The Rivière Simoncouche is a tributary of Kenogami Lake, flowing the unorganized territory of Lac-Ministuk (MRC Le Fjord-du-Saguenay Regional County Municipality) and in the territory of the city of Saguenay (sector Kénogami), in the administrative region of Saguenay–Lac-Saint-Jean, in the province from Quebec, to Canada.