《水经注·卷二十八》
春夏水盛时，水就与南面的大江相通，否则，在南面水就到江堤为止，在北面则流经方城以西。
春夏水盛，则南通大江，否则南迄江堤，北径方城西。
When it's the flood season of spring and summer, the water connects to the great river south, or it stops at the river dam in the south, and flows on the west side of Fangcheng in the north.