Evaluation system for influence of the hydroelectric project′s daily regulation on downstream channel

In respect of the principle of comprehensive utilization of water resources,the paper analyzes the influence of non-steady flow due to the hydropower project′s daily regulation on the downstream channel of a dam,on basis of which,and by taking the daily average flow and daily minimum flow discharge from the hydropower project as statistic samples,a qualitative and quantitative evaluation system for analyzing the influence of the hydroelectric project′s daily regulation on the downstream channel of the dam,and a graphic illustration for the influence of non-steady flow are put forward.The system,which is clear on principle,and easy to use,can objectively make an evaluation on hydroelectric projects′ influence on channels,determine the related water levels,and make a sound evaluation on daily regulation′s operation conditions.