(Upstream) cours d'eau Clément-Gaudette, ruisseau Demers, ruisseau Landry, cours d'eau Dupuis, cours d'eau Gardin, cours d'eau Archambault, cours d'eau Rivard.
• right
(Upstream) ruisseau Fontaine, Duncan River, ruisseau Savoie, cours d'eau Dumoulin, ruisseau Courtemanche, cours d'eau Daigneault, ruisseau Lefebvre, ruisseau Carrier, ruisseau Normand.
4.2 kilometres (2.6 mi) towards the north, collecting the waters of the Gardin stream (coming from the west), up to the road;
4.1 kilometres (2.5 mi) northwesterly, to route 116;
4.1 kilometres (2.5 mi) towards the north-west, collecting the waters of the Normand stream (coming from the east) and the Dupuis stream (coming from the south), up to the road of iron;
4.9 kilometres (3.0 mi) towards the north-west, collecting the Normand, Dupuis, Gauthier, Landry, Lefebvre and Daigneault streams, up to the Courtemanche stream (coming from the north).
Lower course of the river (segment of 23.4 kilometres (14.5 mi))
From the mouth of Courtemanche brook, the river becomes wider (up to its mouth) and flows over:
8.9 kilometres (5.5 mi) westward, winding in segments, to the route 139 bridge, located east of the village of Acton Vale;
8.0 kilometres (5.0 mi) west, through the village of Acton Vale, to a road bridge;
2.8 kilometres (1.7 mi) northwesterly, winding in segments, to the mouth of the Duncan River;
3.7 kilometres (2.3 mi) towards the south-west, in an agricultural zone, to its mouth.[1]