《水经注·卷八》
又往东北流过卢县北面。济水往东北与循沟汇合。循沟上流承接循湖，北流注入济水。
又东北过卢县北，济水东北与湄沟合，水上承湄湖，北流注济。
It also flows northeast past the north of Luxian. Ji River merges with Xun Ravine towards northeast. The upper stream of Xun Ravine connects with Xun Lake and flows north into Ji River.