Jacob River (Quebec)

The Jacob River has its source at Jacob Lake (length: 0.8 km (0.50 mi), altitude: 443 m (1,453 ft)) located in Zec du Lac-au-Sable. This wild lake is located in a small forest valley (in the north-south axis). This lake is enclosed by mountains with a peak of 800 m (2,600 ft) in the east, 880 m (2,890 ft) in the southwest, and another of 636 m (2,087 ft) to the northwest. A stream on the north shore of this lake drains a small valley. Hydro-Québec high-voltage lines (north-south direction) pass on the west side of the lake.

From the dam at the outlet of Jacob Lake, the current flows southward along the following segments:

• 7.9 km (4.9 mi) to the south in elevation of 182 m (597 ft) crossing several series of rapids and waterfalls, first in the unorganized territory of Mont-Élie then in the territory of the town of La Malbaie, until the first bridge of the Chemin des Marais;
• 1.4 km (0.87 mi) to the south crossing several series of rapids and waterfalls, and entering the territory of Clermont, to the second bridge of the "chemin des Marais";
• 4.1 km (2.5 mi) to the south, crossing several series of rapids and waterfalls, to the Lac des Lacs bridge;
• 1.0 km (0.62 mi) to the south passing through agricultural and industrial territory, and passing under the railway bridge, until its confluence with the Malbaie River.

For regulatory purposes, a low-capacity dam owned by the Government of Quebec was erected on the Jacob River 1.0 km (0.62 mi) upstream of the mouth of the Jacob River. The concrete-gravity type structure with a height of 4.1 m (13 ft) and a length of 20.0 m (65.6 ft) was built in 1938.[2]

The confluence of the Jacob River is located opposite a municipal park in downtown Clermont, at 1.1 km (0.68 mi) downstream of the dam which creates a widening of the Malbaie River and a hundred meters upstream from the railway bridge over the Malbaie River in downtown Clermont.

The term "Jacob" refers to the memory of a former owner of a lot of land around Lake Jacob. According to the Commission de toponymie du Québec, four mills were built and operated along its route: two saw mills, a flour mill and a wool card mill.

The name "Jacob River" was formalized on December 5, 1968 at the Place Names Bank of the Commission de toponymie du Québec.[3]

• Zec du Lac-au-Sable, a controlled harvesting zone
• Mount-Élie, unorganized territory
• Clermont, a municipality
• La Malbaie, a city
• Malbaie River, a watercourse
• List of rivers of Quebec