| Bras de Riche | |
| 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: | Montmagny Regional County Municipality |
| Source1: | Lake Bringé |
| Source1 Location: | Saint-Cyrille-de-Lessard |
| Mouth: | Bras Saint-Nicolas |
| Mouth Location: | Saint-Cyrille-de-Lessard |
| Progression: | Bras Saint-Nicolas, rivière du Sud (Montmagny), St. Lawrence River |
| Tributaries Left: | (upstream) |
| Tributaries Right: | (upstream) |
The Bras de Riche (in English: Arm of Rich) flows in the municipalities of Saint-Cyrille-de-Lessard, Saint-Aubert and L'Islet (Saint-Eugène sector), in the L'Islet Regional County Municipality, in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.
The "Bras de Riche" is a tributary of the east bank of the Bras Saint-Nicolas, which flows on the south-east bank of the rivière du Sud (Montmagny); the latter flows north-east to the south shore of the St. Lawrence River.
The main neighboring watersheds of Bras de Riche are:
The "Bras de Riche" takes its source at Lake Bringé (length: ; altitude:), located in a mountainous area, located at the limit between Saint-Cyrille-de-Lessard and Saint-Aubert. This head lake is located southeast of Trois Saumons lake and southeast of the south shore of the St. Lawrence River.
From this head lake, the "Bras de Riche" flows over, with a drop of, divided into the following segments:
The "Bras de Riche" empties on the east bank of the Bras Saint-Nicolas. This confluence is located upstream from the bridge at a place called "Les Chandelles", downstream from the "Toupin waterfall" and north-west of the center of the village of Saint-Cyrille-de-Lessard.[1]
The toponym "Bras de Riche" was made official on May 31, 1983, at the Commission de toponymie du Québec.[2]