[2] The river has its source in Lac-aux-Sables, located northwest of the main village in the area campgrounds.

On its way downward, the river passes near Petit Lac Noir (Little Black Lake).

After running for 2.8 km, the Propre River flows into the southeastern part of Huron Lake, located in the town of Lac-aux-Sables between the main village and Hervey-Jonction.

The river resumes flowing south from the southwestern point of Huron Lake.

[2] Once at the top of this fall, a dam was built to operate a saw mill owned by Mr.