《徐霞客游记·黔游日记七》
又曲曲折折向西行走在岭头上，山岭左右两侧的水流都分别下泻到深谷中，往北流出去的应当汇入软桥下的水流而流入盘江上游，向南流的应当是流经黄草坝后流人盘江下游。
又宛转西行岭头，岭左右水俱分泻深谷，北出者当从软桥水而入盘江上流，南流者当从黄草坝而下盘江下流。
Then we zigzagged and headed west, walking on the ridge, waterflows on both sides of the mountain ridge are both flowing down to the deep valley, the one flowing north should merge into the waterflow under the Soft Bridge and then flow into the upper reaches of the Panjiang River, the one flowing south should flow into the lower reaches of the Panjiang River after passing Huangcao Dam.