Over 20,000 people have been evacuated after landslide and mudslide caused major flooding in a city in south China.

The video, filmed in Danba County in Sichuan Province on June 17, shows the mud damming a river, and diverted waters submerging streets and houses.

A landslide dam is a natural damming of a river formed by landslides or volcanic eruptions.

14 trapped people were rescued successfully while two are still missing, reports said.

The video was provided by local media with permission.