The dredged material is used to recover land. Roads, satellite cities and industrial parks are being built along the banks, including garment factories and fertilizer plants. In 2011, the West Bengal government, under hydrologist Kalyan Rudra, commissioned a study on thesta. It presented its findings in the form of a preliminary report to the West Bengal government in December 2012. The detailed report is not publicly available, but Rudra`s scientific writings on teesta are known. In a 2003 article in The Ecologist Asia, Rudra criticized major projects on the river, such as the Teesta Dam Project in Jalpaiguri district and National Hydro Power Corporation hydroelectric projects (Level III and IV) in Darjeeling District, West Bengal. He wrote: “Silation was a big problem, as the projected capacities were decreasing at alarming speeds, often before the whole project was completed! Reservoir evaporation and sewer water infiltration deprived water of the periphery of the command area promised to it during project planning. Dams designed to moderate flooding caused flooding by releasing excess water at the height of the monsoon. The paper supports an idea to reduce the load of Teesta by reducing the number of multi-purpose hydroelectric power plants on it. This would help the river provide enough water for irrigation, he said. At least twice in 2011 and 2017, Bangladesh and India arrived just before the signing of a Teesta agreement. But on both occasions, under Mamata Banerjee, West Bengal opposed at the last minute a strategic agreement on the sharing of water management. In a way, it forced the EU government to withdraw from the almost concluded agreement. In 2017, Banerjee was clearer in her argument, when she effectively vetoed the emerging consensus that teesta had no water to share.
The internal political impasse is due to the reluctance of the Indian Government of the Union to take a proactive approach to the management of intergovernmental river waters, a power conferred on it by the Indian Constitution. Although the EU government`s conditional response to sub-national water disputes has been the institution of courts, the impasse has developed, as demonstrated by the Teesta dispute. Observers have called this “confrontational federalism.” Many glaciers in the Teesta Basin have retreated, says Strategic Foresight Group, a Mumbai-based think tank. “The Teesta River is estimated to have an average annual flow of about 60 billion cubic metres (BCM). A significant portion of this water flows during the rainy season, between June and September. The importance of the river and the seasonal variation of this river are felt during the season (October to April/May), with an average flow of about 500 million cubic metres (MCM) per month. Therefore, during periods of drought, there are floods during the monsoon and drought,” says the 2013 report. Ainun Nishat, the dean of Bangladesh`s river experts, said it was difficult to say whether the project would be successful or not, given that no studies had been carried out on the river.