《明史·志·卷六十》
五月，天下大雨，黄河在单县黄蝈口决堤，一从徐州出小浮桥，一从旧黄河到达镇口闸。
五月，大雨，河决单县黄堌口，一由徐州出小浮桥，一由旧河达镇口闸。
In May, the whole country suffered heavy rain, the Yellow River burst its banks at Huangguo Mouth in Danxian, a pontoon bridge went out from Xuzhou, and another one arrived at Zhenkou Sluice from the Old Yellow River.