《水经注·卷二十八》
洲东岸西有个徊湖，积水面积数十亩，长数里，宽不到百步，水色常绿。
洲东岸西有洄湖，停水数十亩，长数里，广减百步，水色常绿。
On the east bank of the island in the west is the Huai Lake, covering an area of dozens of acres, several miles long and less than a hundred steps wide, and the water is always green.