In 2012, residents of lahaul valley knocked on the doors of the union environment and forests ministry protesting against the upcoming hydropower projects on the Chenab river basin. They said the projects not only threaten to displace them but will also affect the local ecology. "The Chenab, one of the five major river basins in Himachal, remains the least exploited basin for hydro electricity generation. The government is hell bent on killing the only living river (in the state)," said their letter.