Dujiangyan
A river scheme on the Min in Sichuan that splits the water instead of damming it. It is still in use and irrigates more than 5,300 km2.
Dated events and their evidence
- 256 BCE disputed
begun around 256 BCE under the Qin; the year is a modern convention, the oldest history gives no date source
Where
31.0093° N, 103.6044° E
At the head of the scheme, at Guankou in Dujiangyan City.
Sources
Each event carries Aion's own evidence grade (mainstream, disputed or speculative). This page repeats what the globe shows for this place.