Such sediment loading, the delivery and accumulation of sediments from a different location, as well as changing water levels will continue to influence the demand for dredging to clear access for boaters. Increased storm intensities can increase the amount of stream and river sediment entering the lake, increasing sedimentation volumes in marina and harbor basins. Contaminated dredged material should be transported and disposed of correctly, usually at a confined disposal facility. While there is an expanding industry that can make beneficial use of dredge material, there are still complications and special requirements if dredged material is or suspected to be contaminated. Dredging projects vary greatly - for example, some projects are part of an ongoing program of periodic maintenance necessitated by a natural filling in of sand and silt (sedimentation) some may be required for new harbor development and some may be emergency responses to severe weather events that caused sudden navigation hazards.ĭredging projects involve two operational components: removal of the sediment and disposal of the sediment (dredged material management). Dredging, the excavation and removal of sediments and debris from the bottom of a water body, is necessary to ensure safe passage for ships and to maintain recreational access for boaters.
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