《水经注·卷十》
《地理志》说：大白渠往东南流，到了下曲阳县注入斯校水；东流分为两条，支流从右边伸出，往东南流，称为百尺沟；又往东南流过和城北面。
《地理志》曰：大白渠东南至下曲阳入斯洨者也。东分为二水，枝津右出焉，东南流，谓之百尺沟，又东南径和城北。
"Geographic Records" says: The large Baiqu flows southeast and merges into the Sijiao River when it reaches Xiquyang County; two sections of the river flow eastward, the branch extends to the right, flows to the southeast, and is named Baichi Gou; it then flows southeast again and passes through the north of Hecheng City.