| Bras de Jacob | |
| 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: | Unorganized territory and a city |
| Subdivision Name5: | Lac-Ministuk, Saguenay |
| Length: | 9km (06miles)[1] |
| Discharge1 Location: | Saguenay |
| Source1: | Lac Jacob |
| Source1 Location: | Lac-Ministuk |
| Source1 Coordinates: | 48.2416°N -71.1927°W |
| Source1 Elevation: | 307m (1,007feet) |
| Mouth: | rivière du Moulin |
| Mouth Location: | Saguenay |
| Mouth Coordinates: | 48.2319°N -71.1006°W |
| Mouth Elevation: | 220m (720feet) |
| Tributaries Left: | (from the mouth) Discharge of lac Desgagné. |
| Tributaries Right: | (from the mouth) Bras Henriette, discharge of lac Le Étangs, discharge of lac Cami, bras de Jacob West. |
The bras de Jacob (English: Jacob's arm) is a tributary of the rivière du Moulin, flowing successively in the Saguenay, then in the territory not organized from Lac-Ministuk, in the Le Fjord-du-Saguenay Regional County Municipality, in the administrative region of Saguenay–Lac-Saint-Jean, in the province of Quebec, in Canada. The course of bras de Jacob crosses the northwest part of the zec Mars-Moulin.
The upper part of this small valley is served by the Lac-du-Bois-Joli road which passes on the north shore of Lac Jacob. A few other secondary forest roads serve the valley of the Jacob's arm, mainly for forestry and recreational tourism activities.[2]
Forestry is the main economic activity in this valley; recreational tourism, second.
The surface of Jacob's arm 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 of bras de Jacob are:
The bras de Jacob rises at the mouth of Lake Jacob (length: 0.9km (00.6miles); altitude: 307m (1,007feet)) in the forest area. This lake is fed by the outlet (coming from the northeast) from Fournier lake, and the outlet (coming from the west) from an unidentified lake. This source is located at:
From its source, Jacob's arm flows over 9km (06miles) with a drop of 87m (285feet) entirely in the forest zone, according to the following segments:
Jacob's arm spills out onto the west bank of rivière du Moulin. This confluence is located at:
From the mouth of "Bras de Jacob", the current successively follows the course of the rivière du Moulin on 37.6km (23.4miles) towards the north, then the course from the Saguenay River on 126.1km (78.4miles) eastwards to Tadoussac where it merges with the Saint Lawrence Estuary.[3]
The toponym "bras de Jacob" was formalized on December 5, 1968, at the Place Names Bank of the Commission de toponymie du Québec.[4]