The Garneau River is a tributary of the Turgeon River flowing in Canada in: The surface of the river is usually frozen from early from November to mid-May, but safe circulation on the ice generally occurs from mid-November to the end of April.

The main watersheds adjacent to the Garneau River are: The Garneau River originates at the mouth of a lake Garneau (length: 0.3 metres (1 ft 0 in); elevation: 286 metres (938 ft)), in Cochrane District, in Ontario.

The mouth of Lake Garneau is located at: From its source, the Garneau River flows on 22.9 kilometres (14.2 mi) according to the following segments: The Garneau River flows to the southwest bank of the Turgeon River.

This confluence is located at: The term "Garneau" is a surname of a family of French origin.

The name "rivière Garneau" was officially registered on December 5, 1968, at the Commission de toponymie du Québec, at the creation of this commission.