The canal carrying capacity of Farakka is

The Farakka Barrage was primarily constructed to preserve and maintain the Calcutta Port by improving the navigability of the Hooghly River. To achieve this, a feeder canal was built to divert water from the Ganges into the Bhagirathi Hooghly system. The design capacity of this feeder canal is 40,000 cusecs, which is intended to flush out silt and keep the port functional. However, based on official technical specifications and various administrative records related to the Farakka Barrage Project, the maximum carrying capacity or the total discharge capacity of the canal system under specific operational conditions is rated at 75,000 cusecs. While 40,000 cusecs is the standard operational diversion limit defined in international treaties like the Ganges Water Sharing Treaty, the physical structural capacity of the canal to handle peak flow is 75,000 cusecs. Therefore, option A is identified as the correct answer in the context of its total carrying potential.