| Péribonka East River | |
| Pushpin Map: | Quebec |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Type4: | Regional County Municipality |
| Subdivision Name4: | Le Fjord-du-Saguenay Regional County Municipality |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Eeyou Istchee Baie-James |
| Length: | 54.8km (34.1miles)[1] |
| Discharge1 Location: | Saguenay (city) |
| Source1: | Lac de l’Agoseris |
| Source1 Location: | Eeyou Istchee Baie-James (municipalité) |
| Source1 Coordinates: | 52.2883°N -70.5348°W |
| Source1 Elevation: | 787m (2,582feet) |
| Mouth: | Péribonka River |
| Mouth Location: | Mont-Valin |
| Mouth Coordinates: | 51.8531°N 71.2456°W |
| Mouth Elevation: | 570m (1,870feet) |
| Tributaries Left: | (from the mouth) |
| Tributaries Right: | (from the mouth) |
The Péribonka East River is a tributary of the Péribonka River, flowing in the province of Quebec, in Canada. This watercourse crosses the administrative regions of:
Forestry is the main economic activity in the sector; recreational tourism activities are incidental considering the geographic remoteness and lack of access roads.
The surface of the Péribonka East River is usually frozen from the end of November to the beginning of April, however the safe circulation on the ice is generally done from mid-December to the end of March.
The main hydrographic slopes neighboring the Péribonka Est river are:
The Péribonka Est river takes its source at the mouth of the Agoseris lake (length: 4.3km (02.7miles); altitude: 787m (2,582feet)) in the municipality of Eeyou Istchee Baie-James. The mouth of this lake is located at:
From its source, the Péribonka East River flows over 54.8km (34.1miles) over an elevation of 217m (712feet) entirely in the forest zone, according to the following segments:
The Péribonka Est river flows on the East bank of the Péribonka river. This mouthpiece is located at:
From the mouth of the Péribonka East river, the current descends the course of the Péribonka river on 602.7km (374.5miles) to the South, crosses Lac Saint-Jean on 29.3km (18.2miles) towards the East, then follows on 155km (96miles) the course of the Saguenay River towards the East up to the height of Tadoussac where it merges with the Saint Lawrence River.[4]
The term "Péribonka" derives from the Montagnais term "pelipaukau", meaning "river digging in the sand, where the sand moves".
The toponym of “Rivière Péribonka Est” was formalized on December 18, 1986, at the Place Names Bank of the Commission de toponymie du Québec.[5]