<Tr> <Th> Length </Th> <Td> 215 kilometres (134 mi) </Td> </Tr> <P> Bhavani is a major river in Kongu Nadu region of Tamil Nadu, India . It is the second longest river in Tamil Nadu and a major tributary of the Kaveri River . </P> <P> Bhavani river originates from Nilgiri hills of the Western Ghats, enters the Silent Valley National Park in Kerala and flows back towards Tamil Nadu . The Bhavani is a 217 - kilometre (135 mi) long perennial river fed mostly by the southwest monsoon and supplemented by the northeast monsoon . Its watershed drains an area of 0.62 million hectares (2,400 sq mi) spread over Tamil Nadu (87%), Kerala (9%) and Karnataka (4%). The main river courses majorly through Coimbatore district and Erode district in Tamil Nadu . About 90 per cent of the river's water is used for agriculture irrigation . </P> <P> Twelve major rivulets including West and East Varagar rivers join Bhavani draining the southern Nilgiri slopes . At Mukkali, Bhavani takes an abrupt 120 - degree turn towards the northeast and flows for another 25 kilometres (16 mi) through Attappady plateau . It gets reinforced by the Kunda river coming from the north . Siruvani river, a perennial stream and the Kodungarapallam river, flowing from the south and southeast respectively join the Bhavani at Kerala - Tamil Nadu border . The river then flows east along the base of Nilgiris and enters the plains near Bathra Kaliamman temple at Mettupalayam after joining with Coonoor river coming from northwest . </P>

The river bhavani is originated and flows from which plateau of kerala
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