Jack's lake has been modified by facilities designed to facilitate the log drive that is practiced each spring, notably the construction of the dam.

[1] One of the largest in the Laurentian wildlife reserve, Lac à Jack is popular for speckled trout fishing (30,000 catches per year).

However, the presence of an Amerindian named Jacques Bacon, who spent the summer camping in these areas with his family, several decades ago, could be linked to the origin of this body of water.

The construction of the Lac-à-Jack dam allowed the passage of a road that links the Jacques-Cartier lake sector to the Grands-Jardins conservation park.

[2] The toponym "Lac à Jack" was formalized on December 5, 1968, at the Place Names Bank of the Commission de toponymie du Québec.