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

The main hydrographic slopes adjacent to the Again River are: The Again River originates at the mouth of Lake Mine (length: 3.4 kilometres (2.1 mi), elevation: 267 metres (876 ft)) in the eastern part of the Cochrane District.

The source of the Again River is located at: From its source, the Again River runs more or less parallel to the Ontario border on 119.9 kilometres (74.5 mi) in the following segments: The Again River flows into the southwestern shore of the Harricana River in front of Low Shoal Island.

This confluence is located at: The hydronyme "rivière Again" was formalized on December 5, 1968, by the Commission de toponymie du Québec, at the creation of this commission.

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