India has expressed concerns over China's plan to build a mega dam on the Brahmaputra River in Tibet, stating that it will continue to monitor and take necessary measures to protect its interests. New Delhi has urged Beijing to ensure that the interests of downstream states are not harmed by activities in upstream areas. The dam, estimated to cost USD 137 billion, has raised apprehensions about its impact on the ecological balance of Arunachal Pradesh and Assam, through which the Brahmaputra flows. India has repeatedly expressed its concerns to China through diplomatic channels, highlighting the need for transparency and consultation with downstream countries.