Environmental Assessment

Lower Don River West Remedial Flood Protection Project 

Class Environmental Assessment

Class EA for the Lower Don River West Remedial Flood Protection Project – Notice of Project Approval (October 6th 2005)

Toronto and Region Conservation Authority (TRCA) completed the planning and design process approved under the Environmental Assessment Act in Conservation Ontario’s Class Environmental Assessment for Remedial Flood and Erosion Control Projects for undertaking a remedial project regarding the removal of risk due to flooding of 210 hectares of land located west of the Don River near Lake Ontario in the City of Toronto.

Digital copies of the approved Class EA can be found below:


  • Appendix A Public Consultation Details
  • Appendix B Mississaugas of New Credit
  • Appendix C Correspondence with Stakeholder
  • Appendix D Hydraulic Modelling Details
  • Appendix E Aquatics Report
  • Appendix F Terrestrial Natural Heritage Report
  • Appendix G Cultural Heritage Report
  • Appendix H Geo Environmental Study
  • Appendix I Rail Transportation Study
  • Appendix J Terrapex & Terraprobe Reports
  • Appendix K East Bank Flood Protection Alternatives

If you wish to view any of the appendices please contact Ken Dion at kdion@trca.on.ca

Planning Mechanism for the Undertaking

The Conservation Authority Class EA

The Conservation Ontario Class Environmental Assessment for Remedial Flood and Erosion Control Projects was used to conduct this study. This process is for projects undertaken by a Conservation Authority that will protect human life and property in previously developed areas from an impending flood or erosion control problem. This Class EA process outlines the steps required to devise and select the best remedial flood control measures for a project through a detailed technical and public evaluation of alternatives, and to identify the best means to mitigate any residual adverse environmental effects resulting from the project.

The CEAA Environmental Screening Report

Under the triggers of the Canadian Environmental Assessment Act, it was determined that the Lower River West Remedial Flood Protection Project did not require a CEAA Environmental Screening.

Agency and Public Consultation

The Conservation Authority Class EA process guarantees numerous opportunities for public and stakeholder participation throughout the planning stages of a project. Consultation was coordinated by the TRCA with the aid of the Public Consultation and Community Outreach Section, City of Toronto, Works and Emergency Services Department. A summary of the various consultation venues for this project is below.

  • A Technical Advisory Committee comprised of stakeholders, technical representatives of all pertinent regulating agencies, and key community leaders;
  • A Community Liaison Committee, representing a broad spectrum of public interests provided representatives of the local community with the opportunity to participate in the planning stages of the project;
  • Several public events provided opportunities for input and feedback from the general community; and
  • Regular newsletter and website project updates were issued.

Community Liaison Committee

A Community Liaison Committee was established for the Lower Don River West Remedial Flood Protection Project. This Committee consisted of representatives of the local community and will assist the TRCA throughout the Environmental planning process, including the provision of assistance at public workshops and events.

The Community Liaison Committee included representatives from the following groups:

  • Citizens for the Old Town
  • Cityscape
  • Corktown Residents & Business Association
  • Don Watershed Regeneration Council
  • Food Share
  • Gooderham & Worts Neighbourhood Association
  • Mississaugas of the New Credit First Nation
  • Port Lands Partnership
  • Queen-Broadview BIA
  • South East Downtown Economic Redevelopment Initiative (SEDERI)
  • South Riverdale Revitalization Project
  • St. Lawrence Neighbourhood Association
  • Taddle Creek Watershed Initiative
  • Task Force to Bring Back the Don
  • Toronto Cycling Committee
  • West Don Lands Committee

In addition, the Toronto City Councillor, MP and MPP for each of the following wards or ridings participated in the CLC process:

  • Councillor, Ward 28
  • Councillor, Ward 30
  • MPP, Broadview-Greenwood
  • MPP, Toronto Centre-Rosedale
  • MP, Broadview-Greenwood
  • MP, Toronto Centre-Rosedale