《水经注·卷二十六》
得水发源于巨公之山，往西南流。过去在水上筑堰，东西二十里，南北十五里内的田地，都由此堰灌溉。
水出于巨公之山，西南流，旧堨以溉田，东西二十里，南北十五里。
De River originates from the mountain of Jugu, and flows southwest. In the past, a dam was built on the river, irrigating farmlands within twenty li east-to-west, and fifteen li north-to-south.