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).
The Siret or Sireth is a river that rises from the Carpathians in the Northern Bukovina region of Ukraine, and flows southward into Romania before it joins the Danube. It is 647 km (402 mi) long, of which 559 km (347 mi) in Romania, and its basin area is 44,811 km2 (17,302 sq mi), of which 42,890 km2 (16,560 sq mi) in Romania. Its average discharge is 250 m3/s (8,800 cu ft/s). In ancient times, it was named Hierasus.
The Bistrița is a river in the Romanian regions of Maramureș, Bukovina and Moldavia. It is a right tributary of the river Siret. Near Bacău it flows into the Siret. Its source is in the Rodna Mountains, at the foot of the Gârgalău peak. It flows through the counties Bistrița-Năsăud, Suceava, Neamț and Bacău. The towns Vatra Dornei, Bicaz, Piatra Neamț, Roznov, Buhuși and Bacău lie along the Bistrița. The Bistrița is 283 km long, and its basin area is 7039 km².
The Bistrița is a river in the Romanian region of Transylvania, county Bistrița-Năsăud. It is sometimes referred to as Bistrița Ardeleană River
The Olt is a river in Romania. It is 615 km (382 mi) long, and its basin area is 24,050 km2 (9,290 sq mi). It is the longest river flowing exclusively through Romania. Its source is in the Hășmaș Mountains of the eastern Carpathian Mountains, near Bălan, rising close to the headwaters of the Mureș River. It flows through the Romanian counties Harghita, Covasna, Brașov, Sibiu, Vâlcea and Olt. The river was known as Alutus or Aluta in Roman antiquity. Olt County and the historical province of Oltenia are named after the river.
Dâmbovița is a river in Romania. It has its sources in the Făgăraș Mountains, on the Curmătura Oticu. The upper reach of the rivers, upstream of the confluence with the Boarcășu River is also known as Izvorul Oticului River or Oticu River.
The Argeș is a river in Southern Romania. It is 350 km (220 mi) long, and its basin area is 12,550 km2 (4,850 sq mi). Its source is in the Făgăraș Mountains, in the Southern Carpathians and it flows into the Danube at Oltenița.
The Ialomița is a river of Southern Romania. It rises from the Bucegi Mountains in the Carpathians. It discharges into the Borcea branch of the Danube in Giurgeni. It is 417 km (259 mi) long, and its basin area is 10,350 km2 (4,000 sq mi). Ialomița County takes its name from this river.
The Prahova River is a river of Southern Romania, which rises from the Bucegi Mountains, in the Southern Carpathians. It flows into the Ialomița near Adâncata. The upper reach of the river, upstream of the junction with the Azuga River is sometimes called the Prahovița River.
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).
Bistra is a commune in Maramureș County, Romania. The Ukrainian border is located to the north of the commune. The first documentary mention of the settlement dates to 1411.
The Cerna River or Cerna Hunedoreană River or Cerna Ardeleană River 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.
The Ampoi is a river in the Apuseni Mountains, Alba County, western Romania. It is a right tributary of the river Mureș. It flows through the town Zlatna, and joins the Mureș near Alba Iulia. It is fed by several smaller streams, including Grohaș, Trâmpoiele, Ruzina, Valea Mică, Galați, Bebu and Purcăreți on the left side and Valea Petrei, Vâltori, Feneș, Valea lui Bibaț, Valea Albinei, Ampoița and Ighiu on the right side.
The Someșul Mare is a river in north-western Romania, originating in the Bistrița-Năsăud County in the Rodna Mountains at the confluence of two headwaters — the Preluci River/Pârâul Mariei) and the Zmeu River. The Someșul Mare flows west through Rodna, Năsăud and Beclean, until it meets the Someșul Mic upstream of Dej. Downstream from Dej, the river is called Someș.
The Geoagiu River is a right tributary of the river Mureș in Transylvania, Romania. It discharges into the Mureș in Teiuș.
The Strei is a left tributary of the river Mureș in Transylvania, Romania. It starts at the confluence of headwaters Pârâul Cald and Pârâul Rovinei. The upper reach of the river, upstream of the village of Baru is also known as Râul Petros. It flows through the town Călan and the villages Petros, Baru, Livadia, Pui, Galați, Băiești, Ohaba de sub Piatră, Ciopeia, Subcetate, Covragiu, Bretea Română, Bretea Streiului, Ruși, Strei, Streisângeorgiu, Batiz, Băcia and Simeria Veche. It discharges into the Mureș near Simeria.
The Pârâul de Câmpie River, also known as Luduș River or Zau de Câmpie River, is a right tributary of the river Mureș in Transylvania, Romania. It discharges into the Mureș in Luduș.
The Orăștie River is a left tributary of the river Mureș in Romania. It discharges into the Mureș near the town Orăștie.
The Sebeș is a left tributary of the river Mureș in Transylvania, Romania. The upper reach of the river is also known as Frumoasa. The Romanian and Hungarian name Sebeș and Sebes originate from the Hungarian adjective sebes meaning "speedy", while the German name means Mill Creek. The source of the river is on the south slope of the Cindrel Mountains, in the southwestern part of Sibiu County. It discharges into the Mureș in Alba Iulia.
The Barcău or Bereteu 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). After crossing Bihor County in Romania and Hajdú-Bihar and Békés County in Hungary, it flows into the Sebes-Körös near Szeghalom.
