Stormwater in Mississauga

Youth Rain Action Storyboard

Post 11: Stormwater in Mississauga

By: Fatima Raza

This week the City of Mississauga came to tell us about stormwater management in the Mississauga area. Recently, City Council wanted to come up with an economical way to fulfil the stormwater needs of the city. Stormwater is simply rainwater and snow melt that lands in our city. The stormwater enters our watershed through infrastructure built by the city. Here at Sheridan Nurseries, we are in the Etobicoke Creek watershed.

One current method of stormwater management is retention ponds. There are about 60 of them across Mississauga.  After a rain fall the water is stored in the retention ponds and slowly released into local rivers. This prevents a sudden increase in water into the rivers and reduces flooding. The area around the ponds are also planted to be naturalized, providing habitat.

Mississauga is looking into efficient ways to replace outdated infrastructure to create nice/healthy environment. They also educate residents on low impact solutions. These low-impact solutions are often referred to as LID features or Low Impact Design. Some examples of LID features include:

  • Underground detention facilities, which increases infiltration y allowing water to slowly soak into the ground
  • Permeable pavement, which is pavement with pores to allow water movement into the ground below.
  • Green roofs, which are good for large roofs and use stormwater directly where it lands
  • Bioswales, which is a combination of planted material to soak up water and a swale to direct water into storm sewers
  • Community gardens, which add value to our neighbourhoods and use stormwater on-site
  • Rainwater harvesting, where stormwater is collected from downspouts in tanks and used for non-drinking purposes such as urinals, geothermal, solar energy, and melting snow
  • Rain gardens, which are special gardens designed to use and retain stormwater run-off from non-permeable surfaces like driveways

By using LID features, Mississauga will be able to better manage their storm water and keep our water clean. It is important to remember that stormwater is connected directly to our natural water system and that whatever you dump down stormwater sewers goes directly into our rivers, and eventually Lake Ontario.


Visit the Youth Rain Action project page to learn more or contact Emily Dutton at

The Youth Rain Action Project is led by Ecosource in partnership with Toronto and Region Conservation Authority, the Burnhamthorpe Sustainable Neighbourhood Retrofit Action Plan (SNAP), and Sheridan Nurseries, and is generously supported by the Government of Ontario’s Great Lakes Guardian Community Fund.