The Ganges river in India is more than 2,500km long and has the most populated river basin in the world. Hundreds of millions of people and a huge range of wildlife rely on the river Ganges. But ...

2. The Ganges is the longest river in India, stretching over 2,525 kilometres (1,569 miles) from its source in the Himalayas to its delta in the Bay of Bengal ...

Sen also pointed out that the Ganges Valley surrounding the river is being over-tapped for agricultural irrigation, which has sunk water tables and increased levels of arsenic contamination ...