Dredging is the method of eradicating sediment and different materials from the underside of lakes, rivers, and other bodies of water. Dredges can be utilized to take away sand, gravel, rocks, and shells from the bottom of the waterbody. Hydraulic dredging by cutter suction dredgers is used extensively within the Netherlands and Low international locations but just isn't widely adopted in the UK - mechanical dredging.