Yuliang Dam, Historical water management structure in Yuliang, China.

Yuliang Dam crosses the Lian River, a tributary of the Xin'an River, 1 km south of Shexian in Anhui. About 140 m long, it is 27 m wide at the base and 4 m at the top, built of blue-grey stone blocks weighing over a ton each, with stone locks joining the courses and a drainage gate in the middle.

Yuliang Dam was first built in the Tang dynasty and rebuilt in 1605, the 33rd year of the Wanli era of the Ming dynasty. It was listed in 2001 among the fifth batch of Major Historical and Cultural Sites Protected at the National Level. In the Ming and Qing periods it was the main departure dock for Huizhou merchants heading to Zhejiang and Jiangsu.

Yuliang Street at the dam's northern end is paved with fish-scale cobblestones, lined with Huizhou-style houses; its western alleys once led to riverside docks, each assigned a different trade. The dam was the main departure quay for Ming and Qing Huizhou merchants heading to Zhejiang and Jiangsu.

The dam is reachable by main roads leading to She County, and offers visitors several paths to explore the site. It is wise to wear sturdy shoes and allow enough time to walk around and take in all the details of the structure.

Each layer of blue-grey stone blocks, some weighing over a ton, is pinned to the next with inserted stone locks, so the dam works as one rigid mass. The blocks are laid in staggered courses rather than a flat wall, a detail visible along the crest.