《水经注·卷二十八》
夷水发源于庐县边界的康狼山，山与荆山相邻，水往东南流，经过宜城西山，称为夷溪，又往东南流经罗川城，这里从前是罗国。
夷水导源中庐县界康狼山，山与荆山相邻。其水东南流，历宜城西山，谓之夷溪。又东南径罗卅城，故罗国也。
The Yishui River originates from the Kanglang Mountain on the border of Luxian County. The mountain is adjacent to Jingshan Mountain. The water flows from southeast to southeast, passing through Xishan Mountain in Yicheng. It is called Yixi, and flows southeast to Luodian City, which used to be Luoguo.