Flood hazard reduction from automatically applied landscaping measures in RiverScape, a Python package coupled to a two-dimensional flow model

Menno W. Straatsma; Maarten G. Kleinhans

doi:10.1016/j.envsoft.2017.12.010

Flood hazard reduction from automatically applied landscaping measures in RiverScape, a Python package coupled to a two-dimensional flow model

Menno W. Straatsma^*, Maarten G. Kleinhans

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

River managers of alluvial rivers often need to reconcile conflicting objectives, but stakeholder processes are prone to subjectivity, time consuming and therefore limited in scope. Here we present RiverScape, a modeling tool for numerical creation, positioning and implementation of seven common flood hazard reduction measures at any intensity in a 2D hydrodynamic model for a river with embanked floodplains. It evaluates the measures for (1) hydrodynamic effects with the 2D flow model Delft3D Flexible Mesh, and (2) the required landscaping work expressed as the displaced volume of material. The most effective flood hazard reduction in terms of transported material is vegetation roughness smoothing, followed by main embankment raising, groyne lowering, minor embankment lowering, side channel construction, floodplain lowering and relocating the main embankment. Implementation of this tool may speed up decision making considerably. Applications elsewhere could weigh in adverse downstream effects, degradation of the ecology and overly expensive choices.

Original language	English
Pages (from-to)	102-116
Number of pages	15
Journal	Environmental Modelling and Software
Volume	101
DOIs	https://doi.org/10.1016/j.envsoft.2017.12.010
Publication status	Published - 1 Mar 2018

Funding

This research is part of the research programme RiverCare, supported by the domain Applied and Engineering Sciences (AES) , which is part of the Netherlands Organization for Scientific Research (NWO), and which is partly funded by the Ministry of Economic Affairs under grant number P12-14 (Perspective Programme). We are grateful for the thorough and constructive reviews by Bart Makaske and one anonymous reviewer that helped to substantially improve the final manuscript. Johan Kabout (Arcadis) is gratefully acknowledged for commenting on a draft version of the manuscript and sharing his experiences in river management and stakeholder processes. We are grateful to Toine Smits (RU Nijmegen) for his initiative that led to implementation of this research in the RiverCare research programme. The rasterized input data, the landscape realizations, and the hydrodynamic model input and output are available upon request ( [email protected] ). Data are archived at the Faculty of Geosciences, Utrecht University and available in part upon request. Appendix A

Keywords

Disaster risk reduction
Hydrodynamic modeling
Intervention planning
River management
River Waal
RiverScape

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Cite this

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abstract = "River managers of alluvial rivers often need to reconcile conflicting objectives, but stakeholder processes are prone to subjectivity, time consuming and therefore limited in scope. Here we present RiverScape, a modeling tool for numerical creation, positioning and implementation of seven common flood hazard reduction measures at any intensity in a 2D hydrodynamic model for a river with embanked floodplains. It evaluates the measures for (1) hydrodynamic effects with the 2D flow model Delft3D Flexible Mesh, and (2) the required landscaping work expressed as the displaced volume of material. The most effective flood hazard reduction in terms of transported material is vegetation roughness smoothing, followed by main embankment raising, groyne lowering, minor embankment lowering, side channel construction, floodplain lowering and relocating the main embankment. Implementation of this tool may speed up decision making considerably. Applications elsewhere could weigh in adverse downstream effects, degradation of the ecology and overly expensive choices.",

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N2 - River managers of alluvial rivers often need to reconcile conflicting objectives, but stakeholder processes are prone to subjectivity, time consuming and therefore limited in scope. Here we present RiverScape, a modeling tool for numerical creation, positioning and implementation of seven common flood hazard reduction measures at any intensity in a 2D hydrodynamic model for a river with embanked floodplains. It evaluates the measures for (1) hydrodynamic effects with the 2D flow model Delft3D Flexible Mesh, and (2) the required landscaping work expressed as the displaced volume of material. The most effective flood hazard reduction in terms of transported material is vegetation roughness smoothing, followed by main embankment raising, groyne lowering, minor embankment lowering, side channel construction, floodplain lowering and relocating the main embankment. Implementation of this tool may speed up decision making considerably. Applications elsewhere could weigh in adverse downstream effects, degradation of the ecology and overly expensive choices.

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Flood hazard reduction from automatically applied landscaping measures in RiverScape, a Python package coupled to a two-dimensional flow model

Abstract

Funding

Keywords

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