| Bras à Pierre | |
| Name Etymology: | a |
| Pushpin Map: | Quebec |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Saguenay-Lac-Saint-Jean |
| Subdivision Type4: | Regional County Municipality |
| Subdivision Name4: | Le Fjord-du-Saguenay Regional County Municipality |
| Subdivision Type5: | Municipalities |
| Subdivision Name5: | Ferland-et-Boilleau and Rivière-Éternité |
| Length: | 9km (06miles)[1] |
| Discharge1 Location: | L'Anse-Saint-Jean |
| Source1: | Streams in marsh area |
| Source1 Location: | L'Anse-Saint-Jean |
| Source1 Coordinates: | 48.1101°N -70.4342°W |
| Source1 Elevation: | 368m (1,207feet) |
| Mouth: | Rivière Saint-Jean |
| Mouth Location: | L'Anse-Saint-Jean |
| Mouth Coordinates: | 48.16°N -70.4108°W |
| Mouth Elevation: | 174m (571feet) |
The Bras à Pierre is a tributary of the Saint-Jean river, flowing in the municipality of L'Anse-Saint-Jean, in the Le Fjord-du-Saguenay Regional County Municipality, in the administrative region of Saguenay–Lac-Saint-Jean, in the province from Quebec, to Canada.
The valley of "Bras à Pierre" (English: Pierre's arm) is served by the Périgny road for forestry, agriculture and recreational tourism activities. Some secondary forest roads serve this valley.
Forestry is the main economic activity in the sector; recreational tourism activities, second; agriculture in third. This valley contains some dwellings distributed in small deforested areas.
The surface of "Bras à Pierre" is usually frozen from the beginning of December to the end of March, however the safe circulation on the ice is generally done from mid-December to mid-March.
The main watersheds neighboring the "Bras à Pierre" are:
The "Bras à Pierre" originates in the marsh area (length: 2.7km (01.7miles); maximum width: 0.4km (00.2miles))) between the mountains in the northern part of the Rivière à la Catin. This marsh area is fed by a few mountain streams. This source of the watercourse is located at:
From the mouth of its source, the course of "Bras à Pierre" descends on 9km (06miles), according to a drop in level of 194m (636feet) according to the following segments:
Pierre's arm spills out onto the south bank of the Saint-Jean River. This mouth is located at:
From the confluence of "Bras à Pierre", the current:
The term "Pierre" is a male given name.
The toponym "Bras à Pierre" was formalized on December 5, 1968, by the Commission de toponymie du Québec.[3]