From the mouth of the Trompeuse river, the current successively follows the course of the rivière aux Écorces on generally towards the north, the course of the Pikauba River on generally to the north, crosses Kenogami Lake on north-east to barrage de Portage-des-Roches, then follows the course of the Chicoutimi River on towards the east, then the northeast and the course of the Saguenay river on towards the east until Tadoussac where it merges with the Saint Lawrence estuary .