Patna: The water resources department (WRD) has started work on the revival and expansion of the Uderasthan irrigation project, which is expected to provide irrigation to 6,410 hectares across Jehanabad, Gaya and Nalanda districts within 18 months.The project, part of the govt’s Saat Nishchay-3 programme, has received state cabinet approval for an expenditure of over Rs 53 crore. Farmers in Hulasganj, Khijarsarai, Islampur, Ben and Parwalpur blocks will benefit.The work includes extending the Mahmuda main canal by 2km, restoring its branch canal and building infrastructure along the Bharthu branch canal. Silt will also be removed from a 16.80 km stretch of the Jalwar river to improve its water-carrying capacity. The 1,200-metre approach road to the Uderasthan barrage will also be upgraded.Silt accumulation in the Jalwar has reduced its capacity, affecting irrigation under the Nishchalganj project. The canal expansion will help link the Falgu river’s water with the Jalwar, strengthening irrigation potential in the region.