Recently, Sinohydro Bureau 9 Co., Ltd. won the bid for the headworks and water conveyance main canal project of the Xuanwei Reservoir Project in Qiandongnan, Guizhou—a major national water conservancy project—further helping to improve local water supply issues and laying the cornerstone for enhancing the quality of life of local residents.

The Xuanwei Reservoir Project is one of the controlling hub construction projects included in the national 14th Five-Year Plan for Water Security Assurance, and is a major water conservancy project listed in the Opinions of the State Council on Supporting Guizhou in Breaking New Ground in the Large-Scale Development of the Western Region in the New Era. It is a flood control controlling project in the Yuanjiang River Basin and a backbone livelihood project for water supply, located on the main stream of the Qingshui River in the upper reaches of the Yuanjiang River in Majiang County, Qiandongnan Miao and Dong Autonomous Prefecture, Guizhou Province. The project's tasks are primarily flood control and water supply, combined with irrigation and power generation, and it is a Class II large (2) type reservoir with a total construction period of 50 months. The construction content includes two parts: the headworks project and the water supply and irrigation project. The dam hub project has a total storage capacity of 124 million cubic meters and an average annual water supply of 83.36 million cubic meters.

Sinohydro Bureau 9 Co., Ltd. is mainly responsible for the construction tasks of the headworks project and the water conveyance main canal project. Among them, the construction content of the headworks project (including the water supply and irrigation main pipe) includes building works, pipeline installation works, procurement of electromechanical equipment and procurement and installation of fire protection, HVAC, water supply and drainage for management buildings and stations, and water supply and drainage equipment for the power station, as well as temporary works, protective fill works, environmental protection and soil and water conservation works within the corresponding construction scope, with a contract period of 36 months. The construction content of the water conveyance main canal project includes building works, pipeline procurement and installation, valve and expansion joint installation, and procurement and installation of water supply and drainage equipment for pump station gate (valve) stations and management stations for the Xuanwei branch canal and Longshan branch canal, with a contract period of 48 months.

After the Xuanwei Reservoir Project is completed and put into use, it can, in combination with downstream river training and levee construction, comprehensively improve the flood control capacity of the old urban area of Kaili City and the new urban area of Kaili-Majiang, safeguarding the lives and property of downstream residents. It can also effectively solve the production and domestic water supply problems for 832,000 people in the three districts of the "Kaili-Majiang" central urban area and surrounding rural areas, as well as for 64,900 mu of contiguous irrigation districts, playing an important role in promoting the sustainable economic and social development of ethnic minority areas, advancing regional rural revitalization, and improving the ecological environment.