Ilomska is right tributary of the Ugar river in (Bosnia). It is about in length, and its source is Vlaà ¡iàMountain. It is an essential body of water for surrounding wildlife. Ilomska flows between the à ½eà ¾niÃÂka Greda (altitude ) and Javorak () mountains. It has a curved flow around Lisina () and Runjavica () mountains, through coniferous (fir and spruce) and mixed spruce-beech woods.
Its flow below Petrovo polje () has sharp curves.
The richest right contributors are Manatovac (large stream), Mala Ilomska (Little Ilomska) and Devetero vrela (Nine springs), and left tributary Crna rijeka (Black River). At the Ravni Omar (mountain meadows), below Lisina Mountain, it enters a narrow highland continuing to âÂÂKoriÃÂanski mostâ (KoriÃÂani's Bridge), and a deep canyon below KoriÃÂanske stijene and MariÃÂa stijene (MariÃÂi's Rocks).
After two attractive Ilomska waterfalls, the river flows into the Ugar, a few kilometers downstream from Vitovlje village. The height of the bigger water flow is even (around) . Waterfalls in this wilderness attract mountain-climbers, tourists and fishermen, and the vertical rocky wall under the river's falls is suitable for alpinist exercises.
Above Ilomska River there is KoriÃÂani village and a canyon below it (KoriÃÂanske stijene), the scaffold of more than 200 Bosniaks and Croats â the victims of the Serbs Police and Army forces (on August 21, 1992), a crime prosecuted and sentenced through number of indictments at The ICTY Tribunal in The Hague.