The river Vrbas, which flows in the middle of its territory, divides it into the Župa (right bank of the Vrbas) and the Potkozarsko-Lijevčanski part (the left bank of the Vrbas).
The Vrbas River, positioned centrally within its boundaries, splits the region into two distinct regions: the Župa on the right bank and the Potkozarsko-Lijevčanski part on the left bank.