Ier
The Ier or Eriu is a right tributary of the river Barcău in Romania and Hungary. It discharges into the Barcău in Pocsaj. The Andrid Dam is constructed on this river. The Ier flows through the villages Mihăieni, Eriu-Sâncrai, Ghirolt, Rădulești, Hotoan, Sudurău, Dindești, Andrid, Sălacea, Cherechiu, Săcueni, Diosig in Romania, and Pocsaj in Hungary. In Romania, its length is and its basin size is.Hydronymy
The Hungarian name of the river means "brook". The Romanian name derives from that.Tributaries
The following rivers are tributaries to the river Ier: