According to the characteristics of the cascade reservoirs in the Qingjiang River Basin and flood control duty,a dynamic control method for limiting floodwater level was developed based on real-time forecasting information and upstream reservoir storage compensation information.By effectively using the flood control storage in the upstream reservoirs and sharing the flood control pressure in downstream reservoirs,this method can make reasonable and timely decisions to enhance the floodwater resources benefit remarkably without lowering the design flood prevention standard.The application results of the Geheyan Reservoir showed that it could decrease the abandoned floodwater by 414.44 million m~3 and generate about 121.72 million kWh hydropower annually.