巴尔克乌河是东欧的河流，河道全长134公里，流域面积2,025平方公里，发源自罗马尼亚的瑟拉日县，流经比霍尔县、匈牙利的豪伊杜-比豪尔州和贝凯什州，最终在赛格豪洛姆附近注入湍克勒什河。

The Barcău or Bereteu (Romanian or Berettyó in Hungarian) is a river which has its origin in Sălaj County, Romania. It is 134 kilometres (83 mi) long with a watershed area of 2,025 square kilometres (782 sq mi). After crossing Bihor County in Romania and Hajdú-Bihar and Békés County in Hungary, it flows into the Sebes-Körös (Romanian: Crișul Repede) near Szeghalom.