Aliyar, Isapur, and Kangsabati are all significant water reservoirs in India, crucial for irrigation, drinking water supply, and hydropower generation. Understanding the role of these reservoirs is essential in the context of sustainable water resource management and agricultural support, as they alleviate the impacts of monsoon variability and promote regional development. The effective utilization and management of such water bodies are essential topics in UPSC Prelims, particularly concerning environmental concerns, development policies, and infrastructure planning in the context of India's socioeconomic landscape.