The Parks Canada Impact Assessment Process

The Parks Canada impact assessment process has been developed to fulfil legal obligations under the Impact Assessment Act, as well as other legal and mandated obligations to protect and present Canada’s natural and cultural heritage. Projects and activities with the greatest potential to result in adverse impacts to important natural or cultural resources are assigned to an in-depth, but focused level of analysis through the Detailed Impact Assessment, or DIA, impact assessment pathway. DIAs support decision-making by providing appropriate and rigorous analysis based on sound science, Indigenous knowledge, and Parks Canada policy.

Every DIA involves the following elements:

  • early integration into the project planning process;
  • the careful identification and selection of valued components (VCs);
  • the application of evidence based decision-making;
  • an appropriate level of public engagement; and
  • Indigenous engagement and/or Indigenous consultation.


These elements provide the focus, rigour and inclusiveness necessary for the assessment of complex proposals, in a manner appropriate to the potential for adverse environmental impacts.

The public engagement process for the DIA is currently under development. At a minimum, notification of the DIA will be posted on the Canadian Impact Assessment Registry and the draft DIA will be made available for public comment.


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