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 average discharge at the mouth is 174 m3/s (6,100 cu ft/s). It originates in the Hășmaș Mountains of the eastern Carpathian Mountains, near Bălan, rising close to the headwaters of the river Mureș. The Olt flows through the Romanian counties of 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.
The Cârța Monastery is a former Cistercian (Benedictine) monastery in the Țara Făgărașului region in southern Transylvania in Romania, currently an Evangelical Lutheran church belonging to the local Saxon community. It lies on the left bank of the Olt River, between the cities of Sibiu and Făgăraș, close to the villages of Cârța and Cârțișoara. The monastery was probably founded in 1202–1206 by monks from Igriș Abbey, and was disbanded in 1494, when the apostolic legate Ursus of Ursinis ratified Cârța Abbey's attachment to the Provostship nullius of Sibiu. The Cistercian monastery introduced and helped develop French Gothic art in the region.
Cârțișoara is a commune in Sibiu County, Transylvania, Romania. It is composed of a single village, Cârțișoara. Bâlea Lake is located on the territory of Cârțișoara.
The Aita is a right tributary of the river Olt in Romania. It discharges into the Olt in Aita Mare. Its length is 25 km (16 mi) and its basin size is 132 km2 (51 sq mi).
The Avrig is a left tributary of the river Olt in Romania. It discharges into the Olt in the town Avrig. The upper reach of the river is also known as the Râul Mare. Its source is the Avrig Lake in the Făgăraș Mountains. Its length is 24 km (15 mi) and its basin size is 66 km2 (25 sq mi).
The Iminog is a left tributary of the river Olt in Romania. It discharges into the Olt in Mărunței. Its length is 50 km (31 mi) and its basin size is 220 km2 (85 sq mi).
The Cormoș is a right tributary of the river Olt in Romania. It discharges into the Olt in Racoșul de Sus. Its length is 54 km (34 mi) and its basin size is 545 km2 (210 sq mi).
The Vâlcele is a right tributary of the river Olt in Romania. It discharges into the Olt in Araci. Its length is 11 km (6.8 mi) and its basin size is 32 km2 (12 sq mi).
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 Lotrioara is a right tributary of the river Olt in Romania. It originates in the Lotru Mountains. The Lotrioara discharges into the Olt in Lazaret. Its length is 25 km (16 mi) and its basin size is 120 km2 (46 sq mi).
The Olteț is a right tributary of the river Olt in Romania. It discharges into the Olt in Fălcoiu. Its total length is 185 km (115 mi), and its drainage basin area is 2,663 km2 (1,028 sq mi).
The Valea Crișului is a right tributary of the river Olt in Romania. It flows into the Olt in Ghidfalău. Its length is 16 km (9.9 mi) and its basin size is 33 km2 (13 sq mi).
The Vad is a right tributary of the river Olt in Romania. It discharges into the Olt in Lazaret. Its length is 12 km (7.5 mi) and its basin size is 46 km2 (18 sq mi).
The Valea Roșie is a left tributary of the river Olt in Romania. It merges into the Olt near Bixad. Its length is 11 km (6.8 mi) and its basin size 33 km2 (13 sq mi).
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 Sâmbăta is a left tributary of the river Olt in Romania. It discharges into the Olt in Sâmbăta de Jos. Its length is 26 km (16 mi) and its basin size is 75 km2 (29 sq mi).
The Sebeș is a left tributary of the river Olt in Romania. It discharges into the Olt east of Făgăraș. The source of the Sebeș is in the Făgăraș Mountains. Its length is 38 km (24 mi) and its basin size is 94 km2 (36 sq mi).
The Băiaș is a left tributary of the river Olt in Romania. It discharges into the Olt in Copăceni. Its length is 19 km (12 mi) and its basin size is 87 km2 (34 sq mi).
The Lunca is a right tributary of the river Olt in Romania. It discharges into the Olt in Cârța. Its length is 12 km (7.5 mi) and its basin size is 35 km2 (14 sq mi).
The Călinești is a right tributary of the river Olt in Romania. It discharges into the Olt in the village Călinești. Its length is 18 km (11 mi) and its basin size is 43 km2 (17 sq mi).
