🇨🇳 China · Hydraulic works
Karez of Turpan
Han dynasty 142 BCE to Qing · Han, Uyghur, Hui oasis communities
2000-year karez underground qanat network (5,000 km, 1,100 lines) feeding Turpan Depression vineyards from Tian Shan snowmelt.
🇨🇳 China · Hydraulic works
Dujiangyan East Secondary Canal (Yuzui East Feeder Canal, Sichuan)
Qin 256 BCE to Han 100 BCE to Qing 1884 (Dujiangyan east feeder) · Qin–Han Shu (Sichuan) state hydraulic
East feeder canal 5.2 km ×12×2.2 m stone revet 1.2 m with bottleneck sluice 8 m: Qin 256 BCE/Han 100 BCE eastern Chengdu 820 ha.