Evaluation of Future Water Supply Capacity Based on Multipurpose Dam Operation Methods in Seomjin River Watershed

This study assessed the water-supply capacity of the Seomjin River Basin, focusing on dam operation methods and supply priorities. Water scarcity characteristics were analyzed using reliability, resilience, and vulnerability metrics, and probability distribution functions were applied to gain a comprehensive understanding of water shortage patterns. Comparing firm and deficit supply operation methods, firm supply was found to ensure consistent water distribution across regions, but showed limited resilience during droughts. In contrast, a supply deficit increased flexibility in water delivery, enhancing reliability and resilience in certain areas despite leading to imbalances across regions depending on the capacity of the hydraulic structures. This study suggests that a hybrid approach can effectively address these disparities, emphasizing the importance of adaptive region-specific strategies in future water resource policymaking.