The surrounding hydrographic slopes of the Kakospictikweak River are: • north side: Compton Lake, Nemegousse Lake,
Cawcot River,
Caopatina Lake; • east side: Dubois Lake,
Normandin Lake (Normandin River),
Normandin River,
Buade Lake (Normandin River); • south side:
Gouin reservoir; • west side:
Mathieu River,
Toussaint River, Baptiste Lake, Larouche Lake,
De La Rencontre Creek,
Pascagama River. The Kakospictikweak River originates at the mouth of an unidentified lake (length: , altitude: ) located in the township of Pfister, in
Eeyou Istchee James Bay (municipality). The mouth of this head lake is located at: • west of a mountain peak (altitude: ); • north of the mouth of the Kakospictikweak River (confluence with
Omina Lake which is connected to
Gouin Reservoir); • north of the village center of
Obedjiwan, Quebec (located on a peninsula on the north shore of
Gouin Reservoir); • northwest of the dam at the mouth of the
Gouin Reservoir (confluence with the
Saint-Maurice River); • north-east of the village center of
Wemotaci, Quebec; • north-west of downtown
La Tuque. From the mouth of the head lake, the course of the Kakospictikweak River flows over according to the following segments:
Upper course of the Kakospictikweak River (segment of ) • north-east, crossing a small unidentified lake (altitude: ) on , up to its mouth; • northeasterly, then southwesterly, skirting a mountain whose summit reaches and crossing a full length unidentified lake (length: ; altitude: ), to its mouth; • to the South-West including crossing a full length unidentified lake (length: ; altitude: ), to its mouth; • to the southwest, to the eastern limit of Balete. Note: This limit also corresponds to the boundary between the town of
La Tuque and
Eeyou Istchee Baie-James (municipality); • southwesterly in Balete Township, including crossing Wawackeciw Lake (length: ; altitude: ) on , to its mouth; • southerly passing on the east side of Baptiste Lake and crossing Piresiw Lake (length: ; altitude: ), until its confluence which corresponds to the limit of the cantons of Balete and Mathieu. Note: Piresiw Lake receives the Kanimepiriskak Lake outlet on the west side;
Lower course of the Kakospictikweak River (segment of ) • southeasterly by cutting a forest road to the confluence (from the north) of the
Pokotciminikew River which drains five mountain lakes upstream; • southerly collecting the outlet of Kikikwapiskok Lake to the north shore of Kaatcipekinikatek Lake; • southerly across Kaatcipekinikatek Lake (elevation: ) along its entire length to the northern boundary of Mathieu Township. Note: this lake receives on the east side the discharge of the "Froid lake"; • southwesterly, crossing over the Natowew Lake (length: ; altitude: ) to the road bridge of
route 212 in the Seskatciwan Zone; • south forming a hook to the east, to the confluence of the Kakospictikweak River with the
Gouin Reservoir. The confluence of the Kakospictikweak River with the
Gouin Reservoir is located at: • northwest of
Gouin Dam; • north-east of the village center of
Obedjiwan, Quebec; • northwest of the village center of
Wemotaci, Quebec; • north-west of downtown
La Tuque; • northwest of the mouth of the
Saint-Maurice River (confluence with the
St. Lawrence River at
Trois-Rivières). The Kakospictikweak River flows into the Township of Mathieu at the bottom of a bay stretching over , 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 and on the west side by an advanced land to a strait separating it from a large deformed island with a length of . From the mouth of this bay, the current flows south-easterly across the Gouin reservoir to the southeast, skirting several islands and passing through the
Kikendatch Bay, up to the
Gouin dam. From there, the current flows along the
Saint-Maurice River to
Trois-Rivières, where it flows into the
St. Lawrence River. == Toponymy ==