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Building with Nature Guideline > Toolbox > Impact Assessment > Biogeomorphological Coastal Modelling System - Delft3D

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Biogeomorphological Coastal Modelling System (Delft3D)

Type: Model

Project Phase: Planning and Design

Purpose: Prediction of biogeomorphological processes in response to interventions

Requirements: Modelling skills for Delft3D, knowledge of natural processes in assessed environment

Relevant Software: Delft3D-Suite (including FLOW, WAVE, WAQ, MOR, PART, etc.)



The biogeomorphological coastal modelling system aims to describe and predict biogeomorphological processes and their response to human interventions in the system of interest. Thus one can identify possibilities to make use of such processes, as well as new opportunities for nature associated with the infrastructure to be developed. Combined with a good understanding of how the system functions a biogeomorphological model enables credible predictions, not just of a single aspect like morphology, safety, ecology or biology, but of the combination including the effects of mutual interactions.

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How to Use

Users are advised to familiarise themselves with:

  • The relevant hydrodynamic, ecological, water quality and morphodynamic processes and their interactions.
  • The modelling of these processes with numerical models such as Delft3D and/or D-Flow FM.

In practice, users of the modelling system will often be familiar with one of the related disciplines, e.g. morphodynamics or ecology. For these users, it may be useful to gain some basic knowledge in the other relevant discipline(s), or to seek collaboration and share relevant knowledge.

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Practical Applications

  1. Lake Veluwe
  2. Schematised tidal basin
  3. Salt marsh restoration in Nisqually estuary, Puget Sound, USA

  4. Impact of salt marshes on tidal channel(s) (formation)

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