Figure 4 . Ganga Basin Regions as per the biodiversity (Source: Sanghi, 2013)
The Ganga basin, which is split into ten agricultural zones based on meteorological and soil factors is ideal for canal building. It is also helped by an abundant supply of water (Sati, 2021). The basin is one of the most highly irrigated areas on the planet. There are locations with the highest agricultural productivity which play a significant role in meeting the nation’s food needs. While some places are well-known for specific crop production, some crops are also exported out of the nation (Figure 5). Rice, wheat, potatoes, sugarcane, oil seed crops, and lentils are some of the key crops, and they are also water-intensive crops that need extensive irrigation. Though, there has been a discernible change in the river’s hydrology and water quality throughout time.