The Mazarin river flows entirely in the canton of Théberge. Forestry is the main economic activity of this valley; recreational tourism activities, second.
The surface of the Mazarin River is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.
Geography
The hydrographic slopes near the Mazarin river are:
The Mazarin River originates at the mouth of lake Mazarin (length: 2.8 kilometres (1.7 mi) altitude: 327 metres (1,073 ft)). The mouth of this head lake is located at:
The Mazarin River flows on the north bank of the Ashuapmushuan River, which is 9.1 kilometres (5.7 mi) upstream from the confluence of the Du Chef River. From the confluence of the Mazarin River, the current flows down the Ashuapmushuan River (length: 193 kilometres (120 mi), to the southeast, which flows to Saint-Félicien, Quebec on the west shore of Lac Saint-Jean.