《水经注·卷四》
南岸离城十五里，还有文母庙，庙前有碑。这条水就是都水，都阳县就是以水取名的。
水南犹有文母庙，庙前有碑，去城十五里。水，即水也，县取名焉。
Fifteen miles south of the river is the Tomb of the Magistrate of Literature, with a tablet in front of it. The water is River Du, and Duyang County is named after this river.