Explanation: In Rajasthan, the principal river for water supply is the Chambal River. The Chambal is a significant tributary of the Yamuna River and flows through the states of Rajasthan, Madhya Pradesh, and Uttar Pradesh. It originates in the Vindhya Range in Madhya Pradesh and flows northeastward through the Malwa Plateau before entering Rajasthan.
The Chambal River is crucial for the water supply in Rajasthan due to its substantial flow and the presence of several dams and reservoirs along its course. These water bodies help in irrigation, drinking water supply, and other domestic and industrial uses. The river's importance is further highlighted by its role in supporting the agricultural activities in the region, which is a significant part of Rajasthan's economy.
Other rivers in Rajasthan, such as the Banas and Banganga, also contribute to the water supply but are not as significant as the Chambal. The Banas, for instance, is a tributary of the Chambal and plays a role in the water supply, but it is not the primary source. The Banganga, while historically and religiously important, is a smaller river and does not provide the same level of water resources as the Chambal.
It is important to note that the water supply in Rajasthan is a critical issue due to the arid and semi-arid climate of the region. The Chambal River, therefore, plays a vital role in ensuring water availability for the population and agricultural activities. Understanding the importance of the Chambal River in the context of Rajasthan's water supply is essential for comprehending the geographical and environmental challenges faced by the state.
In summary, the Chambal River is the principal river for water supply in Rajasthan due to its significant flow, the presence of dams and reservoirs, and its crucial role in supporting the state's agricultural and domestic water needs.