The correct answer to this question is the Ganges River. The Farakka Dam, which is also known as the Farakka Barrage, was built across the Ganges River and was completed in 1975. The building of this dam has caused issues that have led to major disputes between India and Bangladesh.
The point of the Farakka Dam was to divert water from the Ganges into another river during the dry season. By diverting the water, India has been accused of contributing to a number of problems in Bangladesh, one of which desertification.
The answer given above is quite correct. However some additional clarifications will be useful. First, though in common language barrage is also called a dam. a barrage is a special kind of obstruction created in the course of a river that does not create a big reservoir, usually associated with dams. Barrage are constructed to divert part of the water of a river in another direction. Farakka Barrage was built over one of the many branches of the river Ganges at Farakka in West Bengal to divert its water to another branch of the river, and to clear the silt that had accumulated in its course hampering operations of Calcutta port. It may be noted that as river Ganges approaches its delta, it fans out in many different branches.
The disputes between India and Bangladesh cenrtering round the impact of this barrage on water from the river Ganges available to Bangladesh.