Dredging is miscellaneous excavation-type work or operation usually carried out underwater, in shallow sea or fresh water area.A dredge is a device for scraping or sucking the seabed, used for dredging. A dredger is a ship or boat equipped with a dredge.
Dredging and the management of dredged material are an important function of Army Corps of Engineers districts. In order to maintain channels and harbors at safe depths, periodic dredging is required.