《水经注·卷五》
这条水冬天澄清，夏天变浊，静止不流。如果夏天洪水泛滥，水的深度达到五丈，方才流通，注入般河。
其水冬清而夏浊，渟而不流，若夏水洪泛，水深五丈，方乃通注。
The water is clear in winter and becomes turbid in summer, and it stops flowing. When flood bursts out in summer, the water depth reaches five zhang, then it begins to flow and joins the Ban River.