The Baie des Rochers River is a tributary of the northwest shore of the St. Lawrence River, flowing into the town of Saint-Siméon, in the Charlevoix-Est Regional County Municipality, in the Capitale-Nationale administrative region, Quebec, Canada.

Nevertheless, safe ice traffic is generally from late December to mid-March.

At the edge of this lake, the resort is established around the southeast bay, because of the secondary road that serves this area.

From the mouth of Port aux Quilles Lake, the course of the Port aux Quilles River descends by traveling 9.9 km (6.2 mi) according to the following segments: This toponym refers to the rocks all around the bay and on "Baie des Rochers Island" which is located in the middle of the bay.

The toponym "Rivière de la Baie des Rochers" was formalized on December 5, 1968 at the Bank of place names of the Commission de toponymie du Quebec.