|Official name||Tianshengqiao-II Hydropower Station|
|Dam and spillways|
|Type of dam||Embankment, concrete face rock-fill|
|Height||58.7 m (193 ft)|
|Length||471 m (1,545 ft)|
|Dam volume||4,800,000 m3 (6,278,163 cu yd)|
|Spillway type||Service, gate controlled|
|Total capacity||26,000,000 m3 (21,079 acre⋅ft)|
|Turbines||6 x 220 MW (300,000 hp) Francis turbines|
|Installed capacity||1,320 MW (1,770,000 hp)|
The Tianshengqiao-II Dam (locally abbreviated as TSQ-II) is a dam and hydroelectric power station on the Nanpan River in the Anlong and Longlin districts in China. Construction of the dam and power plant began in 1982 and was complete in 1997.
A dam is a barrier that stops or restricts the flow of water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect water or for storage of water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC.
The Nanpan River has its source in the Yungui Plateau of eastern Yunnan Province. It then flows east, forming part of the border between Guizhou and Guangxi provinces. It joins with the Beipan River to become the Hongshui River.
The dam's reservoir is fed by the tailwaters of the Tianshengqiao-I Dam 7 km (4 mi) upstream. The dam diverts water east into three 9.53 km (6 mi) long and 9 m (30 ft) diameter headrace tunnels towards the actual power station . At the power station, the water powers six 220 megawatts (300,000 hp) Francis turbines for the production of 1,320 MW (1,770,000 hp) of electricity.
The Tianshengqiao-I Dam is a concrete face rock-fill embankment dam and hydroelectric power station on the Nanpan River straddling the border between Guizhou and Guangxi, People's Republic of China, located in the counties of Anlong and Longlin. The dam is 178 m (584 ft) tall, and was completed in 1998. Water from the dam's reservoir powers four generators with Francis turbines, each with a capacity of 300 MW. Water released from the dam also powers Tianshengqiao-II Dam (TSQ-II) downstream. The power is transmitted to Guangzhou via HVDC Tian-Guang and an AC powerline.
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