Ontario Construction News staff writer
The City of Mississauga is speeding up work on stormwater infrastructure upgrades after two record-breaking storms dropped nearly 280 millimetres of rain last summer, overwhelming drainage systems and flooding neighbourhoods.
In the wake of the storms — both considered 100-year events — city council approved an action plan aimed at strengthening flood protection and improving the ability of the stormwater system to handle the increasing frequency and severity of rainfall caused by climate change.
City staff presented an update on the plan to the Stormwater Advisory Committee in June. Work includes three main priorities: accelerating capital projects and maintenance, hiring more staff to monitor and maintain stormwater infrastructure, and launching financial relief programs for residents affected by flooding.
Upgrades are part of Mississauga’s broader strategy to reduce the impacts of extreme weather and build safer, more climate-resilient communities.
Several key projects are already underway. Work includes land acquisition for the Dixie-Dundas Flood Mitigation Project, storm sewer upgrades in Historic Malton Village, and inlet upgrades near Greenpark Crescent.
Completed projects include the installation of a 1.2-metre temporary floodwall along Little Etobicoke Creek, a storm outfall inline check valve along Cooksville Creek, and a trunk sewer inlet upgrade near Tonolli Drive, north of the Queensway.
To support the increased pace of work, the city has hired additional staff to inspect stormwater inlets and outlets and respond more quickly to emerging maintenance needs. A digital dashboard was also introduced to track assessment status and maintenance actions in real time.
As a result, more than 1,300 stormwater inlets and outlets have been added to the city’s inspection schedule. Another 21 locations have been designated as priority sites, bringing the total to 70.
The city is also using inspection robots equipped with closed-circuit television cameras to examine pipes for damage or blockages, allowing targeted maintenance without the need for excavation.
Officials say the measures support the city’s Strategic Plan and climate priorities by protecting public infrastructure, reducing risk to private property and helping residents adapt to a changing climate.
Details on financial relief programs for affected residents are expected to be released in the coming months.
