Abstract: To optimize the multi-station calculation method for the river network storage capacity in the Taihu Lake Basin and improve computational efficiency, we conducted calculations based on the current scheme and three designed schemes during significant water rise events such as heavy rainfall and typhoons. The optimal scheme was selected through correlation analysis and relative error analysis. The results show that, for the selected 20 heavy rainfall events, the optimized scheme reduces the required stations from 33 to 15 while maintaining high accuracy. The calculated river network storage capacity exhibits a correlation coefficient of 0.995 with the current scheme and an average relative error of 4.7%, indicating a strong fit. This study holds significant implications for hydrological forecasting and decision-making in the scheduling of backbone projects in the Taihu Lake Basin.