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The rivers under watch are located across several regions, including in Lanaudière, the Outaouais region in western Quebec, the Laurentians north of Montreal, and the Quebec City area.

Parts of the Outaouais and Laurentians have already received up to 40 mm of rain since the start of the week, according to Environment Canada meteorologist Julien Pellerin. Those areas, as well as other southern Quebec regions stretching from Gatineau to the Eastern Townships, could be getting between 15 and 25 mm more by Friday morning, he said in a phone interview.

"That rain will fall into the regions where most of the problematic rivers are," he said. He noted that temperatures could rise to 20 C on Saturday, in southern Quebec, speeding up snowmelt and sending more water into swollen rivers.
Pellerin said most of the flooding is expected to be localized only, largely because river levels were low last fall.

The City of Montreal has activated its flood intervention plan in response to rising water levels around the island. Mayor Soraya Martinez Ferrada said there wasn't any flooding on Wednesday, but the city wants to be prepared. Crews have installed protective measures in vulnerable areas, and are ready to take further action, she added.

"Our absolute priority is the safety of Montrealers," she said in a statement.

Environment Canada is calling for rain in Montreal later on Wednesday and to continue through Friday.

Pellerin said there will be sunny weather on Saturday before the rain returns Sunday along with much cooler temperatures to start next week.

"There could even be a little snow," he said. 

This report by ¹ú²úÓÕ»ó¸£Àû was first published April 15, 2026.