The goal of the study was to find the best way to manage water supply from Danjiangkou Reservoir during water shortages in both the South and North regions. The researchers analyzed the current water supply situation and proposed a method to adjust water levels to meet demand. They found that controlling water levels and adjusting supply can help optimize water distribution and ensure efficient operation of the reservoir. This approach can help in planning how to manage water supply during times of scarcity in different regions.