Stormwater Management Ponds

About stormwater management ponds

​After rain or snowfall, the water left behind on roads, sidewalks, grass and pathways is called “stormwater.” This is ordinarily absorbed into the ground by plants and soil. However, pavement and other hard surfaces — such as driveways, sidewalks and roofs (especially in urban areas) — can interfere with this absorption. This can lead to water pooling or even flooding.


To help take care of this, stormwater management ponds exist throughout the city. They are human-made areas created to gather and retain rainfall and surface water runoff. These ponds are usually found in neighbourhoods where stormwater can easily be collected. The City of Vaughan manages more than 150 stormwater management ponds.


Stormwater management ponds can be either wet or dry and they are designed to maintain a permanent body of water within the pond area. A dry pond is designed to remain dry until a rain event occurs which may temporarily retain stormwater within the pond area. A wet pond holds water all the time and is designed to collect and store runoff from rain and melted snow. These wet ponds collect sediment so only clean water is released back into rivers and creeks.



How stormwater ponds work


Stormwater ponds have at least one inlet 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 that pollutantsStormwater management pond surrounded by greenery in the summer attach themselves to settle to the bottom of the pond. The pond's outlet releases water from the pond into a nearby creek system at a controlled rate. This process helps make the water cleaner when it leaves the pond and back into lakes and rivers. Without stormwater ponds, large amounts of water would enter a stream all at once, causing flooding and eroding soil from the stream banks. Everything that enters a street’s catch basin will eventually end up in a stormwater management pond before making its way back into local creeks, rivers and lakes. This water is not treated before entering the water cycle again; therefore, everyone must do their part to keep it clean.


Benefits of stormwater ponds

  • Reduces flooding
  • Protects the natural environment from contaminants and erosion
  • Protects rivers and lakes by trapping pollutants such as oil, pesticides, bacteria and trash
  • Establishes a human-made habitat for wildlife
  • Encourages a naturalized space for walking and bird watching


Staying safe in the winter

Frozen stormwater pond with snow on top
Animated graphic describing why it's not safe to skate on a stormwater pond. Person skating has an x through the picture.


Stormwater management ponds may look safe to walk and skate on, but they are extremely dangerous due to water constantly flowing in and out of the pond underneath. These ever-changing water levels make the thickness of the ice highly unpredictable. This is a serious safety hazard and one of many reasons to stay off the ice.


Looking for a safe place to skate in Vaughan? Check out one of the City’s outdoor skate rinks. For complete information on safety guidelines, visit


In the summer

Swimming, boating and fishing are not safe in stormwater management ponds due to the constant flow of water in and out of the pond, multiple pollutants and unpredictable water levels. The bottom of stormwater management ponds is very soft and anyone, including pets, who enter may quickly become stuck.

Looking for a safe place to swim and play? Visit or for a full list of locations.


The following activities are not permitted on the City’s stormwater pond property:

  • Planting gardens or cutting grass on pond property
  • Storing yard materials on pond property
  • Installing gates to access pond property from fenced yards
  • Disposing of grass clippings, yard waste or garbage on pond property or into the pond
  • Disturbing plants and vegetation around the pond
  • Disposing of pet fish in the pond
  • Disposing of swimming pool water and chemicals on pond property or in the pond


Maintenance of stormwater ponds

Each of these ponds need to be properly maintained to control the flow of water. Year-round, routine maintenance includes removal of debris in and around the pond, removal of invasive vegetation; maintenance of structures such as inlets and outlets, and maintenance of surrounding vegetation and plants. Through the City's Stormwater Management Facility Improvements Program, enhancements are currently being undertaken to ensure the ponds function at their optimal levels for the public, wildlife and the environment.


Reporting an issue

Notice a stormwater pond that requires attention? Report issues, including any odours, beaver activity (damming) or high water levels Service Vaughan.


Individuals found dumping their household garbage are subject to a maximum fine of $5,000 per offence. If you witness illegal dumping or littering at a stormwater pond, please report it to Access Vaughan at 905-832-2281 or You may also report illegal dumping through Service Vaughan.