From the confluence of the Gilbert river with the Cyriac river, the current descends the latter on to the north, then the current crosses Lake Kénogami on northeasterly to barrage de Portage-des-Roches, then follows the course of the Chicoutimi river on eastward, then northeasterly and course of the Saguenay river on eastward to Tadoussac where it merges with the Saint Lawrence estuary.