Stormwater Management Programs and Projects
Following are some examples of the different types of projects to help manage stormwater.
The source is where the flow of the stormwater originates – such as roofs, roads and driveways – before it enters the sewer system. Control refers to the methods that reduce the flow of stormwater entering the sewer pipes — it is about keeping rain where it fall. Source control initiatives include:
- Mandatory Downspout Disconnection
- Wet Weather Flow Management Guidelines
- Toronto Green Standard
- Green Streets
- Design Guidelines for ‘Greening’ Surface Parking Lots
- Green Roof Bylaw
- Tree Planting Program
Conveyance refers to infrastructure methods that “convey” or move the stormwater, such as sewer pipes, to the point of discharge.
- The Fairbank Silverthorn Storm Trunk Sewer Project, currently in the engineering design phase, includes a new 2.5 km long, 3 m diameter storm trunk sewer tunnel and the addition of new collector storm sewers on streets with combined sewers to partially separate the sewer system.
- This project will reduce basement flooding for more than 2,500 properties and reduce combined sewer overflow to Black Creek through partial sewer separation of combined sewers in the area.
As the name indicates, this is the end of the ‘pipe journey,’ just before the stormwater enters a river or Lake Ontario.
- Two types of end-of-pipe facilities exist:
- Above ground: including stormwater ponds and constructed wetlands. Toronto Water manages, operates and maintains 85 stormwater management pond facilities across the City, including the Earl Bales Stormwater Management Pond.
- Below ground: including storage tanks and tunnels, such as Western Beaches Storage Tunnel and Eastern Beaches Beaches Detention Tanks.
Stream Restoration, Waterfront and Shoreline Management
- The City of Toronto and the Toronto and Region Conservation Authority (TRCA) are strong partners in the protection of life, water quality, property, parkland, ecological features and infrastructure from the hazards of erosion.
- The Wet Weather Flow Master Plan defines a series of stream restoration projects with a focus on correcting the major historical impacts of urbanization.
- Stream restoration projects are developed through a careful analysis of the hydrology and geology of the watershed, taking into account the impacts of past and future urban development, the implementation of stormwater runoff controls and the impacts of climate change.