The Argeș is a river in Southern Romania, a left tributary of the Danube. 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. Its average discharge at the mouth is 71 m3/s (2,500 cu ft/s).
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 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. Its length is 43 km (27 mi) and its basin size is 250 km2 (97 sq mi).
The Lotru is a right tributary of the river Olt in Romania. Its source is in the Parâng Mountains. It feeds the reservoirs Vidra, Malaia and Brădișor. It flows into the Olt in Golotreni, near the town Brezoi. It passes through the communes Voineasa, Malaia, and Brezoi. Its length is 83 km (52 mi) and its basin size is 990 km2 (380 sq mi).
The Rosua is a right tributary of the river Șieu in Romania. It discharges into the Șieu in Șintereag. Its length is 21 km (13 mi) and its basin size is 138 km2 (53 sq mi). Its tributaries are Valea Aurului, Valea Lungă and Valea Blăjenilor, all from the left.
The Firiza is a right tributary of the river Săsar in Maramureș County, Romania. It discharges into the Săsar in Baia Mare. Its length is 28 km (17 mi) and its basin size is 168 km2 (65 sq mi). The Strâmtori Dam is built on the river Firiza.
The Brătei is a right tributary of the river Ialomița in Romania. Its source is in the Bucegi Mountains. It flows into the Ialomița in Dobrești. Its length is 14 km (8.7 mi) and its basin size is 55 km2 (21 sq mi).
The Jiul de Vest is a headwater of the river Jiu in Romania. At its confluence with the Jiul de Est in Iscroni, the Jiu is formed. Its length is 54 km (34 mi) and its basin size is 496 km2 (192 sq mi). The upper course of the river is also known locally as Câmpușelu.
The Timiș or Timișul Sec is a right tributary of the river Ghimbășel in Romania. Its source is in the Piatra Mare Mountains, northeast of Predeal. It discharges into the Ghimbășel in Sânpetru. It flows through the eastern part of the city Brașov. Its length is 35 km (22 mi) and its basin size is 105 km2 (41 sq mi). Part of its water is diverted towards the Timiș Canal.
The Ghimbășel is a left tributary of the river Bârsa in Romania. Its source is in the northern part of the Bucegi Mountains. Originally it discharged directly into the Olt, but much of its flow has been diverted into the Bârsa, another tributary of the Olt, near Colonia Bod. Its length is 67 km (42 mi) and its basin size is 533 km2 (206 sq mi). The former lower course of the Ghimbășel, downstream of this diversion, still exists and is used for the discharge of local inflows. It flows into the Olt north of Bod. Its length is 6 km (3.7 mi) and its basin size is 8 km2 (3.1 sq mi).
The Valea Cheii is a left tributary of the river Dâmbovița in Romania. Its source is in the Leaota Mountains. It flows into the Dâmbovița downstream from Podu Dâmboviței. Its length is 14 km (8.7 mi) and its basin size is 35 km2 (14 sq mi).
The Drăgan is a left tributary of the river Crișul Repede in Romania. It discharges into the Crișul Repede near Valea Drăganului. Its length is 42 km (26 mi) and its basin size is 254 km2 (98 sq mi).
The Valea de Pești is a right tributary of the river Jiul de Vest in Romania. It flows into the Jiul de Vest near Câmpu lui Neag. The Valea de Pești Dam is built on this river. Its length is 11 km (6.8 mi) and its basin size is 32 km2 (12 sq mi).
The Valea lui Coman is a left tributary of the river Dâmbovița in Romania. Its source is in the Leaota Mountains. It flows into the Dâmbovița in Valea Cetățuia. Its length is 12 km (7.5 mi) and its basin size is 22 km2 (8.5 sq mi).
The Izvorul Dorului is a right tributary of the river Prahova in Romania. It discharges into the Prahova in Sinaia. Its length is 16 km (9.9 mi) and its basin size is 33 km2 (13 sq mi).
The Dâmbovicioara is a left tributary of the river Dâmbovița in Romania. Its source is in the Piatra Craiului Mountains. It flows into the Dâmbovița in Podu Dâmboviței. Its length is 13 km (8.1 mi) and its basin size is 47 km2 (18 sq mi). Upstream from its confluence with the Valea cu Apă it is also called Valea Seacă a Pietrelor, and between the confluences with the Valea cu Apă and Valea Muierii it is also called Brusturet.
The Sadu is a right tributary of the river Cibin in Romania. It discharges into the Cibin in Tălmaciu. The Negovanu and Sadu II dams are located on the Sadu. Its length is 60 km (37 mi) and its basin size is 278 km2 (107 sq mi).
The Valea Fânețelor is a left tributary of the river Barcău in Romania. It discharges into the Barcău near Cenaloș. It flows through the villages Cuieșd, Țigăneștii de Criș, Picleu, Brusturi, Păulești, Gurbești, Spinuș, Ciulești and Sărsig. Its length is 30 km (19 mi) and its basin size is 178 km2 (69 sq mi).
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. Its length in Romania is 134 km (83 mi).
The Derna is a right tributary of the river Valea Fânețelor in Romania. It flows into the Valea Fânețelor in Sărsig. Its length is 13 km (8.1 mi).
