| Rivière aux Plats | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Côte-Nord |
| Subdivision Type4: | Regional County Municipality |
| Subdivision Name4: | Minganie Regional County Municipality |
| Length: | 26.2km (16.3miles) |
| Source1: | Mountain stream |
| Source1 Location: | L'Île-d'Anticosti |
| Source1 Coordinates: | 49.3994°N -62.9645°W |
| Source1 Elevation: | 260m (850feet) |
| Mouth: | Gulf of Saint Lawrence |
| Mouth Location: | L'Île-d'Anticosti |
| Mouth Coordinates: | 49.2136°N -63.01°W |
| Mouth Elevation: | 1m (03feet) |
| Tributaries Left: | Three streams. |
| Tributaries Right: | Three streams. |
The rivière aux Plats (English: Flat River) is a tributary of the Gulf of St. Lawrence, flowing in the municipality of L'Île-d'Anticosti, in the Minganie Regional County Municipality, in the administrative region of North Shore, in province of Quebec, in Canada.
This valley is served by a network of forest roads for forestry and recreational tourism activities.
Forestry is the main economic activity in this area; recreational tourism activities, second.[1]
The Rivière aux Plats draws its source from a mountain stream (altitude:), located in the center-south of the island, just south of the forest road (east–west direction). This source is located in a forest area at:
From its source, the Rivière aux Plats descends between the Chicotte River (located on the west side) and the Pavillon River (east side). The Rivière aux Plats generally flows south-east, then south, over with a drop of, according to the following segments:
The Rivière aux Plats drains into a small bay on the south shore of Anticosti Island, in the Gulf of St. Lawrence, on the west side of Cap des Caps. This confluence is located west of the mouth of the Pavillon River, east of the mouth from the Chicotte River and at east of the center of the village of Port-Menier.[2]
The toponym “rivière aux Plats” was made official on September 12, 1974.[3]