Ganges Basin (112,490 km²), West Bengal (71,485 km²), Haryana (34,341 km²), Himachal Pradesh (4,317 km²) , Delhi, Arunachal pradesh(1,484 km²), the whole of Bangladesh, Nepal and Bhutan. Several tributaries rise inside Tibet before flowing south through Nepal. The basin has a population of more than 500 million, making it the most populated river basin in the world. The basin comprises semi-arid valleys in the rain shadow north of the Himalaya, densely forested mountains south of the highest ranges, the scrubby Shiwalik foothills and the fertile Gangetic Plains. Central highlands south of the Gangetic Plain have plateaus, hills and mountains intersected by valleys
Nitrate in the Mississippi River Basin Mississippi River from changing course.This study shows that from 1980 to 2010, the nitrate concentrations remained constant; however, there was a 12% increase in the concentration from 2000 to 2010. The sources of this nitrogen are unknown and the reasons as to why nitrate is increasing in some areas of the Mississippi River Basin while decreasing in others is still a mystery. However, nitrate concentrations were higher during the fall and winter months as opposed to the spring and summer months. This general increasing trend is what leads scientists to believe the dead zone in the Gulf of Mexico at