The ancient river that built a civilization and now faces a modern crisis

Countries & Cities · Published 29 September 2026 Swipe more like this →

In short: Flowing through the heart of Sichuan, the 735-kilometer Min River has sustained human life for millennia. From the engineering marvels of the Qin dynasty to the modern rush for hydroelectric power, this vital waterway is currently undergoing a radical transformation that threatens its unique and fragile aquatic biodiversity.

For over two millennia, the Min River has been the lifeblood of the Chengdu plain. Around 2,300 years ago, the hydraulic engineer Li Bing constructed the Dujiangyan Irrigation System, a sophisticated water management scheme that diverted the river's flow to prevent flooding and irrigate farmland. This innovation proved pivotal for the Qin state, fueling a massive population boom and establishing the region as a central hub of Chinese agriculture. Today, this historic site, alongside the nearby Mount Qingcheng, stands as a UNESCO World Heritage site, recognized for its enduring legacy in both engineering and Daoist history.

The river's identity has shifted significantly over time. In the 19th century, some Western observers mistakenly identified the Min as the primary source of the Yangtze, occasionally referring to it as the Blue River—a name derived from the local term Qingshui, meaning clear water. While it was once considered the main course of the upper Yangtze, modern exploration has clarified its role as a major tributary that joins the larger river at Yibin, flowing south between the Qionglai and Min mountain ranges.

Despite its historical significance, the river faces severe ecological pressure. As of March 2014, twenty-seven dams have been completed, planned, or are currently under construction to harness the river for hydroelectric power. This intense industrial development has taken a toll on the local ecosystem. Recent biological surveys indicate a sharp decline in aquatic life; less than half of the forty fish species documented during the 1950s remain in the river today. Some protected species, such as the Sichuan Taimen, have not been spotted in certain stretches, like Wenchuan, for over ten years, highlighting the urgent tension between regional development and environmental preservation.

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