 It rises at an elevation of about in Gangotri on the southern slope of the Himalayan range.About 70% of the total population of Bangladesh and about 50% of the Indian population live in the Ganges basin; 43% of the total irrigated area in the country is also in the Ganges basin and there are about 100 urban settlements with a total population of about 120 million on its banks.As a result, Bangladesh and India have had many debates about how the Farakka Barrage cuts off Bangladesh's water supply and how to share the water.