in decision-making for adaptation strategies. Balancing agricultural economic interests with ecosystem health remains a key challenge in finding a solution.