shoaling, silting, estuary, breakwater, excavation, outfall, reclamation, cleanup, dry dock, graving dock, sedimentation, revetment, jetties, marina, waterway, sediment, dam, piers, diking, drainage, wharf, riprap, scheldt, roadwork, headrace, docks, drydock, weir, barge, earthworks, slipway, fishway, fishing, berthing, shoreline, millrace, repaving, wetlands, lighterage, canal, blacktopping, cofferdam, lockage, seagrass, restoration, seining, boatyard, pipelaying, beach erosion, intertidal, bayonne bridge, gillnet, seagirt, oystering, pilings, eelgrass, scalloping, scows, purse seining, bulkheads, bascule bridge, waterfront, navigability, tidal, tributaries, mudflat, harbor, groyne, crabbing, quarry, mariculture, forebay, beautification, drilling, shipyard, headwater, turbidity, desalination, geotechnical, wharfage, resurfacing, grouting, stevedoring, mooring, quay, spartina, basin, aquaculture, sandbanks, causeway, spillway, ebb tide, river, fishery, dewater, mudflats, pilotage, construction, pontoon, demolition, watercourse, sewage, plowing, ploughing, laundering, repairs, blasting, cleaning, felling, pruning, scouring, spraying, purchases, reinvestment, replenishment, watering, weeding, harvesting, building, digging, grinding, woodworking, coating, making, molding, seeding, collecting, conditioning, dressing, ecotourism, mechanised, pearling, saving, surveying, welding, capitalintensive, casting

clamshell, dredger, grapple, placer miner, placer mining