Mechanical Dredging

Unlike hydraulic dredging, which uses suction to remove and a pipe to transfer the sediment, mechanical dredging uses heavy equipment such as an excavator to dig out the bed of the body of water and then remove the sediment. Mechanical dredging equipment is robust and doesn’t filter the dredge material. Although not our preferred method, every method of dredging has specific applications.

In some instances, ponds will be dewatered and/or diverted during mechanical dredging, thus making it the less preferred option. While an expensive and messy endeavor, there are occasions where this is the best or only option. This solution is not dependent on there being water in the pond to dredge like diver assisted suction dredging and hydraulic dredging. When removing large quantities of rock, gravel, densely compacted sand, and rooted littoral zone vegetation (phragmites, cattails, water lilies, water shield), this methodology may be the best choice. Pond deepening beyond the original bathymetry (contour lines) is possible if done correctly through this method. Every dredging method has its place. Pristine Waters has the experience and knowledge to make sure it is done right!