《水经注·卷十一》
往东南流过广昌县南边，滱水往东流经嘉牙川，有一条水从南边流来注入。这条水发源于恒山北麓，由三条小水流汇合而成，流经嘉牙亭东，然后转向北流，注入滱水。
东南过广昌县南，滱水东径嘉牙川，有一水南来注之，水出恒山北麓，稚川三合，径嘉牙亭东而北流，注于滱水。
Flowing southeast past the south of Guangchang County, the Wan flows east through Jiayachi, where a stream flows in from the south. This stream rises at the northern foot of Hengshan, and is formed by the confluence of three streams, flowing east of Jiayating before turning north and flowing into the Wan.