It rises on the western slopes of Uzlomac (at about 450 m).

[1][2][3] The only significant tributary of Crna River is Dugi Creek (Dugi potok / Дуги поток, "Long Creek"), which is longer than itself.

Its mouth is at the town of the same name, Crna River, on the M4 road (Banja Luka – Kotor Varoš – Matuzići – Doboj).

Its lower course is the border between Čelinac and Kotor Varoš municipalities.

This article related to a river in Bosnia and Herzegovina is a stub.