| Plantain River | |
| 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: | 8.5km (05.3miles) |
| Source1: | Lake Supérieur |
| Source1 Location: | L'Île-d'Anticosti |
| Source1 Coordinates: | 49.8893°N -64.3781°W |
| Source1 Elevation: | 68m (223feet) |
| Mouth: | Gulf of Saint Lawrence |
| Mouth Location: | L'Île-d'Anticosti |
| Mouth Coordinates: | 49.8308°N -64.3781°W |
| Mouth Elevation: | 1m (03feet) |
| Tributaries Left: | (upstream) |
| Tributaries Right: | (upstream) |
The Plantain River (French: Rivière Plantain) is a tributary of the Gulf of Saint Lawrence, flowing in the municipality of L'Île-d'Anticosti, in the Minganie Regional County Municipality, in the administrative region of Côte-Nord, in province of Quebec, in Canada.
The Plantain River is the westernmost river on Anticosti Island.
The Plantain River has its source at Lake Superior (length: ; altitude:) located at the western end of Anticosti Island. The mouth of Lake Superior is located at the end of the bay on the west shore, at:
From its source, the Plantain River flows south between the western end of Anticosti Island and the Gamache River (located on the east side).
From the mouth of Lake Superior, the course of the Plantain River descends towards the south with a drop of, according to the following segments:
The Plantain River flows into the Gulf of Saint Lawrence, via Jolliet Bay which has a width: at the entrance to the bay, that is to say at the height of the Pointe of the castle. Jolliet bay turns out to be a sub-element of Gamache bay (length: ; width: at the entrance to the bay), on the shore south of Anticosti Island. At low tide, the sandstone at the mouth of the Plantain River can stretch as far as towards the centre of the bay.
This confluence of the river and the bay (at high tide) is located at east of Pointe aux Pointe-Ouest of Anticosti Island, at southeast of the north shore of the island and west of the centre of the village of Port-Menier. Gamache bay includes Jolliet bay (located to the northwest) and Navots bay (located to the northeast).[1]
The toponymic designation "rivière Plantain" appears in a volume published in 1904 and also in 1924 in the Bulletin de la Société de Géographie de Québec.
The toponym "Rivière Plantain" was made official on December 5, 1968.[2]