<Tr> <Td> - coordinates </Td> <Td> 49 ° 45 ′ 0" N 86 ° 34 ′ 0" E ﻿ / ﻿ 49.75000 ° N 86.56667 ° E ﻿ / 49.75000; 86.56667 </Td> </Tr> <Tr> <Th> Secondary source </Th> <Td> Biya River </Td> </Tr> <Tr> <Td> - location </Td> <Td> Lake Teletskoye, Altai Republic </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 434 m (1,424 ft) </Td> </Tr>

Where does the ob river begin and end