观测表明一定流量的低含沙洪水，就全下游来说可以产生冲刷，但对下段（艾山以下）来说往往发生淤积。
Observed data indicate that the low sediment-laden floods can cause erosion if the lower Yellow River is taken as a whole , but deposition occurs in the lower reach ( Aishan to Lijin ) of the lower Yellow River .
艾山