The Valin River flows south, on the north shore of the St. Lawrence River, in the municipalities of L'Ange-Gardien and Château-Richer, in the La Côte-de-Beaupré Regional County Municipality in the administrative region of Capitale-Nationale, in the province of Quebec, in Canada.

The upper part has mountainous relief and is accessible only by secondary forest roads.

The water level of the river varies with the seasons and the precipitation; the spring flood occurs in March or April.

The Valin River begins at the confluence of two streams in the mountains behind the Côte-de-Beaupré, in L'Ange-Gardien .

The toponym "Rivière Valin" was formalized on August 31, 1971, at the Place Names Bank of the Commission de toponymie du Québec.