A Method to Analyze Stormwater Controls and Meet MECP Criteria for New Development

Presentation Overview:

The Ministry of Environment, Conservation, and Parks (MECP) will be issuing updated stormwater management criteria for the following:

  • Water balance
  • Water quality
  • Erosion control
  • Water quantity
  • Flood control

This presentation will provide a case study of a municipality undergoing a Comprehensive Stormwater Management Master Plan (CSWM-MP). The case study will isolate one study area of the municipality that is intended for future development.  A Visual OTTHYMO 6.0 hydrologic model will be presented to analyze the existing and future conditions of the study area. The model development and results will be showcased throughout the presentation.  Management of the MECP criteria will be achieved by providing stormwater controls for targets established in the post-development conditions model (i.e. Low Impact Development, retrofit opportunities, etc.).

Learning Objectives:

  • How to incorporate the new draft MECP guidelines into stormwater management projects
  • How to develop the hydrologic model
  • How to interpret targets related to water balance, water quality, erosion control, water quantity, and flood control


Edward Graham, Civica Infrastructure


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If you have any additional questions, please contact Victoria Kring at Victoria.Kring@trca.ca

TRCA HST Registration number is 10808 8584 RT001