Everything you need to know about stormwater ponds

Vaughan is home to more than 150 stormwater ponds. Ever wonder how they work? We’re answering your top stormwater pond questions!

How do stormwater ponds work?

Stormwater ponds have at least one inlet (a small opening) that allows water to flow from the storm sewer system into the pond. Once the stormwater drains into the stormwater pond, any of the sand, dirt and other sediments swept up in the stormwater settle to the bottom of the pond. The pond's outlet (a small pipe) releases water into a nearby creek system at a controlled rate. This process helps make the water cleaner when it leaves the pond and goes back into rivers, creeks and lakes. 

Of note, this water is not treated at a treatment plant before entering the natural environment again; therefore, everyone must do their part to keep it clean by ensuring only rain goes down the stormwater drain.

What are the benefits of stormwater ponds?

Stormwater ponds have many benefits, including:

• reducing flooding on streets and in greenspaces.
• protecting the natural environment from contaminants and erosion.
• protecting rivers, creeks and lakes by trapping pollutants such as oil, pesticides, bacteria and trash.
• creating a habitat for wildlife.

What does the City do to maintain stormwater ponds?

Stormwater ponds must be properly maintained to control the water flow. Year-round, routine maintenance includes removing debris in and around the pond that may impede water flow, managing only the invasive vegetation to ensure it does not inhibit the function of the pond, and maintaining structures such as inlets and outlets. Additionally, from May to October, three rounds of litter pickup and grass cutting are completed at each pond to ensure staff have unobstructed access for operational purposes.

Can I skate on stormwater ponds?

While stormwater ponds are nice to look at, they are not designed for recreational use. Always keep a safe distance away. Water constantly flows in and out of stormwater ponds, so the water levels are always changing, making any activity in or around them unsafe. When frozen, the thickness of the ice is highly unpredictable, which also makes it dangerous to walk or skate on.

So, when you’re out and about this winter, remember to keep a safe distance from stormwater ponds.

Can stormwater ponds create odour?

These ponds are designed to collect and treat rainwater runoff, including organic matter such as leaves, grass clippings, dirt and other debris, depending on the time of year. As this matter decomposes, it releases natural gases, which can contribute to the pond's smell. This is a natural part of the pond's ecosystem.

Do stormwater ponds attract wildlife?

Stormwater ponds are designed to create a balanced ecosystem, which includes various kinds of wildlife and rodents, as they are a natural part of a pond's biodiversity. Wildlife and rodents play an important role in the ecosystem, helping control populations of other creatures and contributing to overall environmental health and stability. 

To learn more about Vaughan’s stormwater ponds, visit vaughan.ca/stormwater.

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