In her reply to a question in Lok Sabha, Union Water Resources Minister Uma Bharti said that India has urged China to ensure that the interests of downstreams states are not harmed by any activities in upstream areas.
According to her, the government has ascertained that one power-generating unit of the Zangmu hydroelectric project has been operationalised in November, 2014.
"As these projects are considered to be Run of River (RoR) hydro-electric projects, detailed data in this regard is not available to be able to assess the likely impact," she added.
Government of India, she said, "carefully" monitors all developments on the Brahmaputra river.
"As a lower riparian State with considerable established user rights to the water of the river, India has conveyed its views and concerns to the Chinese authorities, at the highest levels of the Government of the People's Republic of China and has urged China to ensure that the interests of downstreams States are not harmed by any activities in upstream areas," the Minister said.