A forest road branch serves the valley of the Kakospictikweak River and the peninsula which stretches north on 30.1 kilometres (18.7 mi).

This road branch connects to route 400 which bypasses the north-eastern part of the Gouin Reservoir; it connects the village of Parent, Quebec (via the Bazin River) and the village Wemotaci, Quebec which is located west of La Tuque.

The surrounding hydrographic slopes of the Kakospictikweak River are: The Kakospictikweak River originates at the mouth of an unidentified lake (length: 0.5 kilometres (0.31 mi), altitude: 484 metres (1,588 ft)) located in the township of Pfister, in Eeyou Istchee James Bay (municipality).

The mouth of this head lake is located at: From the mouth of the head lake, the course of the Kakospictikweak River flows over 44.4 kilometres (27.6 mi) according to the following segments: Upper course of the Kakospictikweak River (segment of 22.7 kilometres (14.1 mi)) Lower course of the Kakospictikweak River (segment of 21.7 kilometres (13.5 mi)) The confluence of the Kakospictikweak River with the Gouin Reservoir is located at: The Kakospictikweak River flows into the Township of Mathieu at the bottom of a bay stretching over 5.8 kilometres (3.6 mi), e.g. the Northern part of Omina Lake on the north shore of the [[Gouin Reservoir]]; this bay is barred on the east side by a peninsula stretching southward on 5.6 kilometres (3.5 mi) and on the west side by an advanced land to a strait separating it from a large deformed island with a length of 22.9 kilometres (14.2 mi).

The toponym "Rivière Kakospictikweak" was formalized on September 6, 1984 at the Commission de toponymie du Québec.