Basement Flooding Study Area 53 has experienced basement and recurring surface flooding during past extreme storm events. The study area is located between Lake Shore Boulevard West, Marine Parade Drive, Humber Bay Park Road West and Canadian National rail line.

The study will determine the contributing factors for surface and basement flooding in the area and recommend solutions to improve the City’s sewer system and overland drainage routes in order to mitigate flooding problems.

Based on investigations of drainage and flooding, the City has evaluated a number of alternative solutions and is recommending upsizing the storm sewer under Lake Shore Boulevard West from Burlington Street to Mimico Creek and moving the sewer outfall to help to manage stormwater run-off.

 

For more information on the recommended sewer improvements along Lake Shore Avenue West near Mimico Creek, please check Public Consultation section.

The study area is located between Lake Shore Boulevard West, Marine Parade Drive, Humber Bay Park Road West and Canadian National Rail line. 

The study area is located between Lake Shore Boulevard West, Marine Parade Drive, Humber Bay Park Road West and Canadian National Rail line.

 

 

  • During heavy rain, sewers can become overloaded with stormwater runoff. This puts pressure on the City’s sewer systems and overland drainage routes, such as roads, local rivers and streams, which can lead to basement flooding.
  • Potential solutions to address flooding may include:
    • Upsize sewers
    • Underground storage
    • New or upgrade pumping stations
    • Wet/dry ponds, where space allows

September 2022

Notice of Study Commence and Consult Area 53 Lake Shore/Mimico Creek

The City of Toronto is studying ways to help reduce future surface and basement flooding in your area. Through our investigations of drainage and flooding, the City has evaluated a number of alternative solutions and is recommending upsizing the storm sewer under Lake Shore Boulevard West from Fleeceline Road to the existing storm outfall located between Humber Bay Park Road West and Mimico Creek. The proposed works also include upsizing the existing Mimico Creek outfall at Humber Bay Park (refer to below map), installation of high capacity inlets on Lake Shore Boulevard West, and installation of inlet controls on Granite Court and Legion Road.

Please see more information in the BF Area 53 Lake Shore-Mimico Creek Flood Mitigation Study Presentation, including the sewer improvement location map.