Judgement of the National Green Tribunal (Eastern Zone Bench, Kolkata) in the matter of Tenzing Lepcha & Others Vs Ministry of Environment and Forests & Others dated 15/11/2017 regarding Teesta-IV Hydro-Electric Project on the Teesta river near Chandey Village on left bank and near the Gyathang Village on the right bank in North district of Sikkim. The project envisages construction of a 65m high concrete gravity dam across Teesta river in downstream of confluence of Runchu with Teesta for a generation of 520 MW hydropower.

NGT while refusing to quash the EC laid down certain conditions for the Project Proponent (NHPC) which are:

(a) 3 regime e-flow in consultation with the experts of CIFRI to the MoEF&CC to the satisfaction of the EAC.

(b) Prepare a mitigation plan to prevent reservoir induced seismicity due to Teesta IV Project for consideration and approval by MoEF & CC.