Lianghekou Hydroelectric Project is situated in Yajiang County of Ganzi Prefecture, Sichuan Province. The project sits where the Yalong merges respectively with the Qingda and Xianshui rivers, hence the name ¡°lianghekou¡± (meaning ¡°estuary of two rivers¡±). Because of its particular location with one dam blocking three rivers, and because of its large reservoir, this project is truly a controlling project in the middle and lower reaches of the Yalong.
The reservoir, with a regulation storage of 6.33 billion cubic meters, has the capacity of multi-year regulation, and will therefore provide good compensation for all its downstream cascade power stations on the Yalong and even on the Jinsha and Yangtze.
The total installed capacity of the project is 3,000MW. The project has favorable development conditions, and will play an important role in improvement of the power source structure of Sichuan power grid, optimization of power source configuration, and fulfillment of the strategy of West-to-East transmission of electric energy. It is a strategic project for hydroelectric development of the Yalong River and even the whole West, and for coordinated socioeconomic development.