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

The river begins at the northwest bay of Borden Lake in geographic Cochrane Township,[2] and flows north under Ontario Highway 101.

It heads northeast, then east, enters geographic Borden Township,[3] and takes in the left tributary Briggs Creek.

The heads southeast, takes in the right tributary Westover Creek, then flows northeast through the Mate Lakes where it enters geographic McGee Township.

[4] It briefly flows northeast through the southeast corner of the township, continues northeast into geographic Chewett Township,[5] then turns northwest and reaches its mouth at the southern tip of Nemegosenda Lake.