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
Nutrient cycling in the Columbia River Basin complexity of nutrient cycles is an enduring challenge to understanding ecosystem function. Particularly, in areas of significant habitation and modification by humans, these systems are experiencing rapid periods of alteration from historical precedents within the Columbia river Basin. These shifts in human habitation and impact have further complicated and obscured insights into the behavior of nutrient cycling. As the dominant water system in the Pacific Northwest and the home to nearly five million people, the Columbia River Basin integrates these numerous natural and anthropogenic biogeochemical processes. Consequently, the watershed is a foundational environmental resource, providing the region with many goods