excavation, scraping, digging, draglining, suction dredging to remove sand, silt, rock or other underwater sea bottom material
Digging up the sea floor for such purposes as extending beaches or making harbors deeper
The removal of materials including, but not limited to, rocks, bottom sediments, debris, sand, refuse, and plant or animal matter in any excavating, cleaning, deepening, widening or lengthening, either permanently or temporarily, of any tidelands, rivers, streams, ponds or other waters of the Commonwealth, as defined in 310 CMR 9: 04
Removing material (usually sediments) from wetlands or waterways, usually to make them deeper and wider
Type of surface mining where chain buckets and draglines are used to extract sand, gravel, and other surface deposits covered with water This technique is also used to remove sediment from streams and harbors to maintain shipping channels
The removal of mud from the bottom of water bodies using a scooping machine This disturbs the ecosystem and causes silting that can kill aquatic life
A process for mining streambed sands, gravel and placer deposits through the use of chain buckets and drag lines
(SMP) Excavation or displacement of the bottom or SHORELINE of a water body Dredging can be accomplished with mechanical or hydraulic machines Most is done to maintain channel DEPTHS or berths for navigational purposes; other dredging is for shellfish harvesting or for cleanup of polluted sediments
To dig, gather or remove a layer of sediment by dragging with a tool called a dredge
Deepening rivers or coastal waters by removing material from the bottom of the water body