The rivière Felton is a tributary of Grand lac Saint François which constitutes the head lake of the Saint-François River.

This confluence is located at 2.0 kilometres (1.2 mi) northwest of the boundary between the municipalities of Nantes and Saint-Romain.

In addition, this river constitutes the eastern limit of Parc national de Frontenac.

The Felton River flows onto the south shore of Baie Sauvage which is an extension of Grand lac Saint François.

The toponym "Rivière Felton" was officially registered on December 5, 1968, at the Commission de toponymie du Québec.