Yamuna in Delhi has narrowed 68%, lost 89% of its flow since 1799: Study
A first-of-its-kind study has used an archival map from 1799 to trace how the Yamuna has changed over more than 200 years, showing that the river flowing through Delhi has become far narrower and carries much less water than it once did. Researchers found that the river has narrowed by about 68 per cent and…