It originates from Duboki jarak ("Deep trench") at an altitude of 1380 m, below Blatnica Hill.

The upper waterflow goes south-east, between Omanjača (right bank, 1355m) and the Ravan (plain, 1304 m) on Runjavica (1350 m), above the eponymous village (Blatnica).

After leaving the ravine, the river flows around Jove masiff turn right to the north to the mouth.

The timber industry continues to harvest spruce and fir trees there.

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