Ganga's oxygen level, width decreasing: Study
The level of dissolved oxygen in the River Ganga in Varanasi has dipped in the last two years, revealed a study by the Indian Institute of Technology (BHU), Varanasi. The river's oxygen level currently is 4 mg/litre whereas an oxygen level of 8 mg/litre is considered healthy. Ganga's width has also decreased in the last 25 years, the study revealed. 