Projects

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H1) Optimizing river management

Start: 08/2014
End: 12/2019
Status: Active

Contact details

Menno Straatsma

Utrecht University

Gameren, an area next to the Waal river where a side channel was built to reduce water levels and improve biodiversity (Source: RWS).

Project output

Prototype toolbox to estimate and get a quick overview of the multiple benefits and related costs of flood reduction interventions.

 

Challenge

Typical river interventions such the ones implemented in the Netherlands but also abroad should limit the costs while satisfying requirements for flood safety and biodiversity. However, the estimation of intervention effects to the river system can be complex and time consuming. Managers increasingly need to base their decisions on available monitoring information and relatively quick but comprehensive overviews to optimize efforts. However, the estimation of intervention effects to the river system can be complex and time consuming. Managers increasingly need to base their decisions on available monitoring information and relatively quick but comprehensive overviews to optimize efforts.

Key goals: Collaborative Governance Integrated management

Gameren, an area next to the Waal river where a side channel was built to reduce water levels and improve biodiversity (Source: RWS).

Innovative compoments

We propose RiverScape, a prototype modelling toolbox that allows to quickly position and estimate costs of seven types of river interventions. These are (see image on the right): (1) Side channel constructionl (2) Floodplain lowering; (3) Vegetation removal; (4) Embankment or dike relocation; (5) Groyne lowering or removal; (6) Lowering or removal of minor embankments; and (7) Raising of main embankments. RiverScape is built upon existing modules (2D flood model, BIOSAFE and Delft3D). Policy advisors can compare the interventions according to flood reduction,  biodiversity indicators and a rough cost estimation. The latter is calculated based on the amount of removed material with the interventions. For the Dutch locations, the biodiversity module automatically extracts the landscape changes on the different ecological catefories from the official maps.

For whom and where?

  • Regions around the world that are interested on the Room for the River interventions and the potential application of RiverScape;
  • Dutch locations that need to estimate biodiversity effects and ecosystem services for planning or maintenance.

Data-collection methods: Historical approach Numerical modeling Process-based modeling

Temporal scale: 1-10years Scenario

Application and findings

 

Status for day-to-day practice

With the combined analysis of modelling outputs river managers can get first indication that can be generalized to other cases. Yet mechanisms such as bank erosion and vegetation growth and the effect of maintenance efforts should be better represented.

We applied the prototype tool at a larger scale (for the three main Rhine tributaries) and for two river sections (in Waalwelde area nearby the Gelderse Poort and in Sint Andries location).

Key locations: IJssel River (NL) Nederrijn-Lek River (NL) Waal River (NL)

Spatial scale: Delta scale River section

Next steps

Last modified: 18/02/2019

Explore the contact details to get to know more about the researchers, the supervisory team and the organizations that contribute to this project.

Main researcher

Menno Straatsma

Utrecht University

Suvervisory team

prof. dr. Maarten Kleinhans

Utrecht University

prof. dr. Hans Midelkoop

Utrecht University

Contributing partners

As soon as available, explore the storyline to get to know more about the main methods or prototype tools that were developed within this project.

Biodiversity recovery and flood risk adaptation at delta scale

We calculated biodiversity scores to show the recovery from 15 years flood risk adaptation that consider nature requirements.

Menno Straatsma

Utrecht University

View storyline

Explore the output details for available publications to get a glance of the innovative components and implications to practice as well as the links to supporting datasets.

Project outputs

Low-hanging fruits in large-scale fluvial landscaping measures

We show that the multidimensional evaluation of river interventions in the Waal river opens up opportunities to discuss possible trade-offs.

19/09/2018 by Menno Straatsma et al.

View details View publication

Contains: Publication open access

Flood hazard reduction from automatically applied landscaping measures in RiverScape

Seven flood reduction measures along the Waal river were ranked according to the water level reduction and the displaced material for their implementation.

01/03/2018 by Menno Straatsma et al.

View details View publication

Contains: Model or tool upon request

Biodiversity recovery following delta-wide measures for flood risk reduction

We show the biodiversity recovery from 15 years flood risk adaptation that consider nature requirements building a spatial extension to calculate biodiversity scores.

08/11/2017 by Menno Straatsma et al.

View details View publication

Contains: Dataset upon request Publication open access Storyline for practice

Take a look to the dissemination efforts and application experiences which are available in the news items and blogs.

News

Biodiversity in the Rhine Delta featured on national news and TV

09/11/2017 by Menno Straatsma

After decades of decline, the biodiversity increases again in the Rhine delta, the rivers and floodplains along the large tributaries in The Netherlands.

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All news

Videos

RiverCare meeting room

01/11/2016

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Rivercare floodplain

01/11/2017

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