Which is a longest man-made canal of India?

The Indira Gandhi canal is the longest man-made canal of India. The canal measures 649 km in length. 169 km of this canal is in Punjab, and 14 km is in Haryana, and the rest is in Rajasthan. This canal was previously known as the Rajasthan canal. The canal starts from Harike Barrage which is on the banks of the rivers Sutlej and Ravi.