Baihetan Dam plant in the world, after the Three Gorges Dam. When finished, it will be the third largest dam in China and the fourth in the world, in terms of dam volume. Construction on the dam began in 2008 and is expected to be complete in 2021. Baihetan Dam The Baihetan Dam () is a large hydroelectric dam under construction on the Jinsha River, a tributary of the Yangtze River in Sichuan and Yunnan provinces, in the southwest of China. The dam is a 277 m tall double-curvature arch dam with a crest elevation of 827 m. Its width will be
Three Gorges Dam the land in the area is experiencing erosion, depositing about 40 million tons of sediment into the Yangtze annually. Because the flow is slower above the dam, much of this sediment will now settle there instead of flowing downstream, and there will be less sediment downstream. The absence of silt downstream has three effects: Erosion in the reservoir, induced by rising water, causes frequent major landslides that have led to noticeable disturbance in the reservoir surface, including two incidents in May 2009 when somewhere between of material plunged into the flooded Wuxia Gorge of the Wu River. Also, in the