| Rivière de la Fourche | |
| 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: | Bellechasse Regional County Municipality |
| Source1: | Confluence of the rivière des Mornes, Milieu stream and Beaudoin stream |
| Source1 Location: | Saint-Philémon |
| Mouth: | Rivière du Sud (Montmagny) |
| Mouth Location: | Armagh |
| Progression: | Rivière du Sud (Montmagny), St. Lawrence River |
| Tributaries Left: | (upstream) ruisseau Chabot, ruisseau Théberge, ruisseau du Sud, rivière des Orignaux. |
| Tributaries Right: | (upstream) cours d'eau Goulet, cours d'eau du rang Taché Ouest, ruisseau de la Grillade. |
The rivière de la Fourche (in English: river of the Fork) crosses the municipality of Saint-Philémon (MRC Les Etchemins Regional County Municipality), as well as Notre-Dame-Auxiliatrice-de-Buckland and Armagh, in the Bellechasse Regional County Municipality, in the administrative region of Chaudière-Appalaches, in Quebec, in Canada .
The Fourche River is a tributary of the south shore of the rivière du Sud (Montmagny) which flows north-west, then north-east to the south shore of the St. Lawrence River.[1]
The Fourche river takes its name from the fact that the three head waterways (rivière des Orignaux, brook of Milieu and brook Beaudoin) converge together, forming a fork on the maps geographical areas, the handle of which points to the north-west.[1]
The toponym “rivière de la Fourche” was made official on September 11, 1987, at the Commission de toponymie du Québec.[2]