| Rivière de la Grande Coudée | |
| 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: | Beauce-Sartigan Regional County Municipality |
| Source1: | Forest streams |
| Mouth: | Chaudière River |
| Mouth Location: | Saint-Martin |
| Progression: | Chaudière River, St. Lawrence River |
| River System: | St. Lawrence River |
| Tributaries Left: | (upstream) décharge du Lac des Îles, ruisseau des Cèdres |
| Tributaries Right: | (upstream) décharge du Lac des Îles, ruisseau des Cèdres |
The rivière de la Grande Coudée (in English: river of the great cub) is a tributary of the west bank of the Chaudière River which flows northward to empty onto the south bank of the St. Lawrence River. It flows in the municipalities of Saint-Hilaire-de-Dorset, Saint-Gédéon-de-Beauce and Saint-Martin, in the Beauce-Sartigan Regional County Municipality, in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.
The main neighboring watersheds of the Grande Coudée river are:
The Grande Coudée river has its source in a swamp straddling the townships of Dorset and Gayhurst, very close (north side) of the boundary between the Beauce-Sartigan Regional County Municipality (RCM) and Le Granit Regional County Municipality (RCM). Its source is located north-west of the bridge in the village of Saint-Ludger, at north-east of Drolet Lake, located in the municipality of Lac-Drolet.
From its source, the Grande Coudée river flows over divided into the following segments:
The Grande Coudée River empties on the west bank of the Chaudière River at Saint-Martin. Its confluence is upstream from the bridge in the village of Saint-Martin and downstream from the village of Saint-Gédéon-de-Beauce.[1]
In history, this watercourse has often been referred to as the “Grande Coulée”, especially since 1937. In other times, this river has been designated “Grande Coudée” by the inhabitants of this sector; and this name has been attested in particular by Vondenvelden and Charland, 1803, and Bouchette, 1832.
The term "flow" popularly denotes a ravine, usually having an intermittent stream. The term "cubit" reflects the geographical particularities of the course of this river. As early as 1860, pioneers settled at the Grande Coudée, i.e. at the mouth of this watercourse. A Catholic mission will be known there under the name of Grandes-Coudées.[2]
The toponym Rivière de la Grande Coudée was made official on October 19, 1990, at the Commission de toponymie du Québec.[3]