Berettyó in Hungary
|Countries||Romania and Hungary|
|• location||near Boghiș, Sălaj County, Romania|
|near Szeghalom, Békés County, Hungary|
|Length||167 km (104 mi)|
|Basin size||5,812 km2 (2,244 sq mi)|
|Progression||Crișul Repede→ Körös→ Tisza→ Danube→ Black Sea|
The Barcău or Bereteu (Romanian or Berettyó in Hungarian) is a river which has its origin in Sălaj County, Romania. It is about 167 kilometres (104 mi) long with a watershed area of 5,812 km2 (2,244 sq mi). :22 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. Its length in Romania is 134 km (83 mi).
The upper reach of the Barcău, upstream of the junction with the Răchita is locally called the Ștei, Berchesei or Bărcașu. The reach between the junctions with the Răchita and the Toplița is locally known as the Tusa. The name Barcău is only used following its confluence with the Toplița.
The following towns and villages are situated along the river Barcău, from source to mouth: in Romania: Valcău de Jos, Boghiș, Nușfalău, Ip, Suplacu de Barcău, Balc, Abram, Marghita, Abrămuț, Chișlaz, Sălard, Tămășeu, in Hungary Kismarja, Pocsaj, Gáborján, Berettyóújfalu, Szeghalom.
The following rivers are tributaries to the river Barcău (from source to mouth):
The Crișul Repede is a river in Bihor County, Crișana, Romania and in southeastern Hungary (Körösvidek). Together with the rivers Crișul Alb and Crișul Negru, it makes up the Three Criș rivers. These are considered the main rivers in the Crișana region of Romania. Historically, when Crișana was recognised as an official region, the Criș rivers were the most important rivers of the region. Its basin size is 9,119 km2 (3,521 sq mi). Its length in Romania is 171 km (106 mi).
The Mureș is a 789-kilometre-long (490 mi) river in Eastern Europe. Its drainage basin covers an area of 30,332 km2 (11,711 sq mi). It originates in the Hășmașu Mare Range in the Eastern Carpathian Mountains, Romania, rising close to the headwaters of the river Olt, and joins the Tisza at Szeged in southeastern Hungary. In Romania, its length is 761 km (473 mi) and its basin size is 27,890 km2 (10,770 sq mi).
The Bistrița is a river in the Romanian region of Transylvania, Bistrița-Năsăud County. It is sometimes referred to as Bistrița ardeleană. Near the city of Bistrița it flows into the Șieu, a tributary of the Someșul Mare. Its length is 67 km (42 mi) and its basin size is 650 km2 (250 sq mi).
The Crasna (Romanian) or Kraszna (Hungarian) is the name of a river in northwestern Romania and northeastern Hungary. The Crasna is a left tributary of the Tisza. Its source is in Transylvania, Romania, near the village of Crasna. It flows through the Romanian counties Sălaj and Satu Mare and the Hungarian county Szabolcs-Szatmár-Bereg. It flows into the Tisza in Vásárosnamény. Cities along the Crasna are Șimleu Silvaniei in Romania, Nagyecsed and Mátészalka in Hungary.
The Arieș is a left tributary of the river Mureș in Transylvania, Romania. It discharges into the Mureș in Gura Arieșului, 11 km southwest of Luduș. Its total length is 166 km (103 mi), and its drainage basin area is 3,005 km2 (1,160 sq mi).
The Crișul Alb (Romanian), is a river in western Romania, in the historical region of Transylvania, and in south-eastern Hungary.
The Crișul Negru (Romanian), is a river in western Romania (Transylvania) and south-eastern Hungary. The river has its source in the western Apuseni Mountains. It flows through the towns Ștei and Beiuș in Romania. Crossing the border of Hungary the river, now called Fekete-Körös, joins the Fehér-Körös a few kilometres north from Gyula to form the Körös river. In Romania, its length is 164 km (102 mi) and its basin size is 3,820 km2 (1,470 sq mi). Part of the water from the river Crișul Repede is diverted towards the Crișul Negru by the Criș Collector Canal.
