The place was mentioned in 1687 by the
Marquis de Denonville. His record stated that "
du Lac is a place where one stopped on the way to the ''Rapides d'en Haut
", referring to a small hillside (French: coteau
) on the north side of the St. Lawrence River near the mouth of Lake Saint Francis (French: lac Saint-François''). In mid-2013, around 120 people were temporarily evacuated, and two people died after an explosion in the local fireworks factory. In early April 2023, 3,672 people lost electric power for up to several days as the result of a massive power outage caused by an extended period of freezing rain in the region. == Demographics ==