The Koritnica (; ), with a length slightly over , is a right tributary of the SoÃÂa River. It flows west through the Log Koritnica Valley () south of Mount Mangart and then turns south near Log pod Mangartom, flowing past the Kluà ¾e Fortress and through the deep and long Kluà ¾e Canyon (), also known as the Koritnica Canyon (). It empties into the SoÃÂa southeast of Bovec.