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Storm Sewer System Infrastructure Needs Study


Port Colborne, Ontario


Environmental Assessment


The City of Port Colborne has approximately 96 kilometers of storm sewers plus multiple networks of ditches and swales.

The City’s previous storm sewer master plan was completed in 1978; thus the City was in need of an up-to-date assessment of storm sewer servicing needs, and a sustainable means of financing the required capital investments and maintenance works.

The study objectives included the following:

  • Undertake a comprehensive analysis of the City’s existing storm sewer network to identify existing and potential future deficiencies in the collection of storm water runoff;
  • Address applicable storm water discharge quality regulations;
  • Define and prioritize maintenance works and capital upgrades that are required to service existing and future land use for the next 25 years; and
  • Develop a sustainable financing strategy to support the recommended capital and maintenance program.

This project required a Municipal Class Environmental Assessment (EA) Phase I and Phase II to be completed. To undertake the analysis, a hydraulic model was developed using InfoSWMM, to represent the current and future storm sewer system.

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