The Éternité river is mainly served by the route 170 (east-west direction) which passes through the village of Rivière-Éternité.

Some other secondary forest roads serve the lake sector for forestry and recreational tourism activities.

The Commission de toponymie du Québec wrote about it: "a map of Jacques-Nicolas Bellin, from 1744, designates the river by the Amerindian name Heregachitgs, which translates as the Trinity.

A map produced in 1825 by Pascal Taché identified the river which ends at the bottom of the bay: "Rve de l'Étrinité" (sic)."

Forest sites were exploited along this river, in the current municipality of Rivière-Éternité, at the end of the XIXe century.