| Ruisseau Saint-Joseph | |
| Pushpin Map: | Quebec |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Estrie |
| Subdivision Type4: | MRC |
| Subdivision Name4: | Le Granit Regional County Municipality |
| Source1: | Mountain streams |
| Mouth: | Lake Mégantic, Chaudière River |
| Mouth Location: | Saint-Augustin-de-Woburn |
| Progression: | Lake Mégantic, Chaudière River, St. Lawrence River |
| River System: | St. Lawrence River |
| Basin Size: | NaNkm (-2,147,483,648miles) |
| Tributaries Left: | (upstream) |
| Tributaries Right: | (upstream) |
The ruisseau Saint-Joseph (in English: Saint-Joseph stream) is a tributary on the south shore of Lake Mégantic which flows into the Chaudière River; the latter flows northward to empty on the south shore of the St. Lawrence River. The stream flows in the municipality of Saint-Augustin-de-Woburn, in the Le Granit Regional County Municipality, in the administrative region of Estrie, in Quebec, in Canada.[1]
The toponym Ruisseau Saint-Joseph was made official on October 19, 1971, at the Commission de toponymie du Québec.[2]