Water quality of the river Yamuna in the Delhi stretch: Key determinants and management issues

The assessment of water quality of the River Yamuna in the Delhi stretch was carried out by determining changes in the concentration levels of 19 physico-chemical parameters. It was observed that vegetation plays an important role in acting as a biological sink for mineral nutrients, thereby restoring the water quality. It is proposed that restoration of the inundation pattern of floodplains would greatly help in reaeration of the overlying water and re-absorption of pollutants through mud/water exchanges.