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Understanding Dredging

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CEDA Working Group on Adaptive Management


A number of publications, among which the CEDA information paper on Adaptive Management (AM), published in 2015, contains a high-level description of the different aspects of AM. The descriptions are often generic and do not include details of AM of specific parameters yet. In this fast-evolving topic, a number of information gaps and subjects that require revision have appeared the past years. For instance, a topic which has undergone a considerable evolution in recent years is ‘pro-active adaptive management of turbidity’.

The CEDA Environment Commission (CEC) has therefore decided to establish a Working Group to prepare a CEDA information paper on Adaptive Management in dredging and land reclamation projects. The paper will provide an overview of key aspects, of all project phases, to aid structured decision-making, while implementing AM. It will collect case studies demonstrating that AM can be applied to guarantee environmental compliance, as well as ensuring the project completion without significant impact on the aquatic environment.


The Working Group is tasked with preparing a CEDA information paper on Adaptive management in relation to potential environmental impacts related to turbidity and other water quality aspects. A questionnaire will be launched to inform the WG on levels of awareness and current practices with respect to AM.

The paper will raise awareness of the benefits of AM, both for employers and contractors, and highlight current best practice. Accompanying dissemination tools will be prepared.

Progress report

The working group aims at gaining insights in the awareness of the application of adaptive management (AM) for sediments and water quality in the industry, including so-called pro-active management. In 2022, a poll was launched to do so, resulting in sufficient response to gather the required information. The results show that an information paper on this topic would benefit the industry by providing details of the advantages of (pro-active) AM. Subsequently, the working group continues efforts to compile a paper containing information on currently available tools and platforms to implement AM. Moreover, a dedicated chapter on pro-active AM focusses on which types of projects benefit from such system and what are the requirements to implement. Further, a number of attention points with respect to legal aspects are discussed as well as relevant case studies. The paper is expected in fall 2023.


Boudewijn Decrop, IMDC, Belgium
Marc Kindermann, Port of Hamburg, Germany
Alessandra Feola, ISPRA, Italy
Sina Saremi, DHI, Denmark
Marc Huygens, DEME, Belgium
Iolanda Lisi, ISPRA, Italy
Marc Brouwer, HaskoningDHV, the Netherlands
Robrecht Schmitz , Sibelco, Germany
Pierre-Yves Belan, CEREMA, Framce
Volker Steege, Federal Ministry of Transport and Digital Infrastructure, Germany
Wouter Schiettecatte , Jan De Nul, Belgium