Jezerka is an eastern tributary (class H - Hydrographic, freshwater stream) of Europe's Vrbanja River.

It flows from the western slopes of the Uzlomac, beginning at 900 meters above sea level, south of the villages of Grabik and Jankovine.

The river delta is several kilometers upstream from Vrbanjci, along the main motorway M-4 (Banja Luka – Doboj).

[3] On the plateau of its upper flow, crossroads lead to the village of Gornji Obodnik and to the M-4 motorway.

[5][6][7][8][9] The Jezerka runs through the Republika Srpska and Bosnia and Herzegovina in Southeastern Europe, with an average elevation of 336 meters.