Dujiangyan

The Dujiangyan is an ancient irrigation and flood-control complex built around 256 BC on the Min River to protect and water the Chengdu Plain; its principal credit goes to the Qin hydrologist Li Bing and his team. The system uses divided channels and a strategically cut mountain channel rather than a conventional dam, which lets it manage floods, flush silt and supply irrigation to a very large agricultural area. The site sits where the longmen mountains meet the flat Chengdu Plain in Sichuan, giving it a dramatic river-and-mountain setting rather than a single built-up monument. Today the irrigation works still function, and the area includes temples, viewing terraces and historic bridges that make it both an engineering site and a cultural landscape.

Dujiangyan was inscribed on the World Heritage List in 2000 as part of the combined site Mount Qingcheng and the Dujiangyan Irrigation System. Visitors can inspect the well-preserved headworks - the Fish Mouth Levee, Flying Sand Weir and the Bottle-Neck Channel - and walk paths that follow the river and cross to the artificial island by bridge. The atmosphere mixes working hydraulics, temple courtyards and tourist paths, so expect both active water management infrastructure and areas set up for visitors; some bridges and viewing platforms replace older wooden structures. The site has survived earthquakes and been repaired or rebuilt over the centuries, and occasional conservation work or river-management operations can change access to some stretches, so check locally on the day of your visit.

• Yuzui (Fish Mouth) Levee: The conical, fish-mouth shaped levee divides the Min River into an inner irrigation stream and an outer spill channel and is the clearest demonstration of the system’s design.
• Baopingkou (Bottle-Neck Channel): The narrow, cut-through channel in the rock controls flow velocity and creates the whirlpool effect that helps carry silt out to the outer stream.
• Feishayan (Flying Sand Weir): This wide weir links the inner and outer streams and is where excess water and sediment are drained during high flows.
• Anlan (Couple's) Bridge and island: The bridge spans the river to an artificial island and offers close-up views of the headworks and the river’s flow patterns.
• Erwang (Two Kings) Temple complex: The temple complex beside the river contains halls and a modern statue of Li Bing and provides cultural context to the engineering works.

The nearest major city is Chengdu, which is the regional hub for flights and long-distance trains. From Chengdu the Dujiangyan area is reached by regional train, intercity bus or road - the journey is typically made as a day trip from the city.

Dujiangyan is accessed from the town of Dujiangyan; from there the site is a short taxi or local-bus ride and many visitors use a taxi, local bus or organised tour to reach the main viewing areas and temple terraces - check local schedules and seasonal services for the last stretch.

• Summer brings heavy monsoon rain; expect wet conditions and swollen river flows in June to August.
• Wear comfortable shoes for paved paths, stone steps and short trails around the levees and viewing terraces.
• Respect temple etiquette where indicated and avoid entering restricted technical areas around the operating headworks.
• Combine the visit with nearby attractions in the same World Heritage listing, including Mount Qingcheng, for hiking and temple visits.
• Check local notices on access and conservation work, since river-management or repairs can temporarily close parts of the site.