Osam

The Osam (Bulgarian: [ˈɔsɐm]) is a river in northern Bulgaria, a right tributary of the Danube. Its length including the main stem, the Cherni (Black) Osam, is 314 km, making it the fifth longest river in Bulgaria. The river proper, formed by the confluence of the Cherni and Beli (White) Osam, is 278 km.

Flows through: Bulgaria.

River data from Wikidata (CC0); lengths normalised to a common unit.