Thousands of letters from Ontarians and nature groups call for a new Conservation Area in Lake Ontario

Nature Canada is pointing to massive public support for protecting Lake Ontario by sending a joint letter to Ontario and federal environment ministers, urging them to green-light a feasibility study for the creation of a National Marine Conservation Area (NMCA) by the end of 2025. Signed by nearly 60 nature groups, businesses, and community groups from around Lake Ontario, the letter underscores widespread support for safeguarding one of North America’s most critical freshwater ecosystems. Complementing this effort, thousands of Canadians have sent letters to ministers and local MPs, amplifying the call to protect Lake Ontario.

“Canadians are standing together to demand urgent action for Lake Ontario,” said Dylana Thompson, Protected Areas Organizer for Nature Canada. “This campaign represents a powerful collective voice calling on our leaders to prioritize the health of this critical ecosystem.”

A Commitment to Protect All the Great Lakes
Canada’s commitment to protecting 30 per cent of its land and freshwater by 2030 includes safeguarding the Great Lakes, which hold 84 per cent of North America’s freshwater supply and support over 200 species at risk. While Canada has established protections for Lake Superior through an NMCA and for Georgian Bay with Fathom Five National Marine Park, Lake Ontario’s Canadian waters remain vulnerable. Meanwhile, the U.S. has recently secured conservation measures for its side of Lake Ontario, further underscoring the need for Canada to act.

Why Lake Ontario Matters
Lake Ontario is a biodiversity hotspot, featuring Key Biodiversity Areas (KBAs) such as Prince Edward Point, home to an International Monarch Butterfly Reserve and a migratory bird observatory. These habitats are vital for countless species, yet they face growing threats from pollution, invasive species, and urbanization.

“Protecting Lake Ontario is a pivotal step in Canada’s broader commitment to safeguarding all its Great Lakes,” said Julia Laforge, Protected Areas Campaign Manager at Nature Canada. “This initiative is abou t ensuring that these waters, rich in biodiversity and cultural importance, are preserved for future generations.”

Nature Canada is urging federal and provincial governments to work together on a feasibility study . A feasibility study would serve as a critical first step toward permanent protections for Lake Ontario.

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