New Delhi, June 9 -- Union home minister Amit Shah on Monday asked Haryana, Delhi, and Uttar Pradesh to collectively ensure a standard ecological flow in the Yamuna river, which is currently at a low level and affecting the water supply in parts of Delhi. Environmental flow, or e-flow, refers to the minimum flow of water required in a river to sustain its ecological health. Chairing a review meeting on Yamuna revitalisation in Delhi, Shah urged the governments of Delhi, Haryana, and UP, along with concerned ministries, to work towards cleaning the Yamuna not in a fragmented manner, but through an integrated action plan driven by teamwork. Shah also announced that a Memorandum of Understanding would be signed between the MCD and the National...