Published : Jan 26, 2023 10:45 IST Tapovan Vishnugad, the 520 MW hydropower project undertaken by NTPC, has been controversial at least since 2009, as it is again now in January 2023. In 2009, when the Tapovan Vishnugad Hydropower project’s tunnel boring machine on Dhauliganga river punctured an aquifer near Selang, it led to a daily discharge of millions of …