<Tr> <Th> Secondary source </Th> <Td> Gar Tsangpo </Td> </Tr> <Tr> <Th> Source confluence </Th> <Td> </Td> </Tr> <Tr> <Td> - location </Td> <Td> Shiquanhe, Ngari Prefecture, Tibet and India </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 4,255 m (13,960 ft) </Td> </Tr>

Which river in punjab is known as backbone of punjab