《水经注·卷三十一》
堵水在县境内筑堰造破，破水东西两边都是山冈，两岸相距五六里；截断山冈两边的山舌，积水涨满以后，南北长十余里。破水冲出堤塘向南溃决，下注成为水湾，水湾又分成两部分，西边就是堵水，东边是荣源。
堵水于县，竭以为陂，东西夹冈，水相去五六里，古今断冈两舌，都水潭涨，南北十余里，水决南溃，下注为湾。湾分为二，西为堵水，东为荣源。
Du River was dammed within the county to create a reservoir. The reservoir was between mountain ranges on the east and west; the two banks were five or six li apart. The tongues of mountains on either side of the mountain range were cut off, the water being allowed to build up until it measured over 10 li long from north to south. The reservoir burst through the dike and flowed out to the south, forming a bay, which again divided into two parts, the west part being the Du River, the east Rongyuan.