About 800 homes in the Mauricie region near Trois-Rivières are still without electricity, as well.
As much as 60 millimetres of rain fell over a short period overnight, causing the Lorette River in Quebec City's western suburb of Ancienne-Lorette to overflow and flood dozens of basements.
Fire operations chief Simon Bolduc said the fire department received a record number of calls for help from Ancienne-Lorette residents last night — 420 in total.
Bolduc said firefighters evacuated some 51 homes last night with the help of the nautical rescue squad, rescuing 68 people in all.
The water in Ancienne-Lorette has receded since last night, but the headaches aren't over for people living near the Nelson River in the city's north end, where firefighters are on the scene evacuating flooded homes.
More rain is expected across southern Quebec this weekend.