Hanjiang River to Weihe River Water Diversion Project in Shaanxi Province

The Hanjiang-to-Weihe River Water Diversion Project is the largest and most far-reaching water transfer initiative in the history of Shaanxi Province. It plays a critical role in enabling the optimal allocation of regional water resources and has far-reaching economic, environmental, and social benefits. Spanning both the Yangtze River and Yellow River basins, the project covers a total area of 14,000 square kilometres and diverts 1.5 billion cubic metres of water annually.

This vital infrastructure supports an estimated 1.1 trillion yuan in GDP in the receiving regions, benefits 14.11 million people, and produces 465 million kWh of electricity annually. By returning diverted ecological water to key areas, the project also significantly enhances regional environmental conditions.

The engineering challenges are immense, given the complex geological conditions and ecologically sensitive zones it traverses. Key technical difficulties include ultra-long and deep-buried tunnels, a roller-compacted concrete (RCC) high arch dam, high-head operations, and large-flow pumping stations. In response, over 110 scientific research projects were conducted during the construction phase. These efforts have been recognised with multiple top-tier national and provincial awards, including:

First Prize for National Excellent Engineering Consulting Results

First Prize for Scientific and Technological Progress from the 12th Chinese Society of Rock Mechanics and Engineering

First Prize for Science and Technology Progress of Shaanxi Province

Six additional awards across the fields of rock mechanics, water conservancy, and engineering

Over 80 patents granted for innovations developed through the project

The project was guided by the principle of "sustainability and environmental respect." Clean energy supply was enhanced, carbon emissions reduced, and the design optimised to maximise ecological benefits. In addition, the project demonstrated deep respect for historical and cultural heritage—several construction types reflect local architectural traditions, helping to preserve and promote regional culture.

Environmental protection was prioritised throughout construction, with special attention given to preserving wildlife habitats and mitigating ecological disruption. The project has been recognised with the Provincial Green Construction Award and the Provincial Structural Quality Award.

Strict adherence to transparency and integrity underpinned the project’s management. A robust contract management system was adopted, ensuring mutual accountability and oversight among owners, supervisors, and contractors, and securing the high-quality delivery of this landmark initiative.