Why do some parts of Montreal flood so often when it rains?

When the forecast calls for torrential rain, some Montreal residents hold their breath.

This is Montreal host Ainslie MacLellan visits one street in the Saint-Laurent borough where homes have flooded multiple times in recent years by sewer back up during heavy rain. 

She finds out how climate change, infrastructure choices and our transformation of the natural landscape created the perfect storm.

LISTEN | Why do some parts of Montreal flood so often when it rains?

This is Montreal26:12Why do some parts of Montreal flood so often when it rains?

When the forecast calls for torrential rain, some Montreal residents hold their breath. Ainslie MacLellan visits one street in Saint-Laurent where homes have flooded multiple times in recent years by sewer back up during heavy rain, and finds out how climate change, infrastructure choices and our transformation of the natural landscape have created the perfect storm.

Do you have a question about Montreal? Host Ainslie MacLellan is determined to help find the answer. Whether it's a story that's disappeared from the headlines, a curious landmark in your neighbourhood, or a quirk of Montreal life you've been wondering about, we're on it. Let's learn about this place together.

Your Montreal questions, answered weekly. Nothing too big, too small or too weird. What are you wondering? Send us your question here. 

Tune in to This is Montreal every Thursday on CBC Listen or wherever you get your podcasts.