The Barcău or Bereteu is a river which has its origin in Sălaj County, Romania. It is about 167 kilometres long with a watershed area of 5,812 km2. After crossing Bihor County in Romania and Hajdú-Bih
Petreu is a commune in Bihor County, Crișana, Romania with a population of 3,080 people as of 2021. It is composed of four villages: Abrămuț, Crestur, Făncica, and Petreu.