Shipping channels in the middle and lower reaches of the Yangtze River are to be dredged as the water falls to its lowest level in 20 years.
Authorities have withdrawn a large silt dredger from a north China offshore construction site to dredge channels at Heishazhou (Blacksand Shoal), 40 kilometers upstream from Wuhu Bridge on the lower reaches, said Wan Dabin, a senior official with the Yangtze River Waterway Bureau.


