Characterized by short concentration times and rapid water level fluctuations

mountainous rivers pose significant challenges that traditional offline forecasting and operation modes can hardly meet for modern precision flood control. As a key technology for realizing the “four forecasts” in basin flood management

the integration of forecasting and reservoir operation is an important means to enhance basin-wide flood control and disaster mitigation capacity. Taking the Shiku River Basin

a first-order tributary of the Hanjiang River in Meizhou City

and Changtan Reservoir

its key control project

as the study area

this paper reviews the operational processes of the typical single-peak flood on June 8

2020 and the persistent multi-peak flood on June 14

2022. It summarizes practical experience in active flood defense

including gaining lead time through hydrological forecasting

conducting advance pre-release to create flood storage capacity

and implementing precise flood retention and peak staggering. In view of current operational limitations

this paper proposes measures such as strengthening cross-departmental data infrastructure

exploring operation decision-making that accounts for forecast errors and uncertainties

and developing a flood operation system integrated with AI technologies. The findings provide practical references for optimizing flood control and disaster mitigation systems and applying integrated forecasting-operation technologies in mountainous basins.