The rivière aux Écorces du Milieu is a tributary of the rivière aux Écorces, flowing in the unorganized territories of Lac-Jacques-Cartier, the La Côte-de-Beaupré Regional County Municipality, in the administrative region of Capitale-Nationale, in the province from Quebec, to Canada.

The course of the Rivière aux Écorces du Milieu crosses the western part of the Laurentides Wildlife Reserve.

This valley is also served by some secondary forest roads, especially for forestry and recreational tourism activities.

The surface of the Rivière aux Écorces du Milieu is usually frozen from the beginning of December to the end of March, however safe circulation on the ice is generally done from mid-December to mid-March.

The main watersheds neighboring the Rivière aux Écorces du Milieu are: The rivière aux Écorces du Milieu rises at Lake Chavigny (length: 2.5 kilometres (1.6 mi); altitude: 824 metres (2,703 ft)) in a forest area in the Laurentides Wildlife Reserve.