Our flexible sediment management comprises three important areas of work:
Maintenance: This includes the maintenance and upkeep of waterways and harbour basins through continuous surveys of the waterway bottom, sampling and analysis of sediments, dredging and transport of excess sediment as well as the environmentally friendly relocation of sediments. The excess dredged material is relocated to suitable locations in the watercourse or relocated to land for treatment and disposal.
Remediation: In order to further improve the sediment quality and thus expand the possibilities for resource-conserving handling of dredged material, we are committed to the remediation of pollutant sources on the upper Elbe. At the same time, for almost 30 years we have been relieving the Elbe and North Sea of pollutants that predominantly do not originate in Hamburg by extracting, treating and disposing of contaminated used sediments on land on a large scale.
River engineering: River engineering measures that influence currents, such as the creation of shallow water areas, are suitable for reducing sedimentation in principle. The approximately 30-hectare shallow water area Kreetsand has now been completed. It is a new, natural flooding area that is intended to reduce the accumulation of sediment in Hamburg's harbour area to a certain extent.
Our overall strategy shows how all three areas of work interact and what else is needed to keep the harbour at depth in the long term.