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Business & Economics

Beneath a suburban park in Vaughan, Ontario, there’s a new underground stormwater facility

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With land at a premium, developers push to explore alternative storm water management systems.

A rise in serious storms in recent years , together with high land values, have developers and municipalities across the Greater Toronto Area embracing different approaches to managing flood risks.

The need for innovation to address flooding is more pressing than ever, says Andrew Binns , a professor of environmental engineering and water resources.

Underground systems can cost between $350-500 per cubic metre of storage.

Traditional ponds can be as little as $100-$300 per cubic metres.

With underground stormwater tanks, for example, it is harder to detect issues, such as clogging, since the infrastructure is out of sight.

“There’s a potential ugly side,” said Bassingthwaite.