| Port-au-Saumon River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Capitale-Nationale |
| Subdivision Type4: | Regional County Municipality |
| Subdivision Name4: | Charlevoix Regional County Municipality |
| Subdivision Type5: | City |
| Subdivision Name5: | La Malbaie |
| Length: | 20.8km (12.9miles)[1] |
| Discharge1 Location: | La Malbaie |
| Source1: | Port-au-Saumon Lake |
| Source1 Location: | La Malbaie |
| Source1 Coordinates: | 47.8424°N -70.0101°W |
| Source1 Elevation: | 288m (945feet) |
| Mouth: | St. Lawrence River |
| Mouth Location: | La Malbaie |
| Mouth Coordinates: | 47.7553°N 69.9536°W |
| Mouth Elevation: | 0m (00feet) |
| Tributaries Left: | (from the mouth) Marguerite creek, discharge of "Port au Persil Lake". |
The Port-au-Saumon River is a tributary of the northwest shore of the St. Lawrence River, flowing into the town of La Malbaie, into the Charlevoix-Est Regional County Municipality, in the Capitale-Nationale administrative region, Quebec, Canada. The course of this river flows into the St. Lawrence River in the hamlet of Port-au-Saumon, northeast of the town of La Malbaie.
The lower part of the valley of this watercourse is served by route 138 which runs along the northwest shore of the St. Lawrence River and by the road of the rang Sainte-Anne. The "chemin des érables" and Port-au-Saumon Lake Road serve the upper reaches of this stream.
Forestry is the main economic activity of the sector; recreational and tourism activities (including vacationing around Lac au Saumon), second.
The surface of this stream is generally frozen from mid-December to late-March. Nevertheless, safe ice traffic is generally from late December to mid-March.
The main hydrographic slopes near the "Port-au-Saumon River" are:
The Port-au-Saumon River has its source at "Lac du Port-au-Saumon" (length: 0.7km (00.4miles); altitude: 288m (945feet)) which is clover-shaped deformed and in forest area. The resort is developed around the northern appendage of the lake. The mouth of the lake is at the bottom of the eastern appendage.
From the mouth of Port-au-Saumon Lake, the course of the Port-au-Saumon River descends by traveling 20.8km (12.9miles) according to the following segments:
Upper part of the Port au Saumon River (segment of 15.1km (09.4miles))
Lower part of the Port au Saumon River (segment of 5.7km (03.5miles))
The French toponym "Port-au-Saumon" is linked to the bay, the hamlet, the river and the lake.
The toponym "Port-au-Saumon River" was formalized on December 5, 1968, at the Bank of place names of the Commission de toponymie du Quebec.[4]