St-Pierre

The St. Pierre River is considered the most important of Montreal’s lost rivers because of its size and course. It originates at the top of the mountain in what is now Côte-des-Neiges, continues its flow westwards through today’s Nôtre-Dame-de-Grace, makes a sudden turn to the east at Côte-Saint-Luc, collects at the bottom of the Saint-Jacques cliff, winds its way through Saint Henri, and eventually turns south to rejoin the Saint Laurent River at L’île des Soeurs. For as long as time, this winding waterway acted as a drainage route to the entire western side of Montreal’s Mountain.

L-R: St-Pierre flood, map of South-West Montreal highlighting St-Pierre, St-Pierre turned into sewer 2011

L-R: St-Pierre flood, map of South-West Montreal highlighting St-Pierre, St-Pierre turned into sewer 2011