《水经注·卷三十二》
羌水又流经葭芦城南，流经余城南，又往东南流，在左边汇合了五部水。
羌水又径葭芦城南，径余城南，又东南，左会五部水。
The Qiang River continuous flowing past the south of Gialu City and Yucheng city, then it turns to the southeast, meets Wubu Water on the left.