Blanche River (Montmorency River tributary)

The Rivière Blanche (French pronunciation: [ʁivjɛʁ blɑ̃ʃ], lit. 'White River') is a tributary of the east bank of the Montmorency River. It flows in the unorganized territory of Lac-Jacques-Cartier, in the La Côte-de-Beaupré Regional County Municipality, in the administrative region of Capitale-Nationale, in the province of Quebec, in Canada. This valley is served by two secondary forest roads going up each side of the course of the river; a third forest road serves the upper part. Forestry is the main economic activity in this valley; second, recreational tourism. Because of its altitude, the surface of the upper part of the Blanche River is generally frozen from the end of November to the beginning of April; however, safe circulation on the ice is generally done from mid-December to the end of March. The lower part of the river course has a freezing period of about a week less than the upper part. The water level of the river varies with the seasons and the precipitation; the spring flood occurs in March or April.

The Blanche River rises in Lac la Blanche (length: 0.9 kilometres (0.56 mi); altitude: 853 metres (2, 799 ft)). The mouth of this lake is located at: 1.0 kilometre (0.62 mi) south-east of the limit of Montmorency Forest; 2.1 kilometres (1.3 mi) south of the limit of the Laurentides Wildlife Reserve; 3.0 kilometres (1.9 mi) west of the course of the Rivière des Neiges; 3.7 kilometres (2.3 mi) south-east of the summit of André-Lafond Mountain (altitude: 1,000 metres (3, 300 ft)); 3.9 kilometres (2.4 mi) north-east of the mouth of the Blanche river and the Montmorency River; 8.1 kilometres (5.0 mi) east of Route 175, connecting the town of Quebec to the town of Saguenay; 29.3 kilometres (18.2 mi) northwest of the northwest shore of the St. Lawrence River. From the mouth of Lac la Blanche, the Blanche river descends on 6.9 kilometres (4.3 mi), with a drop of 293 metres (961 ft) according to the following segments:

Flows through: Canada.

River data from Wikidata (CC0); lengths normalised to a common unit.