National Green Tribunal has sought responses from Centre and others on a plea seeking directions to maintain a minimum environment flow in Ganga to maintain wildlife and river ecology. <br/><br/>A bench headed by acting Chairperson Justice U D Salvi today issued notices to the ministries of Environment and Forest, Ministry of Water Resources, Central Pollution Control Board, National Mission for Clean Ganga, Uttarakhand Jal Vidyut Nigam Ltd and others while seeking their replies before 8th of March.<br/><br/>The plea alleged that a substantial flow of the Ganga was being diverted in Dehradun to a side canal for a power plant.<br/><br/>The tribunal had earlier directed all states to maintain a minimum environmental flow of 15 to 20 per cent of the average lean season course in their rivers.