The Ganga river water is shared at Farakka with Bangladesh. Farakka Barrage is located in the Indian state of West Bengal, near the border with Bangladesh. The purpose of the barrage is to divert 1,100 cubic metres per second of water from the Ganga to the Hooghly River for flushing out the sediment deposition from the Kolkata harbour without the need of regular mechanical dredging.

Option 1, Nepal, and Option 2, Bhutan, are not correct because they are upstream countries and the Ganga does not flow through them. Farakka Barrage is specifically designed to allow water to flow to downstream countries, in this case being Bangladesh.

Option 4, Myanmar, is also not included because the Ganga does not flow through Myanmar, it primarily flows through India and Bangladesh.