Toronto and Region Conservation Authority (TRCA), in partnership with the City of Toronto, is undertaking maintenance works on existing shoreline erosion control structures along Lake Ontario within Humber Bay Park West.
This work will protect against the hazards of shoreline erosion and address public safety concerns.
STAY INFORMED
Drop-In Information Session
TRCA hosted a drop-in session on February 12, 2025 to share information and answer questions about the upcoming shoreline maintenance work.
If you have any post-event questions or were unable to attend, the information panels shared at the event are available for review below. Please reach out to the project manager if you have any questions.
Learn More About the Project
Project Location
The project area is in Humber Bay Park West, south of Lake Shore Boulevard West, at the mouth of Mimico Creek in the City of Toronto.
The areas of concern includes six armourstone headlands and three rubble beaches which make up most of the park’s shoreline.

Project Background

Humber Bay Park West Park was built in the 1970s and 1980s with excavated materials and rubble surplus from construction projects. The park features a series of erosion control structures to protect the shoreline.
The shoreline erosion control structures within the project area have been monitored annually since 2006 as part of TRCA’s Erosion Risk Management Program (ERMP). All nine structures are planned for maintenance.
Severe weather events, including record high lake levels in 2017 and 2019, as well as severe winds from the April 2018 storm event, have accelerated the deteriorating condition of these structures.
Most of the structures are considered to be in failing or failed condition and require major maintenance to return them to a state of good repair.
Existing Concrete/Construction Rubble Beaches
There are three concrete/construction rubble beaches of concern. A significant amount of the original material has washed away, exposing the backshore to erosion from wind and wave activity.
At two of these beaches, the erosion scour is encroaching on park paths, posing a public safety risk.


Existing Armourstone Headlands
There are also six armourstone headlands of concern. All six structures have experienced erosion and the displacement of armourstone material to varying degrees.
For some headlands, erosion is encroaching on paths placing public safety at risk, particularly within transition areas between beaches and headlands.


TRCA retained professional coastal engineering consultant GHD to develop detailed designs for repair of the existing erosion control structures in order to address ongoing erosion and safety hazards.
Concept designs have been developed, currently moving into the detailed design phase as of November 2024.
Repair works will include maintenance to the headlands, which will the addition of armourstone and in some cases extension of the headlands to better protect the transition areas.
The extent of headland maintenance will vary based on current site conditions and wave action in that particular area.
Beach maintenance will include surcharging with medium to coarse pebble material to maintain a balance between shoreline resiliency and recreational function.
Scope of Work
Public Notices and Events
Drop-In Information Session
Wednesday, February 12, 2025
VIEW THE INFORMATION SESSION PANELS.
Progress Updates
This section will be updated as more planning and construction details become available.
Frequently Asked Questions
When will construction begin?
The schedule is subject to change. However, implementation is tentatively scheduled to begin between late 2025 and early 2026, once Humber Bay Park East has opened.
How many trucks will use the access route?
Up to eight trucks per day are expected between 7:00 a.m. and 4:00 p.m., Monday to Friday (excluding holidays).
How is this work being funded?
This project is funded by the City of Toronto and also received federal grant funding from Infrastructure Canada’s Disaster Mitigation Adaptation fund.
How is the shoreline maintenance strategy determined?
Coastal engineers assess the lake conditions to understand what type of wave action and water levels the park will experience to determine what types of materials and structures will be strong enough to protect the park from damage. This is considered along with park features and usage to design the shoreline maintenance solution.
Why are so many TRCA waterfront projects happening at once?
TRCA was a successful proponent of Infrastructure Canada’s Disaster Mitigation and Adaptation Fund, which supplements municipal funding up to 40% to support these shoreline protection projects.
While this funding helps to strengthen the Toronto shoreline at a reduced municipal cost, the projects receiving the funding need to be implemented within a particular timeframe.
Although this does mean more work occurring at the same time, it also means that more of the shoreline can be updated to protect against increased erosion due to climate change.
Are you planning to close this park while others are closed?
TRCA does not plan to commence construction in Humber Bay Park West until a large portion of Humber Bay Park East is open for public use.
Additionally, construction in Humber Bay Park West will be completed in five phases, with only one phase closed at a time. This will allow for the majority of Humber Bay Park West to be open to the public during construction.
Contact Us
For more information regarding this project, please contact:
Danielle Dellandrea, Senior Project Manager
Erosion Risk Management
Restoration & Infrastructure Division
danielle.dellandrea@trca.ca
(416) 786-5064