| Couchepaganiche 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: | Lac-Saint-Jean-Est Regional County Municipality |
| Subdivision Type5: | Municipalities |
| Subdivision Name5: | Métabetchouan–Lac-à-la-Croix |
| Length: | 14.3km (08.9miles) |
| Discharge1 Location: | Métabetchouan–Lac-à-la-Croix |
| Source1: | Little unidentified lake |
| Source1 Location: | Métabetchouan–Lac-à-la-Croix |
| Source1 Coordinates: | 48.3013°N -71.8404°W |
| Source1 Elevation: | 400 |
| Mouth: | Couchepaganiche River |
| Mouth Location: | Métabetchouan–Lac-à-la-Croix |
| Mouth Coordinates: | 48.3947°N -71.84°W |
| Mouth Elevation: | 133m (436feet) |
The Couchepaganiche East River is a tributary of the Couchepaganiche River, flowing in the municipality of Métabetchouan–Lac-à-la-Croix, in the Lac-Saint-Jean-Est Regional County Municipality, in the administrative region of Saguenay–Lac-Saint-Jean, in the province of Quebec, in Canada.
The lower part of the Couchepaganiche East River valley is served indirectly by the route 169 which runs along the southeast shore of lac Saint-Jean. This valley is also served by some secondary forest roads, especially for forestry and recreational tourism activities.[1]
Forestry and agriculture are the main economic activities in this valley; recreational tourism, second.
The surface of the Couchepaganiche East River is usually frozen from the beginning of December to the end of March, however the safe circulation on the ice is generally made from mid-December to mid-March.
The main watersheds adjacent to the Couchepaganiche East River are:
The Couchepaganiche East river originates from an unidentified lake (length: 0.2km (00.1miles); altitude: 400m (1,300feet)) in a forest area, located south of the Montagne des Trois Round peaks. This source is located at:
From its source, the Couchepaganiche East river flows over 14.3km (08.9miles) with a drop of 267m (876feet) entirely in forest and agricultural zone, according to the following segments:
The Couchepaganiche East river flows into a bend on the south bank of the Couchepaganiche River, just north of the 3rd range West road. This confluence is located at:
From the mouth of the Couchepaganiche River East, the current follows the course of the Couchepaganiche River on 6.8km (04.2miles) to the northwest, crosses Lake Saint-Jean north on 17.6km (10.9miles), then take the course of the Saguenay River via La Petite Décharge on 172.3km (107.1miles) until Tadoussac where it merges with the Saint Lawrence estuary.[2]
This river was formerly designated "Baillargeon river", "Petit Bras" and "Couchepaganiche stream". This toponym is linked to the main river “Rivière Couchepaganiche”.[3]
The toponym “Rivière Couchepaganiche Est” was formalized on December 5, 1968, at the Place Names Bank of the Commission de toponymie du Québec.[4]