7 August 2009
The Chinese language website www.scol.com.cn has some images of the area upstream of the landslide dam at Dadu here. This also links to what appears to be a Chinese language bulletin board here in which people are posting images of the situation. If this is as it seems then this area has serious problems. although reports do seem to indicate that the river is not completely blocked.
For example, this is a bridge across the Dadu River under normal conditions:
More details here as well, with some images of the low flow downstream. It appears that the authorities are organising a large-scale evacuation.