《明史·志·卷六十四》
巡抚都御史牟俸说： 山东小清河，往上连接济南趵突各处泉水，往下通到乐安海边高家港盐场。
巡抚都御史牟俸言： 山东小清河，上接济南趵突诸泉，下通乐安沿海高家港盐场。
Mou Feng, the governor and imperial envoy, said: The Xiaoqing River in Shandong connects the spring water in each place of Baotu Springs in Jinan in the upper reaches, and connects to the Gaojiagang Salt Field on the seaside of Le'an in the lower reaches.