From its head, the "Rivière aux Bluets" flows on 7.7 kilometres (4.8 mi) towards the north-west, up to the municipal limit between Saint-Hilaire-de-Dorset and Courcelles-Saint-Évariste; on 7.7 kilometres (4.8 mi) north-west, to the bridge in the village of Courcelles-Saint-Évariste near the Moulin Bernier; on 0.5 kilometres (0.31 mi) towards the southwest to the confluence with the rivière aux Bluets Sud located to the south of the village.
The river continues its course on 3.2 kilometres (2.0 mi) towards the northwest, winding up to route 108; on 8.4 kilometres (5.2 mi) towards the north-west winding up to the "Terre Noire brook" (coming from the north-east); on 2.9 kilometres (1.8 mi) to the north; on 5.4 kilometres (3.4 mi) towards the west until its mouth.[1]
The mouth of the "rivière aux Bluets" empties at the end of a bay which constitutes an extension of the northeast shore of Grand lac Saint François.[2]