<Table> <Tr> <Td_colspan="2"> Indira Gandhi canal </Td> </Tr> <Tr> <Td_colspan="2"> Canal </Td> </Tr> <Tr> <Th> Country </Th> <Td> India </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Source </Th> <Td> Harike barrage </Td> </Tr> <Tr> <Td> - location </Td> <Td> Punjab and Rajasthan </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Discharge </Th> <Td> </Td> </Tr> <Tr> <Td> - average </Td> <Td> 138 m / s (4,873 cu ft / s) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Indira Gandhi canal </Td> </Tr> <Tr> <Td_colspan="2"> Canal </Td> </Tr> <Tr> <Th> Country </Th> <Td> India </Td> </Tr>

Which is the longest irrigation canal in india