《水经注·卷三十四》
江水又往东经流头滩，这里也是急流奔腾，势极凶猛，连鱼鳖也不能游过，旅人常视为畏途。
江水又东径流头滩，其水并峻激奔暴，鱼鳖所不能游。
The river flows eastward to Liutou Beach, where the current is also turbulent and fierce. Even fish and turtles cannot swim through it, so travellers often regard it as an extremely dangerous place.