The Don of a New Community
As Toronto’s downtown experiences continued population growth, the Port Lands remains the largest significant undeveloped space in the heart of Canada’s biggest city. Formerly the largest natural wetland in Lake Ontario and now primarily an underutilized industrial area, the Port Lands has the potential to transform Toronto and support the city’s competitiveness. Working together over the last decade, Waterfront Toronto, Toronto and Region Conservation Authority, and the City of Toronto have developed a plan to naturalize the mouth of the Don River, providing critical flood protection and unlocking the potential of the Port Lands.
Hydraulic Modelling – Pre and Post Implementation of the Flood Protection Solution
The Delft3D hydraulic model was used to determine the extent of flooding in the Port Lands that would occur under existing conditions if a Hurricane Hazel-like flood event were to occur in the Don Watershed. The following video depicts the 290 hectares of land that would be flooded from the Don River under this scenario. These lands would extend from Eastern Avenue out to Leslie Street, down to the Ship Channel and then east to the Inner Harbour. The length of the arrows in the video provides information on the relative flow velocities that would occur. The flood protection components in the West Don Lands are also included removing flooding to the west of the Don River.
This model was then used to depict the extent of flooding that would occur under the same Hurricane Hazel-like event, following implementation of Phases 1, 2 and 3 of the Don Mouth Naturalization and Port Lands Flood Protection Project. The video below shows that approximately 250 hectares of land is no longer at risk due to flooding from the Don River as a result of the proposed works, with the majority of the remaining 40 hectares of flood vulnerable lands being located within the river valley system that is created by the implementation of the Project.
To view images related to the various components of the Don Mouth Naturalization and Port Lands Flood Protection Project, please visit Waterfront Toronto’s website by clicking the links below.