Râul Negru

The Râul Negru (Hungarian: Feketeügy; literally meaning "Black River") is a left tributary of the river Olt in Romania.^[1][2] It joins the Olt in Lunca Câlnicului.^[3] The Râul Negru flows through the villages Lemnia, Lunga, Catalina, Hătuica, Surcea, Telechia, Bita, Reci, Sântionlunca, Ozun, Băcel, Chichiș and Lunca Câlnicului. Its length is 88 km (55 mi) and its basin size is 2,349 km² (907 sq mi).^[2]

Râul Negru
Location
Country	Romania
Counties	Covasna, Brașov
Physical characteristics
Source	Nemira Mountains
Mouth	Olt
• location	Lunca Câlnicului
• coordinates	45.7603°N 25.7567°E / 45.7603; 25.7567
Length	88 km (55 mi)
Basin size	2,349 km2 (907 sq mi)
Basin features
Progression	Olt→ Danube→ Black Sea
Tributaries
• left	Ghelința, Covasna, Tărlung
• right	Cașin

Tributaries

The following rivers are tributaries to the Râul Negru (from source to mouth):^[2]

• Left: Pârâul Mare, Brețcu, Stânca Uriașului, Capolna, Ojdula, Pârâul Racilor, Ghelința, Borviz, Zăbala, Fundul Pârâului, Covasna, Pârâul Beldii, Lisnău, Pârâul Satului, Tărlung
• Right: Lemnia, Estelnic, Cașin, Mărtineni, Mărcușa, Dalnic, Pădureni, Reci, Angheluș