Yuan-dynasty Grand Canal Administration

Timeline

1. 1261–1270Shandong canal section · ShandongAround the time of Kublai Khan's unification of the north, he dispatched envoys to survey the Yellow River–canal connection sections, conducting hydrological and channel measurements in advance for later north-south grain transport.
2. 1283–1293Tongzhou · BeijingGuo Shoujing oversaw projects including the opening of the Tonghui Canal, established the Waterworks Directorate to govern waterways, and built twenty-four locks to regulate water levels, achieving reliable grain transport between Dadu and Tongzhou.
3. 1280–1350Liujia Port · JiangsuIn the early Yuan, grain was shipped north by sea from Liujia Port, then entered Dadu via Tongzhou; river and sea transport were centrally coordinated, forming a dual-track grain transport pattern.