Fig. 4: Map of Ming-Qing Beijing-Hangzhou Grand Canal hydraulic structure locations.
From: Reconstructing Nanwang hub operations on Ming-Qing Grand Canal with HEC-RAS

a Distribution of Water engineering facilities in the Beijing-Hangzhou Grand Canal; b Nanwang Water Diversion Hub Area. Locations of major hydraulic structures such as sluices, dams, and diversion hubs during the Ming-Qing period.