To clear out silt or deepen a riverbed to allow water to flow freely.

Xun County in Hebi City, Henan Province

To renovate and dredge a waterway such as a river or canal in order to improve flow.

to excavate and clear out a waterway such as a ditch, canal, or channel

to dredge or clear out a body of water by digging

flowing freely and without obstruction, specifically of a waterway

A ship or machine designed for removing mud and sediment from the bottom of a body of water

to dredge; to clean out a waterway by removing mud and debris

dredger; a machine used for clearing the bed of a harbor or river