| Rivière du Moulin | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Capitale-Nationale |
| Subdivision Type4: | MRC |
| Subdivision Name4: | L'Île-d'Orléans Regional County Municipality |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Saint-Pierre-de-l'Île-d'Orléans |
| Length: | 6.4km (04miles) |
| Source1: | Agricultural area |
| Source1 Location: | Saint-Pierre-de-l'Île-d'Orléans |
| Source1 Coordinates: | 46.9153°N -71.0278°W |
| Source1 Elevation: | 110m (360feet) |
| Mouth: | Chenal de l'Île d'Orléans (Saint Lawrence River) |
| Mouth Location: | Saint-Pierre-de-l'Île-d'Orléans |
| Mouth Coordinates: | 46.8983°N -71.0894°W |
| Mouth Elevation: | 4m (13feet) |
The rivière du Moulin is a tributary of chenal de l'Île d'Orléans, flowing in the municipality of Saint-Pierre-de-l'Île-d'Orléans, in the L'Île-d'Orléans Regional County Municipality, in the administrative region of Capitale-Nationale, in the province of Quebec, in Canada.
The lower part of this small valley is served by Chemin Royale (route 368) which bypasses all of Île d'Orléans. Besides the area near the main road, agriculture is the main economic activity in this small valley.
The surface of the Moulin river is generally frozen from the beginning of December until the end of March, except the rapids areas; however, safe circulation on the ice is generally done from mid-December to mid-March. The water level of the river varies with the seasons and the precipitation; the spring flood occurs in March or April.
The Moulin river takes an agricultural area in Saint-Pierre-de-l'Île-d'Orléans, south of a marsh area which is also drained on the north side by the rivière Pot au Beurre (île d'Orléans) and on the east side by a stream on the side of the Maheu River.[1] This marsh straddles the boundary of the municipalities of Sainte-Famille-de-l'Île-d'Orléans and Saint-Pierre-de-l'Île-d'Orléans. This source of the Moulin river is located west of the mouth of the Maheu River, east from chenal de l'Île d'Orléans and northeast of the village center of Saint-Pierre-de-l'Île-d'Orléans.[1]
From this source, the course of the Moulin stream descends on, with a drop of, according to the following segments:
The Moulin river flows on the south bank of the chenal de l'Île d'Orléans (which is connected to the Saint Lawrence River) at the height of the village of Saint-Pierre-de-l'Île-d'Orléans. At this location, the chenal de l'Île d'Orléans is wide. This mouth faces the center of the village of L'Ange-Gardien.[2]
The toponym "Rivière du Moulin" refers to a mill erected in the 17th century along its course, probably in the lower part. Three watercourses of this island are designated according to the existence of a mill built on their respective watercourse.[3]
The toponym "rivière du Moulin" was formalized on August 8, 1977 at the Place Names Bank of the Commission de toponymie du Québec.[4]