Finally, it flows into the Jacques-Cartier River, bypassing the Île à Prévost located at the mouth, opposite the village of Sainte-Catherine-de-la-Jacques-Cartier.

This toponym is indicated in legend on the map designed in 1632 by Samuel de Champlain; however, he erroneously indicates the source of the Saint-Charles River.

In his work "Histoire du Canada" published in 1636, Recollect brother Gabriel Sagard writes: "They go hunting (the season being good) towards Lake Sainct Joseph, where they made a profit at the expense of the caribouts, explores e other bestes which are in abundance.

[2] The toponym "Lac Saint-Joseph" appears in 1656 on the map of Nicolas Sanson d'Abbeville under the script "L. St Joseph".

At that time, about thirty Irish families who arrived in 1817 from Connecticut, occupied the current area southeast of the lake, designated Fossambault-sur-le-Lac.

The toponym "Lac Saint-Joseph" was formalized on December 5, 1968, at the Place Names Bank of the Commission de toponymie du Québec.