What is black water?

Heishui County in Sichuan Province is named after Heishui River in China. The Amdo dialect in Tibetan is called Heishui Cuoqu, which means "Cuoqu" pig iron and "Qushui", and is extended to Heishui. Because this river runs through the whole territory, it is called black. 1952 On July 24th, Blackwater was liberated, and the Blackwater Administrative Committee (county level) was established in September of the same year. Luhua County was established in1953+February, and was renamed Heishui County in 1954.