The Jacob River is a tributary of the north shore of the Malbaie River flowing generally southward successively into zec du Lac-au-Sable into the unorganized territory of Mont-Élie, in the city of La Malbaie and in the city ofClermont at the end of the course, in Charlevoix-Est Regional County Municipality, in Quebec, Canada. With a difference of, the Jacob River flows southerly in a forest zone between the Snigole River and the Comporté River. After several rounds of rapids, waterfalls and falls in the forest area, the Jacob River flows into the Malbaie River in front of downtown Clermont. This small forest valley is mostly accessible in its lower part by the Marais road which goes to the North, and in its upper part by a secondary forest road serving the west bank of the river. Forestry is the main economic activity of the sector; recreational tourism activities, 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.
Geography
The Jacob River has its source at Jacob Lake located in Zec du Lac-au-Sable. This wild lake is located in a small forest valley. This lake is enclosed by mountains with a peak of in the east, in the southwest, and another of to the northwest. A stream on the north shore of this lake drains a small valley. Hydro-Québec high-voltage lines pass onthe west side of the lake. From the dam at the outlet of Jacob Lake, the current flows southward along the following segments:
to the south in elevation of 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;
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";
to the south, crossing several series of rapids and waterfalls, to the Lac des Lacs bridge;
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 upstream of the mouth of the Jacob River. The concrete-gravity type structure with a height of and a length of was built in 1938. The confluence of the Jacob River is located opposite a municipal park in downtown Clermont, at 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.
