dredge - a fishing method that utilizes a bag dragged behind a vessel that scrapes the ocean bottom, usually to catch shellfish. Dredges are often equiped with metal spikes in order to dig up the catch.
Dredgeate: The material excavated from lake, river, or channel bottoms during dredging.
Sludge Digester A tank in which complex organic substances like sewage sludges are biologically dredged. Dredging produces reactions that release energy from the sewage.
Cleaning, deepening, or widening of a waterway, using a machine (dredge) that removes materials by means of a scoop or a suction device.
Drought
Term applied to periods of less than average precipitation over a certain period of time.
Tank in which complex organic substances like sewage sludges are biologically dredged. During these reactions, energy is released and much of the sewage is converted to methane, carbon dioxide, and water.
Slurry ...
hydraulic fill dam A dam constructed of materials, often dredged, that are conveyed and placed by suspension in flowing water.
 See also: Waste, Commercial, Well, Water, Air
  
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