Three Gorges Dam
A large amount of animal habitat has also been destroyed. Many animals with critically low populations have lost their vital habitat. These include the endangered Siberian Crane, the Yangtze river dolphin (baiji), and Yangtze sturgeon. About one billion tons of dirty water flow into the Yangtze River each year. The dam has stopped this dirty water from being washed away to Shanghai, and led to serious pollution problems.