[1] The river takes its source at an altitude of 1,180 m some 700 m northwest of the summit of Zhrebche (1,373 m) in the Sveti Nikola section of the northwestern part of the Balkan Mountains.

The river forms a gorge between the villages of Salash and Granichak.

Its valley then widens and the river flows into the Archar at an altitude of 161 m at the village of Kladorub.

[1] Its drainage basin covers a territory of 124 km2, or 34% of the Archar's total.

[1] The average annual discharge at the village of Veshtitsa is 0.7 m3/s.