The Cerna is a river in Romania, a left tributary of the river Danube. The Cerna has its source on the south-east side of the Godeanu Mountains and flows into the Danube near the town Orșova. The upper reach of the river is sometimes called Cernișoara. With a length of 79 km (49 mi) and its basin of 1,380 km2 (530 sq mi), it carves an erosive tectonic valley with numerous gorges, quite deep sometimes. There is a man-made lake on it (Tierna), just before it crosses the Băile Herculane spa, to perpetuate the old toponimic od Dierna. The upper course of the Cerna is part of the Domogled-Valea Cernei National Park. The Cerna flows through the villages and towns Cerna-Sat, Țațu, Băile Herculane, Pecinișca, Bârza, Topleț, Coramnic and Orșova.
The Valea Roșie or Roșia is a river in Romania, Bihor County, right tributary of the Crișul Negru. Its length is 38 km (24 mi) and its basin size is 308 km2 (119 sq mi).
The Valea Mare is a left tributary of the river Crișul Negru in Romania. It flows into the Crișul Negru near Cusuiuș. Its length is 8.9 km (5.5 mi) and its basin size is 21.7 km2 (8.4 sq mi).
The Cerna is a left tributary of the river Mureș in Transylvania, Romania. Its name both in Romanian and Hungarian languages originates from a Slav language, meaning "black (water)". Its source is in the Poiana Ruscă Mountains. It flows through the town Hunedoara and the villages Gura Bordului, Lunca Cernii de Sus, Lunca Cernii de Jos, Hășdău, Dăbâca, Toplița, Cinciș-Cerna, Teliucu Superior, Teliucu Inferior, Peștișu Mare and Sântandrei. It discharges into the Mureș near Deva. Its length is 73 km (45 mi) and its basin size is 727 km2 (281 sq mi).
The Arieșul Mare is a river in the Apuseni Mountains, Alba County, western Romania. It is the left headwater of the river Arieș. It flows through the villages Arieșeni, Gârda de Sus, Scărișoara, Albac and Vadu Moților, and joins the Arieșul Mic near Câmpeni. Its length is about 43 km (27 mi) and its basin size is about 400 km2 (150 sq mi).
The Iad is a left tributary of the river Crișul Repede in Romania. It discharges into the Crișul Repede near Bulz. Its length is 46 km (29 mi) and its basin size is 220 km2 (85 sq mi).
The Crișul Pietros is a right tributary of the river Crișul Negru in Romania. Upstream from its confluence with the Boga it is called Valea Galbena. Its length is 31 km (19 mi) and its basin size is 226 km2 (87 sq mi). It discharges into the Crișul Negru in Drăgănești.
The Bârsa is a left tributary of the river Olt in Romania. It discharges into the Olt near Feldioara. Its source is in the Făgăraș Mountains. As several tributaries also have the name Bârsa, in order to differentiate them, the main course of the river is frequently referred to as Bârsa Mare. The river Ghimbășel, formerly a direct tributary of the Olt, was redirected towards the Bârsa. Its length is 73 km (45 mi) and its basin size is 937 km2 (362 sq mi).
The Beliu is a left tributary of the river Crișul Negru in Romania. Formerly a right tributary of the Teuz, its flow is now diverted by a canal towards the Crișul Negru near Tăut, built in 1914–1919. Its length is 46 km (29 mi) and its basin size is 395 km2 (153 sq mi).
The Valea Fânețelor is a left tributary of the river Barcău in Romania. It discharges into the Barcău near Sâniob. It flows through the villages Cuieșd, Țigăneștii de Criș, Picleu, Brusturi, Păulești, Gurbeşti, Spinuș, Ciuleşti and Sărsig. Its length is 30 km (19 mi) and its basin size is 178 km2 (69 sq mi).
The Ier or Eriu is a right tributary of the river Barcău (Berettyó) 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 100 km (62 mi) and its basin size is 1,392 km2 (537 sq mi).
The Lechința or Comlod is a right tributary of the river Mureș in Transylvania, Romania. It discharges into the Mureș near Iernut. Its length is 66 km (41 mi) and its basin size is 537 km2 (207 sq mi). Its Hungarian name is from the “komló” for hops, so its name means “Hops Creek”.
The Târnava Mare is a river in Romania. Its total length is 223 km (139 mi) and its basin size is 3,666 km2 (1,415 sq mi). Its source is in the Eastern Carpathian Mountains, near the sources of the Mureș and Olt in Harghita County. It flows through the Romanian counties of Harghita, Mureș, Sibiu, and Alba. The cities of Odorheiu Secuiesc, Sighișoara, and Mediaș lie on the Târnava Mare. It joins the Târnava Mică in Blaj, forming the Târnava.
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