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Lake Ontario Waterfront

The Toronto and Region Conservation Authority (TRCA) has jurisdiction over 72 kilometres of Lake Ontario waterfront spanning from the City of Toronto/City of Mississauga border in the west to the Town of Ajax/Town of Whitby border in the east. Across this shoreline, nine watersheds drain into Lake Ontario, from west to east. They are: Etobicoke Creek, Mimico Creek, Humber River, Don River, Highland Creek, Rouge River, Duffins Creek, Petticoat Creek, and Carruthers Creek.

The sediment comprising the Toronto Region shoreline is generally a mixture of sands, silts, clays, tills, and gravels, which are highly erodible. As a result, the shoreline has been and continues to be, modified by wave action, ground water conditions, wind erosion and numerous other factors. Serious loss of property and threats to homes, roads and services can and have occurred as a result of these processes. Toronto and Region Conservation is committed to maintaining shoreline protection and restoring terrestrial and aquatic habit along the shoreline in the Toronto Region while providing recreational opportunities through the design and construction of waterfront parks. Integrated shoreline management is essential to efforts to acheive a waterfront that is clean, green, accessible, diverse and attractive.


The Shorelines e-newsletter highlights the work of TRCA and its partners along the Lake Ontario waterfront, providing readers with up to date information about waterfront projects, upcoming events, and community profiles.

Do you have an interesting story to share or event happening along the waterfront? The Shorelines e-newsletter would love to promote your work in our future issues.

Please contact us at with any comments, questions, articles, pictures or events you would like us to include related to the Lake Ontario waterfront. Click on the link below to view the most recent issue of Shorelines, the official e-newsletter of the Lake Ontario Waterfront.

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