Community NewsMississauga

Critical Role of Mississauga’s Stormwater Infrastructure During 100-Year Storm

Mississauga ON – Last week, Mississauga faced a ‘100-year storm,’ receiving approximately 106 mm of rainfall in just a few hours—significantly more than the typical 75 mm average for the entire month of July. This deluge led to high water levels and localized flooding across the city, particularly affecting roads, creeks, rivers, and streams.

Despite some parks flooding, trails washing out, embankments eroding, and residents experiencing property damage, the situation could have been far worse. The city’s stormwater infrastructure played a pivotal role in managing the excessive rainwater, preventing more extensive damage. This system includes a network of underground pipes, stormwater ponds, culverts, and overland flow routes designed to channel and control water flow.

The City’s Stormwater System

Separate from the sanitary wastewater system, Mississauga’s stormwater system collects and channels rainwater and melted snow from properties to receiving water bodies like Lake Ontario. This infrastructure mitigates flooding risk, reduces creek erosion, and protects water quality, benefiting residents, wildlife, and the environment.

The city’s stormwater charge funds essential projects, such as the construction of Lake Saigon, a stormwater management pond at Matheson Blvd E. and Hurontario Street. This project was crucial in protecting flood-prone areas within the Cooksville Creek watershed, demonstrating the importance of continued investment in stormwater infrastructure.

Addressing Climate Change and Future Challenges

As climate change progresses, Mississauga is expected to experience more frequent and intense storms. The city’s recently approved Stormwater Master Plan, “Build Beautiful,” aims to enhance the stormwater system to handle future challenges, including increased rainfall, flooding, and pollution control.

The city’s stormwater drainage system includes over 1,900 kilometers of storm sewer pipes, 51,000 catchbasins, 270 kilometers of ditches, 150 kilometers of creeks, and 81 stormwater management facilities. These components work together to manage and treat stormwater before it reaches Lake Ontario, the city’s primary drinking water source.

Funding and Future Needs

The self-funded stormwater charge supports the city’s stormwater program, covering the costs of operations, maintenance, and necessary improvements. However, the city emphasizes the need for additional funding from all government levels to ensure the long-term sustainability and enhancement of this vital infrastructure.

Ongoing Cleanup and Restoration

In the aftermath of the storm, the city is actively engaged in cleanup efforts, including removing debris from sidewalks, roads, and trails. Some parks and sports fields remain closed as repair work continues. The city’s proactive management of its stormwater infrastructure helped prevent a more severe disaster, highlighting the system’s critical role in safeguarding the community against extreme weather events.

Kelly Deschamps

Kelly Deschamps is an Entertainment Writer at GTA Today, covering the latest in music, film, TV, and festivals. With a passion for the entertainment industry, Kelly brings readers insightful and engaging stories from the heart of the cultural scene. For inquiries or feedback, contact Kelly at kelly.deschamps@gtaweekly.ca.

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