Some 185-km long, the Chaudière River begins its course in Lake Mégantic, in the Estrie area, in south-eastern Quebec, and flows to the north to meet St. Lawrence River in Lévis, on Quebec City's south shore. It is one of Quebec's longest watercourse.
Source: https://fr.wikipedia.org/wiki/Rivière_Chaudière#Histoire et Ville Saint-Joseph-de-Beauce