General. Underwater excavation activity or operation with the purpose of gathering up bottom sediments and disposing them at a different location. Sediment that has been dredged from the waterway is called dredged material
US Department of Commerce, National Oceanic and Atmospheric Administration, Glossary - NOAA's State of the Coast (SOTC), Washington, DC, USA 2013. http://stateofthecoast.noaa.gov/glossary.html, (CoaStormEmr - Amer) {881}