《元史·列传·卷五十一》
其五，怀、孟之间沁河，浇灌左右两岸田地，犹有余水，使之东与丹河余水相合，再引向东流至武陟县北，合入御河，可灌田二千余顷。
其五，怀、孟沁河，虽浇灌，犹有漏堰余水，东与丹河余水相合。引东流，至武陟县北，合入御河，可灌田二千余顷。
Fifthly, in between Huai and Meng, the Qin River irrigates fields on both sides and still has water left over. This is used to meet the overflow from the Dan River and then diverted eastwards to the north of Wuzhi County to connect with Yuhe, which can irrigate over 2,000 hectares of land.