Jian River ( ) is a river in China , the headwater stream of Tongkou River ( 通口河 ) . The Tongkou joins the Fu River which is a tributary of the Yangtze . The Jian River flows through Beichuan Qiang Autonomous County , Sichuan . The 2008 Sichuan earthquake caused a landslide dam on the river which created Tangjiashan Lake . More than 100,000 people were evacuated downstream while a sluice was constructed . The river is now a blood red or crimson color due to pollution
2008 Sichuan earthquake
2008 Sichuan earthquake
Jian River (Sichuan)