New Delhi, March 21 -- For a generation of young people who have grown up in Delhi, the Yamuna has been a river only in name. What was once the lifeline of Delhi now drags through the city as a toxic stream - its banks lined with industrial and domestic waste, its surface foaming with chemical froth. Successive governments, run by different parties, have all pitched grand schemes to revive the river; courts have issued rebukes; and thousands of crores have been poured into clean-up projects. Yet, the river remains on life support.

Today, Delhi stands at a moment that could change the river's fate - for better or for worse.

Rejuvenation of the river is back in the spotlight following the recent Delhi assembly elections. Its winner, the Bha...