The rivière à la Catin is a tributary of the Cami River, flowing in the municipality of L'Anse-Saint-Jean and Rivière-Éternité, in the Fjord-du-Saguenay, in the administrative region of Saguenay–Lac-Saint-Jean, in the province from Quebec, to Canada. The course of the Catin river crosses the zec du Lac-Brébeuf. The lac à Catin area is served by Chemin du Lac à la Catin which connects to the west with Chemin du Lac Travers and Chemin du Lac Desprez. The middle part of the Catin river valley is served by the Périgny road and the Lac de la Souris road, for forestry and recreational tourism activities. The lower part is served by Chemin du Lac Brébeuf. Some secondary forest roads serve this valley. Forestry is the main economic activity in the sector; recreational tourism, second. The surface of the Catin River is usually frozen from the beginning of December to the end of March, however the safe circulation on the ice is generally made from mid-December to mid-March.
Geography
The main watersheds adjacent to the Catin River are:
The Catin river rises at the mouth of Lac à la Catin in a deep valley. This lake is surrounded by Mont du Saumon, Mont du Colibri and Mont Pin. The mouth of this lake is located at:
south-west of the center of the hamlet "Les Trois-Monts";
north-west of the center of the hamlet "L’Épinglette-des-Lacs";
south-east of the confluence of the Catin river and the Cami River.
From its source, the course of the Catin river descends on in forest and mountainous areas, with a drop of according to the following segments: Upper course of the Cami river
to the northwest by collecting the outlet from Lac Solitaire and the outlet from Lac à Lionel, to brook Pin ;
towards the northeast crossing three zones of rapids, passing to the northwest of a mountain whose summit reaches, turning a bend of river at the end of the segment, up to the outlet of a mountain stream draining in particular the Mont de l'Ours ;
towards the northalmost always in rapids in a deep valley and forming a hook of towards the west, until the discharge of a few lakes;
to the west, forming a large curve to the south, crossing an area of marsh, then a long area of rapids, up to the discharge from the "Lac des Hauteurs";
towards the north-west crossing several zones of rapids until a stream which corresponds to a zone of marsh;
north-west to the outlet of "Lac Trouvé";
towards the north-west entirely in the area of rapids in a steep valley, to its mouth.
The Catin river flows on the south bank of the Cami River. This confluence is located at:
south of the confluence of the Cami River ;
south-east of the mouth of the Brébeuf Lake ;
south-west of the village center of Rivière-Éternité;
south-west of the confluence of the Saint-Jean River and L'Anse-Saint-Jean ;
