How do you dredge a lagoon?

The most common method to dredge a lagoon is an auger dredge.  Auger dredges are typically cable driven that are anchored along the shoreline.  The auger is usually 6 to 8 feet wide and turns to move sludge toward the center where the suction intake from the pump is located.  Sludge is pumped via a pipeline to be dewatered in drying beds, belt presses, settling ponds, geosynthetic tubes, filter presses, or other dewatering means.  The auger can be set to a specific depth or guided with wheels or guides to prevent damage to liners within lagoons.