[1] It is in the James Bay drainage basin and is a left tributary of the Black River.

The river begins at Swan Lake in geographic Maisonville Township[2] in the Unorganized West Part of Timiskaming District.

It flows east under Ontario Highway 11 and the Ontario Northland Railway (ONR) line to Upper Twin Lake.

It then heads north, passes again under the ONR, takes in the right tributary Wolf Creek, and heads into geographic Benoit Township,[3] Cochrane District.

Other map sources: This article related to a river in Canada is a stub.