City of Toronto launches tunnel boring machine for stormwater tunnel and largest basement flooding prevention project
May 26, 2023
Today, the City of Toronto marked a major milestone for the Fairbank Silverthorn Storm Trunk Sewer System project, launching a tunnel boring machine that will work to construct a new storm sewer that will collect, store and move stormwater from the Fairbank-Silverthorn area to Black Creek to help reduce the risk of basement flooding. This is the City’s largest basement flooding prevention project to date.
This project is a significant investment in improving City infrastructure to meet the needs of Toronto communities both now and in the future. Once complete, this project will help mitigate basement flooding and sewer backups for more than 12,500 people living in 4,645 homes and reduce 40 million litres of annual combined sewer overflows into Black Creek and other local waterways.
The project consists of a three-kilometre storm sewer from Fairbank Memorial Park in the east to Black Creek in the west. Once complete, the new sewer will hold and store stormwater and release it gradually into Black Creek at a controlled rate. A series of smaller storm sewers, totalling 17 kilometres in length, will also be constructed and connected to local catch basins to carry rainwater to this large new storm sewer. The project also includes installing more than 320 devices to control rainwater flow in catch basins to reduce the risk of basement flooding and combined sewer overflows.
The project started in 2021 and will be completed in 2026. The total project cost is approximately $380 million and benefits from $73.2 million in funding from the Government of Canada under the Disaster Mitigation and Adaption Fund (DMAF). The remaining $307 million is funded by the City’s Basement Flooding Protection Program.
The City has a comprehensive Basement Flooding Protection Program, which is helping to reduce the risk of flooding by improving the sewer system. Projects are taking place in basement flooding study areas across the city. The City also has a Basement Flooding Protection Subsidy Program, which offers homeowners a subsidy of up to $3,400 per property to install flood protection devices.
“I am pleased to mark this important milestone in the Fairbank Silverthorn Storm Trunk Sewer System project that will help protect thousands of basements from flooding. This is particularly important as we see the increased frequency of impactful storms that can damage people’s homes and cherished belongings. This project will also help reduce combined sewer overflows from being released into local waterways.”
– Deputy Mayor Jennifer McKelvie (Scarborough-Rouge Park), Chair of the Infrastructure and Environment Committee
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