Beichuan Qiang Autonomous County 北川羌族自治县

Beichuan Qiang Autonomous County 北川羌族自治县 is a county under the jurisdiction of Mianyang Municipality in Sichuan China. It is a very ethnically diverse and is located in a very mountainous area. Its Chinese name literally means "North" (bei) "River" (chuan). Its new county seat is located at Yongchang Town and was built after 2008 Sichuan earthquake some 12 miles away from the old town.

Beichuan Old Town was hard hit by the devastating earthquake, Beichuan High School's two main buildings collapsed with the loss of more than 1,000 students. Beichuan's Party and government building also collapsed. 80% of the county's buildings are said to have collapsed.

The county town, which prior to the earthquake had a population of 20,000, has been made into a memorial park, as the earthquake site has been deemed too vulnerable. The survivors of the quake have been relocated to Beichuan New Town the former town of Yongchang

The earthquake also caused a landslide on Mount Tangjia which dammed the Jian River and created the Tangjiashan Quake Lake. The lake was in danger of causing the Dam to collapse and potentially flood downstream potentially causing catastrophe to the communities downstream which exceeds over a million people. On June 10, 2008, the lake spilled through an artificially constructed sluice channel and flooded the evacuated town. No casualties were recorded.