| Rivière aux Cèdres | |
| Pushpin Map: | Quebec |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Chaudière-Appalaches |
| Subdivision Type4: | MRC |
| Subdivision Name4: | Lotbinière Regional County Municipality |
| Source1: | Agricultural and forest streams |
| Mouth: | Henri River |
| Mouth Location: | Val-Alain |
| River System: | St. Lawrence River |
| Tributaries Left: | (upstream) ruisseau Bilodeau-Turgeon, Branche de Droite |
| Tributaries Right: | (upstream) |
The rivière aux Cèdres (in English: Cedar River) is a tributary of the east bank of the Henri River whose current flows successively into the rivière du Chêne and on the south shore of the St. Lawrence River.
The Cedars River flows through the municipalities of Saint-Agapit, Saint-Flavien, Dosquet, Saint-Janvier-de-Joly and Val-Alain, in the MRC of Lotbinière Regional County Municipality, in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.
The main neighboring watersheds of the Cèdres river are:
The Rivière aux Cèdres has its source in a marsh area straddling the intermunicipal boundaries of Saint-Agapit, Dosquet and Saint-Flavien. This head area is located southwest of the center of the village of Saint-Agapit, at west of the village center of Saint-Flavien and at northeast of the center of the village of Dosquet.
From its head area, the Rivière aux Cèdres flows over with a drop of, divided into the following segments:
The Rivière aux Cèdres flows into a bend in the river on the east bank of the Henri River in the municipality of Val-Alain. This confluence is located downstream from the confluence of the rivière aux Frênes and upstream from the confluence of the Henri River.
The toponym Rivière aux Cèdres was formalized on December 5, 1968, at the Commission de toponymie du Québec.[2]