The waters released in Bangladesh to Bangladesh near Farakka, in accordance with Article I, should not be reduced below Farakka, except for the appropriate use of water, up to 200 Cusecs, from India between Farakka and the point located in the Ganga/Ganges where the two banks are located in Bangladesh. The Ganges, which flows from the plains of northern India, forms a 129-kilometre border between India and Bangladesh and 113 kilometres in Bangladesh. At Pakaur, India, the river began to wear with the branch of its first trade, the Bhagirathi River, which formed the Hooghly River. About 10 kilometres from the Bangladeshi border, the Farakka Dam, built in 1974, controls the Ganges River and diverts some of the water to an access channel connecting the Hooghly to keep it relatively mud-free.  We critically examined the performance of the 1996 Ganges water-sharing contract in the post-contract period (1997-2016) and found the main weaknesses in the apparently remarkable features of the treaty. One of the most important restrictions of the treaty was the unjustified acceptance of the future availability of water in Farakka on the basis of the average flows of 40 years. It underestimated the impact of climate variability, the frequency of flow events and the increase in upstream water flow, which particularly increased the expected future flows in the treaty, particularly in the most critical phases. In addition, future climate change and increased demand for upstream water are likely to lead to more frequent years of very low rivers in Farakka. This is why we recommend projecting future water availability in Farakka through hydrological models; Such modelled flows would create the reliable capacity of Farakka`s flows to meet future water needs and form the basis for a future formula for water distribution between riparian countries. Teesta is the fourth largest river among the 54 rivers shared by India and Bangladesh. The total area of the Teesta Basin is 12,159 km2, about three times the size of the 2,004 sq km Indian state of Goa. Inside India, there are 6930 km2, or 86% of the Sikkim Basin. The river is very variable.
In the Dalia Dam in Bangladesh, the average maximum flow of Teesta was recorded up to 7,900 m3/s, while the minimum average flow was only 283 m3/s. Continued river isolation and control reduced the river to 28 or even 14 m3/s, especially during periods of drought. The average annual flow of Teesta is about 60 BCM. Teesta`s seasonal rate of variation is about 1:10, or 90% of its water, about 54 BCM, flows during the rainy season from June to September. This means that the river through the rest of the year is only 6 BCM. It is this phenomenon – the reduction of the Teesta River during the leaner season – that is the bone of contention between India and Bangladesh. A five-year agreement was the first major water allocation agreement for the Ganges, signed in November 1977, shortly after India unilaterally took water withdrawals from June 1975 to November 1977 (Hossain 1998).