Nearly 5000 dams were built worldwide only in the periods between 1970 to 1975 (WCD: 2000; Nayak: 2010)
  The International Commission on Large Dams (ICOLD) defines ‘large dams’ as those with a height higher than 15m or dams with a shorter height but a reservoir volume of more than 3 million m. 
  http://sandrp.wordpress.com/2013/02/07/the-exper-approval-committee-has-zero-rejection-in-six-years/
  The EIA notification issued under the EPA clearly says that: “No construction, preliminary or otherwise, relating to the setting up of the project may be undertaken till the environmental and site clearance is obtained.” -- Vaholikar and Ahmed: 2003: 28.
  The term run-of-the-river (RoR) project is often misleading. It is used in variety of projects. However, a hydropower projects is RoR, “only if the inflow is equal to outflow in real time basis, that is, when there is no storage or modification at all”. Whereas, the big hydro projects in the eastern Himalayas, when they are referred to as ‘run-of-the-river’, “involve large dams which divert the river waters through long tunnels, before the water is dropped back into the river at a downstream location after passing through a powerhouse. These projects are promoted as being ‘environmentally benign’ as they involve smaller submergences and lesser regulation of water as compared to conventional storage dams”-- Baruah: 2012; Vagholikar and Das: 2010:4.
  From the Lower Subansiri Hydro Electric Project National Green Tribunal Judgement. Dated 16 October 2017 page 7. 
  Roy: 1999 http://www.theguardian.com/books/1999/jun/05/arundhatiroy