Moore Park Ravine between 193 – 195 Hudson Drive Slope Stabilization Project

Toronto and Region Conservation Authority (TRCA), in partnership with the City of Toronto, is undertaking slope stabilization works behind 193 and 195 Hudson Drive to protect at-risk essential structures located adjacent to and within Moore Park Ravine.

Project Location

The project is generally located southeast of Eglington Avenue East and Yonge Street in the City of Toronto. Mud Creek is located within the valley at the toe of slope behind Hudson Drive. The site is in close proximity to the Beltline Trail entrance at Moore Avenue where improvements to the pedestrian trail are underway. Slope stabilization works behind Hudson Drive will be planned in a manner that will not cause additional disturbance to the trail improvements which are underway.

Moore Park Ravine between 193 – 195 Hudson Drive Slope Stabilization Project

Learn More About the Project

Project Background

Concerns regarding valley slope erosion behind Hudson Drive were first identified to TRCA in 2008. In the spring of 2008, a slope failure occurred along a City of Toronto parkette located between 199 and 215 Hudson Drive. Accelerated erosion and gullying were subsequently observed at this site following the July 8, 2013 severe weather event. This storm resulted in additional slumping behind Hudson Drive, as well as damage to private residential properties at the top of the slope.

TRCA retained Terraprobe Inc. (Terraprobe) in 2008 to complete a slope stability and erosion risk assessment and prepare a report containing three (3) stabilization alternatives which included a “Do Nothing” alternative, minor slope improvements, and major earthworks. The site was re-assessed by Terraprobe in 2009 following further movement along the slope. Following an update to the original site investigation, Terraprobe’s recommendations remained unchanged from the 2008 report. TRCA undertook various other investigations to determine the extent of risk to essential infrastructure in this area over the long term. Based on the results of these investigations, it was determined that private residential dwellings were at risk from slope instability should no remedial works be undertaken.

In order to address this risk, TRCA initiated the Moore Park Ravine between 193 – 195 Hudson Drive Slope Stabilization Project (the “Project”) to provide long-term, low maintenance protection to at risk essential structures along the valley slope within the project limits.

Slope Failure behind 193 and 195 Hudson Drive. Source: TRCA 2020.
2020 Soil Sampling behind 193 and 195 Hudson Drive. Source: TRCA, 2020.

Scope of Work

The objective of this project is to protect private properties on Hudson Drive from valley slope instability within the Moore Park Ravine. Through 2021, TRCA intends to:

  1. Issue a Request for Pre-Qualification (RFPQ) and Request for Proposal (RFP) for design-build services
  2. Secure all necessary permits and approvals for construction
  3. Construction through 2021 – 2022

This site has several logistical considerations which include limited construction access from the top of slope, and minimizing impacts to mature trees and vegetation considering the environmental sensitivity of Moore Park ravine. TRCA will prioritize approaches which minimize disturbance to the ravine and which will accommodate terrestrial habitat improvements during the restoration phase of work.

Construction Information

TRCA is currently in the planning stages for the Project. Construction is tentatively planned to take place through 2021 – 2022, pending receipt of all necessary permits and approvals, and to the limit of available annual funding. Construction information will be posted following the completion of all planning activities.

Public Notices

Notice of Construction signs will be placed at applicable locations along Moore Park Ravine trail routes and on Hudson Drive. Notice of Construction letters will be circulated to members of the local community prior to construction.

Progress Updates

March 2021

TRCA is working towards issuing the RFPQ for design-build services.

Contact Us

For more information regarding this project, please contact:

Courtney Rennie, Senior Project Manager
Erosion Risk Management
Restoration & Infrastructure Division
101 Exchange Avenue, Vaughan L4H 0A3
Email: courtney.rennie@trca.ca
Phone: 416-661-6600 ext. 5523