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Opinion

Why it’s already too late for Toronto to plan for the next flood

The cheapest time to build large-scale, much-needed infrastructure is always in the past.

Updated
3 min read
Don Valley flooding.JPG

Cars are partially submerged in flood waters in the Don Valley following heavy rain in July. Big infrastructure projects designed to mitigate flooding in the city will take decades to complete.


By now, the endlessness of the construction of the Eglinton Crosstown LRT is so well known as to be a punchline (or maybe an adage — “when the Crosstown opens” being a synonym for the imagined time when flying pigs soar over a frozen-over hell). But many Star readers might have been surprised to learn this weekend that Toronto has another massive infrastructure project that has been in the works longer — and is projected to come into service much later — than that transit line. 

As part of the Wet Weather Flow Master Plan first approved by city council in 2003, Toronto is constructing 22 kilometres of stormwater tunnels to prevent overflows during rainstorms. I’ve been hearing about it almost as long as I’ve been covering city politics. Originally, the concern wasn’t much about preventing the kind of flooding that’s become seminormal in Toronto, but to keep untreated sewage from flooding into the lake from our combined sewer system. Front-of-mind concerns have changed, but the project remains: construction began in 2012, and will likely continue for another decade, as my colleague Mahdis Habibinia reported on the weekend. 

Edward Keenan

Edward Keenan is a Toronto-based city columnist for the Star. Reach him via email: ekeenan@thestar.ca

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